果树

• Exogenous NO₃^- Enhanced Sugar Contents and Sucrose Correlated Enzymes Activity in Roots of Sweet Cherry under Water-logging Condition
• HAO Yun-hong;HU Yan-li;SHEN Xiang;MAO Zhi-quan;WANG Yuan-zheng;SU Li-tao;and YANG Shu-quan
• Acta Horticulturae Sinica. 2009, 36(7): 937-944.
• Abstract ( 1924 ) HTML ( 1505 ) PDF (936KB) ( 1505 ) 　　　

• Effects of exogenous NO₃^-on sucrose, glucose, fructose and starch contents as well as sucrose synthase(SS) disassemble activity, sucrose synthase synthesis activity, neutral invertase activity（NI）and acid invertase activity（AI）in roots of sweet cherry ( Prunus. avium. 'Daihong') with P.pseudocerasus var Daqingye as rootstock under water-logging condition were studied. The results showed that under water-logging condition, sucrose, glucose, fructose and starch in roots of sweet cherry increased significantly in the early period and then decreased in the later period in both treatment and control. Exogenous NO₃^-enhanced the contents of sucrose, glucose, fructose and starch, which were higher than control, while to the maximum, which were 18.02%, 21.97%, 25.27% and 11.41% higher than that of control respectively when reached to the maximum. The sucrose synthase disassemble activity in roots of sweet cherry increased to the highest level and then declined gradually in both treatment and control. Meanwhile, the sucrose synthase synthesis, NI and AI activities decreased gradually, but four enzymes activities of treatment were higher than that of control after using exogenous NO₃^-. We conclude that the addition of NO₃^- can enhance the tolerance of the roots of sweet cherry to hypoxia through regulation of sugar metabolism.

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• Studies on the Photosynthetic Characteristics of ‘Hanfu’ Apple in Cool Climate Regions
• Zhao De-ying;Lü De-guo;Liu Guo-cheng;;Qin Si-jun;Ma Huai-yu;_;and Cheng Wen-bo
• Acta Horticulturae Sinica. 2009, 36(7): 945-952.
• Abstract ( 2330 ) HTML ( 1611 ) PDF (901KB) ( 1611 ) 　　　
• With 'Hanfu' apple and its parents 'Dongguang' and 'Fuji' apples as the materials, the effects of weather conditions, seasonal factors and leaf position on the photosynthetic characteristics were studied by using CIRAS-1 Portable Photosynthesis System. The results showed that diurnal change of net photosynthetic rate (P_n) of leaves in 'Hanfu' apple and its parents was a typical bimodal curver in a sunny day, with two peaks (13.47μmol·m^-2·s^-1，12.46 μmol·m^-2·s^-1，11.21 μmol·m^-2·s^-1and 11.92 μmol·m^-2·s^-1, 10.94μmol·m^-2·s^-1, 9.84 μmol·m^-2·s^-1respectively) appeared at 10:00 and 14:00, respectively. And obvious "noon rest" phenomenon of Pn happened in daytime. As far as that was in a cloudy day, the curve changed into unimodal, with the peak (11.0 μmol·m^-2·s^-1, 10.2 μmol·m^-2·s^-1 and 10.3 μmol·m^-2·s^-1) appeared at around 12:00, and the diurnal mean Pn was 2.28 μmol·m^-2·s^-1, 2.86 μmol·m^-2·s^-1 and 2.86 μmol·m^-2·s^-1 below a sunny day. The seasonal variation of P_n of leaves in 'Hanfu' apple and its parents was found as an unsymmetrical double-peak curve, with two peaks appeared in the early July and September, respectively. The variation of P_nin leaves at differrent nodes on new shoots was a parabola type curve, and those at the upper and middle nodes were higher than that of lower nodes. The light compensation point (LCP) of leaves in 'Hanfu' apple and its parents were 5.9±1.8 μmolm^-2·s^-1, 21.1±1.4 μmol·m^-2·s^-1and 9.05±2.1 μmol·m^-2·s^-1, and the saturation point (LSP) were 1665±20 μmol·m^-2·s^-1, 1418±131 μmol·m^-2·s^-1 and 1300±56.6 μmol·m^-2·s^-1, respectively. The the CO2 compensation point(CCP) were 87.5±1.4 μmol·mol^-1, 84.2±5.9 μmol·mol^-1and 59.5±7.5 μmol·mol^-1 , and the saturation point(SC) were 2961±41 μmol·mol^-1, 1572±166 μmol·mol^-1 and 1381±23 μmol·mol^-1 respectively. The photosynthetic capacity of 'Hanfu' apple was stronger than that of its parents in both high and low light conditions to indicate that 'Hanfu' apple was a photophil and shade-tolerant plants.
  
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• Effect of Auxin and Cytokinin on PAs content and NO generation of Malus hupehensis Rehd. in Vitro
• ZHANG Long;YANG Hong-qiang;LI Qiang;SUN Xiao-li;Qiao Hai-tao
• Acta Horticulturae Sinica. 2009, 36(7): 953-958.
• Abstract ( 2370 ) HTML ( 1623 ) PDF (604KB) ( 1623 ) 　　　

• The effects of NAA, IBA, ZT and 6-BA on the growth and the changes on endogenous levels of PAs and nitric oxide were investigated by using regeneration system of Malus hupehensis Rehd. in vitro. As a result, the increase rate of fresh weight and the contents of protein, polyamines (PAs) and nitric oxide (NO) increased significantly in MS medium supplemented with 0.02-1.00 mg·L^-1 NAA or IBA, and the increases were the highest at concentrations of 0.10 - 0.50 mg·L^-1. One more thing，the effects of NAA on the increase rate of fresh weight and putrescine content were higher than that of IBA at the same concentration. With the increase concentration of ZT or 6-BA at 0.08 - 4.0 mg·L^-1, the increase rate of fresh weight, protein, PAs and NO contents increased gradually. Moreover, the effects of 6-BA on increase rate of fresh weight and putrescine content is higher than that of ZT at the same concentration. Auxin and cytokinin promoted the growth accompanied with the elevated production of PAs and NO, and the growth dynamics showed the similar trend with the contents of PAs and NO in explants in vitro.
  

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• The Relationship between Expression Patterns of Two Members of hmgr Gene Family and Superficial Scald in Eearly Maturity Sandy Pear 'Cuiguan' during Shelf Life
• CONG Yu;LI Hui;YAN Zhi-mei;YU Ming-liang;and CHANG You-hong
• Acta Horticulturae Sinica. 2009, 36(7): 959-966.
• Abstract ( 2045 ) HTML ( 1260 ) PDF (850KB) ( 1260 ) 　　　
• In this study, Pphmgr1 and Pphmgr2, two members of hmgr gene family which encodes α-farnesene metabolism rate-limiting enzyme HMGR were cloned from scald-susceptible sandy pear variety 'Cuiguan' peel, respectively. Pphmgr1 cDNA has an open reading frame of 1 827 nucleotides and encodes a polypeptide including 609 residues which relative molecular mass was 64.80 kD; while Pphmgr2 cDNA has an opening reading frame of 1 707 nucleotides and encodes a polypeptide including 569 residues which relative molecular mass was 60.21 kD. The deduced amino acid sequences were from Pphmgr1 and Pphmgr2 showed 90% and 98% homology with apple MdHMGR1 and MdHMGR2, respectively. Under high temperature shelf life condition (28~32 ℃), ethylene receptor inhibitor 1-MCP significantly decreased respiration rate and alleviated ethylene production rate. At the same time, α-farnesene and conjugated trienols contents were significantly decreased and occurring times of their peak values were postponed together. The semi-quantitative RT-PCR results showed that Pphmgr1 was constitutively expression, while expression of Pphmgr2 was inhibited by 1-MCP obviously. The results showed that under the experiment temperature conditions (28-32 ℃) 1-MCP inhibited ethylene metabolism and respiration rate so as to decrease the expression abundance of Pphmgr2, which probably directly led to the depression of α-farnesene synthetic metabolism and thus to reduce the superficial scald incidence of 'Cuiguan' pear after harvest at last.
  
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• Construction of a Subtractive cDNA Library Between Fruit Epicarp and Pulp of Ponkan Mandarin and Primary Analyses of the Sequences
• YE Qing-liang;JIANG Dong;and PENG Ai-hong
• Acta Horticulturae Sinica. 2009, 36(7): 967-974.
• Abstract ( 2203 ) HTML ( 1270 ) PDF (413KB) ( 1270 ) 　　　

• A cDNA library was successfully constructed via suppression subtractive hybridization between fruit epicarp (experimental group, tester) and pulp (control group, the driver) of Ponkan(Citrus reticulata Blanco). Results showed that most of the clones had inserting fragments which length ranged from 100 bp to 500 bp. Four hundred and eleven ESTs were successfully sequenced and searched against NCBI GenBank, The results indicated that 377 ESTs had significant similarities with known genes. All the ESTs were divided into 126 genes according to the gene annotation. These ESTs were mainly involved in pigment synthesis, energy metabolism, primary metabolism, secondary metabolism, defense against stresses, signal transduction, transcription, flavor formation, oil synthesis, peel softening, antioxidant metabolism et c. There were 63 uni-ESTs which accounted for 49.2% of the total ESTs and another 34 ESTs had no matching homologous sequences found.
  

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蔬菜

• Evaluation of Parthenocarpy in Cucumber Germplasm
• YAN Li-ying;LOU Li-na;LI Xiao-li;FENG Zhi-hong;LOU Qun-feng;and CHEN Jin-feng
• Acta Horticulturae Sinica. 2009, 36(7): 975-982.
• Abstract ( 2554 ) HTML ( 1647 ) PDF (389KB) ( 1647 ) 　　　

• Parthenocarpy of 75 cucumber germplasm and cultivars was evaluated under greenhouse condition in spring season. The results showed that the parthenocarpy percentage of 75 accessions was continuously distributed from 0 to 100% . While 40 accessions were found strongly parthenocarpy (53.3%), 24 were medium (32%) and 11 were weakly parthenocarpic (14.7%). 20 out of the 24 cultivars were found as strong parthenocarpy (83.3%), and the rest was mid-parthenocarpy. The degree of parthenocarpy was expressed by the fruit set capability, and the fruit weight and fruit shape index of the seedless fruit present a good similarity with that of the seeded. The cucumber plants get stronger parthenocarpic with the nodes increase and the best evaluation should be done under 20th nodes.

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• Anatomy Observation and Morphogenetic Causation of Non-lateral Branch Cucumber Line S61
• JIANG Su;CAI Run;PAN Jun-song;and HE Huan-le
• Acta Horticulturae Sinica. 2009, 36(7): 983-988.
• Abstract ( 1950 ) HTML ( 1152 ) PDF (429KB) ( 1152 ) 　　　
• Lateral branching and inflorescence are important components of plant architecture. Plant usually changes from vegetative growth to reproductive growth. A cucumber line S61 with non-lateral branch phenotype was observed in greenhouse for several years. Both anatomy observation and different growth condition tests had been taken in this study. The results showed that the axillary meristem of line S61 had differentiated to flower buds. Inflorescence reversion could happen in S61 when growth condition changed. Anatomy comparison results between had/non lateral-branching cucumber lines proved that at the early steps of development, axillary primordium were all the same, differentiation aspect were determined mainly by inheritance.
  
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• Genetic Study on Sugar and Sour Traits of Melon（Cucumis melo L.）
• ZHANG Hong;WANG Huai-song;HE Chao-xing;ZHANG Zhi-bing;ZHANG Xian;YI Hong-ping;and WU Ming-zhu
• Acta Horticulturae Sinica. 2009, 36(7): 989-996.
• Abstract ( 2026 ) HTML ( 1398 ) PDF (447KB) ( 1398 ) 　　　

• Four generations of P₁, P₂, F₁ and F₂ were used to study the inheritance of melon sugar content、sour content and sugar acid radio traits in mutation inbred line with sour taste (76-2 by ⁶⁰Co- γ irradiation) and 'Huangpicui' by joint analysis method of multiple generations. The results showed that the sugar content was controlled by two pairs of equal additive major genes plus additive-dominant polygene (E-4 model). The major gene heritability is 88.8%; the polygene heritability is 6.94%. The inheritance of sour content fitted one pair of additive-dominance major gene plus additive-dominance-epitasis polygene (D-0 model). The major gene heritability is 26.68%; the polygene heritability is 72.77%. Sugar acid radio trait fitted two pairs of additive-dominance-epitasis major genes plus additive-dominant polygene (E-1 model). The major gene heritability is 82.86%; the polygene heritability is 16.02%.
  

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• Study on Signal Pathways of The Potato Late Blight Resistance Gene R3a, RB Using VIGS
• Cui Yan-hong;Jia Zhi-qi;Li Ying;and Huang San-wen
• Acta Horticulturae Sinica. 2009, 36(7): 997-1004.
• Abstract ( 2682 ) HTML ( 2567 ) PDF (596KB) ( 2567 ) 　　　

• R3a and RB confer resistance to potato late blight by recognizing the effector protein Avr3a and Avrblb1 of Phytophthora infestans. R gene mediated resistance requires multiple signal transduction pathways. Virus-induced gene silencing (VIGS) is a powerful tool for studying genes participation in signal pathways. Eight genes, SIPK, NDR1, SGT1, HSP90, NPR1, Rar1, EDS1 and WRKY1 from other species are known to be involved in defence-related signal pathway. Expression of each gene was suppressed by VIGS in Nicotiana benthamiana and the effect was determined on Hypersensitive Response symptoms induced by RB-Avrblb1 and R3a-Avr3a. R3a- and RB-mediated resistance was compromised by the silencing of HSP90 and SGT1, suggesting that the RB-Avrblb1 and R3a-Avr3a interaction are dependent on ubiquitin ligase-associated protein SGT1 and heat-shock protein HSP90. The establishment of this system will identify new genes involved in resistance to late blight.
  

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• Effect of Soil Moisture on Plant Growth, Contents and Components of Essential Oil in Fennel (Foeniculum vulgare Mill.)
• XIAO Yan-hui;HE Jin-ming;WANG Yu-mei;and REN An-xiang
• Acta Horticulturae Sinica. 2009, 36(7): 1005-1012.
• Abstract ( 2037 ) HTML ( 1101 ) PDF (393KB) ( 1101 ) 　　　

• Effects of soil water on plant growth, contents and components of essential oil in fennel were studied , by controlling soil water content at low (relative water content, 44.46%±1.22%~52.84%±2.34%), middle (relative water content, 59.75%±3.11%~77.85%±3.47%) and high (relative water content, 75.24%±3.24%~99.27%±5.67%) levels. The results showed that, with increasing of soil water content , plant height, number of node, root and shoot fresh weight(FW), plant FW, content of total carbon, yield of essential oil per. plant and Chl.a/Chl.b ratio were elevated, but root/shoot ratio, contents of total nitrogen, proteinic nitrogen, Chl.a, Chl.b and CAR were decreased; Number of inflorescence, contents of essential oil and solubility sugar were higher in middle level water treatment, while they were lower in low and high level water treatments; Twenty-two chemical compounds were also identified in different soil water treatments, relative content was no difference (α=0.05) in α-Pinene, Sabinene, β-Pinene, γ-Terpinene, Terpinolen and Myristicin, but was significant ( α=0.05,0.01) in other sixteen compounds; With increasing water content , content of (E)-anethole, the dominant component in essential oil, was enhanced at 41.34%, 53.87% and 62.97%; Limonene was the second abundant material in oil, its content was decreased at 44.77%, 34.77% and 22.16%. This study indicated that lower water content had a positive role in accumulation of Limonene, and higher water content was relatively favour for storage of (E)-anethole in fennel.
  

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观赏植物

• Isolation and Expression Analysis of Key Genes Involved in Anthocyanin Biosynthesis of Cineraria
• HU Ke;MENG Li;HAN Ke-ting;SUN Yi;and DAI Si-lan
• Acta Horticulturae Sinica. 2009, 36(7): 1013-1022.
• Abstract ( 2368 ) HTML ( 2080 ) PDF (2110KB) ( 2080 ) 　　　

• To study different structural genes expression pattern in anthocyanin biosynthesis pathway of cineraria with different flower color, internal segments of five structural genes, chalcone synthase (CHS), chalcone isomerase (CHI), flavanone 3-hydroxylase (F3H), flavonoid 3'-hydroxylase (F3'H) and dihydroflavonol 4-reductase (DFR), were isolated from cineraria petals using RT-PCR. Using semi-quantitative reverse transcriptase polymerase chain reaction (RT-PCR), the expression patterns of CHS, CHI, F3H, F3'H, DFR, flavonoid 3',5'-hydroxylase (F3'5'H) and anthocyanin 3-O-glucoside-6"-O-malonyltransferase (3MaT) in five developmental stages of cineraria with different flower colors were determined for the first time. The results indicated that there is no CHS transcript in white flowers. In red flowers, F3'H mRNA was expressed at high level. But no F3'5'H transcript was found. F3'5'H was highly expressed in Stage I but no F3'H mRNA was observed in blue flowers. And the transcripts of F3'H and F3'5'H were found in purple petals. In addition, these genes were expressed at high level in early stage and underwent moderate decreases in expression. Interestingly, genes expression level increased again in Stage IV. However, in Stage V, there is little expression level could be detected in petals.

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• Studies on the Meiosis of Pollen Mother Cell and Pollen Development of Picea koraiensis Nakai
• ZHANG Shou-gong;HAN Su-ying;YANG Wen-hua_;Li Mao-xue;SUN Xiao-mei;QI Li-wang
• Acta Horticulturae Sinica. 2009, 36(7): 1023-1030.
• Abstract ( 2470 ) HTML ( 1466 ) PDF (1494KB) ( 1466 ) 　　　
• Using the squashing technique, meiosis and pollen development of Picea koraiensis were investigated. Our results showed that meiosis of Picea koraiensis started in spring and last about 2-3 months. The main configuration of bivalents was the ring ones caused by more than two times of chromosome exchanges on the arms. The rod-bivalents produced by chromosome exchange at only one arm were rarely observed. The microscopic appearance of meiosis in this species showed pronounced diffuse stage between pachytene and diplotene. Cytokinesis of Picea koraiensis is simultaneous type, resulting in tetrahedral tetrads. However, tetrad configurations were also affected by the orientations of the second meiotic axes leading to the formation of different shaped tetrads. At metaphase II, the spindle axis was occasionally oriented parallel to each other instead of perpendicular as expect theoretically, then the four haploid nuclei were kept in a transitory syncytium in tetragon. After callose wall was dissolved, independent single-nucleus pollens formed. After then, the haploid nucleolus underwent three cycles of mitotic division, resulting in the formation of four-celled pollen with two prothallial cells, one body cell and one tube cell. The pollen development of Picea koraiensis is similar to that recorded in Pinus.
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• Cytological Observation on the Bulblet Induction of Lilium oriental ‘Sorbonne’
• QIAO Yong-xu;ZHANG Yong-ping;CHEN Chao;WANG Gui-lan;and DI Wei-wei
• Acta Horticulturae Sinica. 2009, 36(7): 1031-1036.
• Abstract ( 2009 ) HTML ( 1388 ) PDF (1607KB) ( 1388 ) 　　　

• The initiation and development of the bulbet of Lilium oriental ‘Sorbonne’ were studied by slicing up and histochemistry coloration. It was showed that the bulblet originated from 8-14th layer inner parenchyma cells near the axle of the scale. the development of bulblet could be diveded four stages according to morphogenesis changes. The saccharide was existed in meristematic tissue and vascular organization with mainly grain-like form, which was indicated that high content of saccharide could induce vascular organization, otherwise the protein was mainly distributed around nuclei duriong bulblet induction. The concentration gradient of saccharide and protein. was observed between meristematic tissue and surrounding parenchyma cells with higher saccharide and lower protein in the differentiation tissueand.

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研究简报

• Role of Abscisic Acid in Fruit Ripening of Peach
• CAO Yong-qing;LENG Ping;PAN Xuan;YAN Zhi-gang;and REN Jie
• Acta Horticulturae Sinica. 2009, 36(7): 1037-1042.
• Abstract ( 3506 ) HTML ( 2137 ) PDF (459KB) ( 2137 ) 　　　
• Changes of endogenous ABA content during fruit development as well as the effect of exogenous ABA and Fluridone treatment on ripening of detached peach (Prunus persica L.‘Hakuho’) fruit in the late development period were studied in order to discuss relationship between ABA and fruit ripening of peach. Accumulation of endogenous ABA during late period of peach development triggered peach fruit ripening, and the peak of endogenous ABA content initiated the fruit ripening process. The treatment of exogenous ABA promoted ripening and senescence process of detached peach fruits, and Fluridone treatment inhibited biosynthesis of endogenous ABA and ethylene production and delayed fruit softening. Ethylene maybe acted as an auxiliary factor to influence fruit ripening and senescence process.
  
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• Study on Volatile Constituents in Mainly Cultivated Apricot Native to Xinjiang
• WANG Hua-lei;FENG Jian-rong;FAN Xin-min;and HE Feng-jiang
• Acta Horticulturae Sinica. 2009, 36(7): 1043-1048.
• Abstract ( 1976 ) HTML ( 1201 ) PDF (323KB) ( 1201 ) 　　　
• Volatile constituents of main apricot cultivars in Xinjiang were studied to provide basic information for production and breeding. The aromatic substances in the fruits of 14 apricot cultivars , including Kuchexiaobaixing,Guoxiyulvke,Kuerleituoyong,Dayoubai,Heiyexing,Danxing,Kuchetuoyong,Kuikepiman,Dayoujia,Saimaiti,Kumaiti,Luotuohuang,Mulongxing and Aketuoyong,were identified by using headspace solid phase microextraction and GC-MS. Results showed that 208 aromatic components were identified, including 80 kinds of esters, 25 kinds of aldehydes, 21 kinds of ketones, 39 kinds of alcohols, 27 kinds of alkyl substances, one kind of acid substances and 15 kinds of other substances. The main volatile constituents were propyl acetate; 3-methyl-1-butanol, acetate; 3-hexen-1-ol, acetate, (Z)-; D-limonene; β-linalool; hexanal; hexyl acetate; butyl acetate; β-Myrcene; ethyl butanoate; β-cis-ocimene. Main volatile components and their relative contents were main differences among these cultivars, and there were no significant difference between the Northern China group and The Central Asian group varieties.
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• Effect of Soil Cadmium Content on Leaf and Fruit Cadmium Contents in Apple
• YU Yi-fei;LI Bao-guo;QI Guo-hui;GUO Su-ping;LIU Wen-fei;LI Ying-chao
• Acta Horticulturae Sinica. 2009, 36(7): 1055-1059.
• Abstract ( 1923 ) HTML ( 1395 ) PDF (256KB) ( 1395 ) 　　　
• 10-year-old pot cultured Fuji apple trees were used as materials to study the effect of soil cadmium content on leaf and fruit cadmium content in apple. The results showed that: There was a significant positive correlation between the cadmium content of fruit and soil in different growth period. Leaf cadmium content increased with the time of soil treatmented by cadmium went on during the leaf growth, and it reached the peak value at the period of fruit slow growing period(23th,Sep), and then declined. Soil cadmium content had a significant influence to fruit cadmium content in fruit maturing. According to the fruit and soil cadmium contents with different cadmium treatment in fruit autumn to estimate that the threshold cadmium content of soil for producting pollution free apple in brown soil(pH 7.133) was 2.59 mg·kg^-1.
  
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• Changes of Chilling Tolerance in Different Sections of Cucumber Fruit
• ZHAO Yu-ying;YANG Jing;CHEN Jin-feng;and MAO Lin-chun
• Acta Horticulturae Sinica. 2009, 36(7): 1060-1064.
• Abstract ( 2038 ) HTML ( 1201 ) PDF (435KB) ( 1201 ) 　　　

• To determine the chilling tolerance of cucumber fruit after harvest, cucumber (Cucumis sativus L. ‘Jinyou 1’) fruit were stored at 2 °C for 9 days before ripening at 20 ℃ for 2 days. Chilling injury index, electrolyte leakage, activities of phospholipase D (PLD) and lipoxygenase (LOX), membrane-associated Ca²⁺ content in the calyx, middle and stalk sections of cucumber fruit were determined, respectively. Chilling injury occurred initially in the calyx area, and developed toward the middle and stalk end. After storage, chilling injury index, electrolyte leakage, activities of PLD and LOX in calyx section were highest, and lowest in stalk section of the fruit. Content of membrane-associated Ca²⁺ increased from calyx to stalk. Date indicated that increasing tolerance to chilling temperature from calyx to stalk of cucumber fruit was significantly related with the stimulation of PLD and LOX activities and decrease of membrane-associated Ca²⁺ content.
  

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• Allelopathy of Hexanedioic acid, bis(2-methylpropyl) ester to Verticillium Wilt（Verticillium dahllae）and Eggplant Seedling Growth
• LIU Na;ZHOU Bao-li;LI Yi-xiu;ZHANG Jian;CHEN Feng;JIA Qian;Lu Bo
• Acta Horticulturae Sinica. 2009, 36(7): 1065-1070.
• Abstract ( 1827 ) HTML ( 1101 ) PDF (271KB) ( 1101 ) 　　　
• Allelopathy of hexanedioic acid, bis(2-methylpropyl) ester exudated by grafted eggplant roots to Verticillium wilt（Verticillium dahllae）and seedling growth was studied by using simulative method. The results showed that hexanedioic acid, bis(2-methylpropyl) ester had a significant suppression to the mycelium growth in early stage during culturing Verticillium dahllae. When the mycelium growing to 7 d, 1 mmol·L^-1 had the best inhibitory effect. Until 11 d, hexanedioic acid, bis(2-methylpropyl) ester promoted the mycelium growth. The results of field investigation indicated that hexanedioic acid, bis(2-methylpropyl) este enhanced the disease resistance of eggplants at all the concentrations and the best effect presented in 0.5 mmol·L^-1 treatment. Hexanedioic acid, bis(2-methylpropyl) ester exhibited allelopathic promotion at a low concentration and allelopathic inhibition at a high concentration on eggplant seed germination, seedling growth. While the MDA content and relative electricity conductivity were inhibited by hexanedioic acid, bis(2-methylpropyl) ester at a low concentration, and the inhibitory rates were enhanced with the increasing concentration. Up to 1 mmol·L^-1, hexanedioic acid, bis(2-methylpropyl) ester presented allelopathic promotion.
  
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• Efficient Micropropagation of Japanese Photinia [Photinia glabra (Thumb.) Maxim.] Retaining Genetic and Epigenetic Stability
• LI Yi-dan;TAN Hua;SHAN Xiao-Hui;LI Feng-xia;and LIU Yan-zhi
• Acta Horticulturae Sinica. 2009, 36(7): 1071-1076.
• Abstract ( 2147 ) HTML ( 1217 ) PDF (622KB) ( 1217 ) 　　　
• We established a tissue culture system for efficient micropropagation of Japanese Photinia [Photinia glabra (Thunb.) Maxim.] by enhanced branching of axillary buds taken from branches of a single donor tree. The culture system consists of choosing the suitable explant coupled with sequential use of three media，namely，the bud-induction medium (MS medium supplemented with 1.2 mg·L^-1 BAP，0.2 mg·L^-1 NAA)，subculture medium (WPM medium added with 0.75 mg·L^-1 BAP，0.15 mg·L^-1 NAA) and root-induction medium (half-strength MS medium fortified with 2.5 mg·L^-1 IAA and 0.3 mg^-1 IBA). In addition，by using AFLP and MSAP markers we investigated the genetic and DNA methylation pattern stability of samples of 36 and 24 morphologically normal plants respectively，which were randomly taken from a population of more than 100 000 micropropagated plants established in the field. We found that of the 615 and 392 reproducible bands scored respectively for AFLP and MSAP，no evidence for occurrence of genetic or epigenetic instability. This，together with phenotypic uniformity of the micropropagated population，suggests that micropropagation through enhanced axillary bud branching ensured genetic and epigenetic fidelity of the donor plant in Japanese Photinia. Therefore，the protocol reported here can be readily employed for large-scale commercial propagation of this ornamental plant species.
  
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• Anatomical Structure observation of Stem Blockage in Cut Gerbera Flowers
• HE Su-dan;XIAO De-xin;LIU Ji-ping;HE Sheng-gen;TU Shu-ping;and Lü Pei-tao
• Acta Horticulturae Sinica. 2009, 36(7): 1077-1082.
• Abstract ( 2450 ) HTML ( 1377 ) PDF (647KB) ( 1377 ) 　　　

• On the basis of anatomical observation, the postharvest stem blockage in cut gerbera (Gerbera jamesonii) flowers and the effect of the nano silver treatment were investigated.The results showed that the obvious vascular blockage was found in the cut stem end，but not in the stem segments of upper and middle parts of cut gerbera flowers. Observation under SEM certified that the vascular blockage was resulted from bacteria. Pulsing the stem end of cut gerbera flowers for 24 h in nano silver solution, the vascular blockage could be significantly alleviated and delayed, and the vase life was also markedly prolonged.
  

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新品种

• A Mid-ripening Nectarine Cultivar‘Ruiguang Meiyu’
• GUO Ji-ying;JIANG Quan;ZHAO Jian-bo;CHEN Qing-hua;and LI Xin-yue
• Acta Horticulturae Sinica. 2009, 36(7): 1083-1083.
• Abstract ( 1663 ) HTML ( 1121 ) PDF (286KB) ( 1121 ) 　　　
• ‘Ruiguang Meiyu’ is a mid-ripening nectarine (Prunus persica var. nectarina (Ait.) Maxim) variety derived from the cross of Jingyu×Ruiguang 7. The fruit development period (FDP) is 98 days. Its average fruit mass is 187 g. The fruit is round, white fleshed, stony hard fleshed, sweet and freestone.
  
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• A Red High Quality and Resistance Wine Grape Cultivar ‘Beimei’
• WANG Li-jun;LI Sheng-chen;FAN Pei-ge;YANG Mei-rong;WU Ben-hong;Duan Wei;LI Lian-sheng;ZHONG Jing-yi;ZHANG Ying-zhu;WEN Li-zhu;ZHANG Feng-qin;LUO Fang-mei;and LI Shao-hua
• Acta Horticulturae Sinica. 2009, 36(7): 1084-1084.
• Abstract ( 2085 ) HTML ( 1107 ) PDF (94KB) ( 1107 ) 　　　
• ‘Beimei’ is a late- ripening red wine cultivar derived from ‘Muscat’ (Vitis vinifera) and V. amurensis. Berries mature during the last 10 days of September in Beijing. The fruit cluster is conical and medium-dense, weighing 160 g on average with uniformly sized berries. The average weight of a single berry is 2.6 g. The berry is elliptic and purple-black. The flesh is soft and acid- sweet juicy with 20.4 %- 25.4 % soluble solid content, 0.87 %- 1.17 % titrable acid content and production of juice 77.7 %。It has high resistance to cold, disease. The red wine produced is bijou red, sour and sweet palatable, and has gentle and balanced taste. Especially, the red wine has aroma like rose flower and can be hold.
  
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• A High-resistantance and quality Wine Grape Cultivar ‘Beihong’
• FAN Pei-ge;LI Sheng-chen;WANG Li-jun;YANG Mei-rong;WU Ben-hong;LI Lian-sheng;ZHONG Jing-yi;ZHANG Ying-zhu;WEN Li-zhu;ZHANG Feng-qin;LUO Fang-mei;Duan Wei;and LI Shao-hua
• Acta Horticulturae Sinica. 2009, 36(7): 1085-1085.
• Abstract ( 1855 ) HTML ( 1158 ) PDF (95KB) ( 1158 ) 　　　
• ‘Beihong’is a late-ripening red wine cultivar derived from ‘Muscat Hamburg’ × ‘V. amurensis’. Berries mature during the end of September in Beijing. The fruit cluster is conical, weighing 160 g on average. The average mass of a single berry is 1.57 g. The berry is circular and blue black. The flesh is soft and red acid-sweet juice with 23.8%- 27.0 % soluble solid content, 0.89%- 1.26% titratable acid content and 62.9% juice extraction. The wine made from its berry is deep ruby, clear and translucent with aromas resembling a hint of blueberry and plum, rich and well balanced on the palate. It has high yield and resistance to cold and diseases.
  
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• A New Walnut Cultivar‘Jinboxiang 7’
• TIAN Jian-bao;WANG Yong;WU Yan-xia;CHENG En-ming;SHAO Jia-ming;and LIU Zhao-hong
• Acta Horticulturae Sinica. 2009, 36(7): 1086-1086.
• Abstract ( 1832 ) HTML ( 1008 ) PDF (93KB) ( 1008 ) 　　　
• ‘Jinboxiang 7’is a new walnut cultivar which bred from the Xinjiang walnut for over 20 years. The nut is round, smooth surface , full and plump. It is easy to get the kernel from the nut. The kernel is light yellow with milky white flesh and excellent quality. It has a good productivity, high resistant to cold, drought and disease, and late blossom.
  
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• A New high-quality，Large-size and Processing Jujube Cultivar ‘Cangmi 1’
• LI Zhi-xin;LIU Jin-yu;ZHANG Li-shu;LIU Yong-ji;MIAO Feng;SUN Xiu-kun;ZHANG Wei-dong;and HUANG Su-fang
• Acta Horticulturae Sinica. 2009, 36(7): 1087-1087.
• Abstract ( 1596 ) HTML ( 1034 ) PDF (74KB) ( 1034 ) 　　　
• ‘Cangmi 1’ is a new jujube cultivar which selected from jujube germplasm resources.According to the selection objective and character standard,The average weight of simple fruit is 17.2g,the fruits are oval,the size of fruits is neat during white ripe season,the surface of fruits is clean and smooth,the peel is thin,the pulp is loose,the flavor of fruits is sweet and sour, the esculent rate is 97.7%.Fruits turn to white in the middle of August, and it matures in mid of September.
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• A New Tomato Cultivar ‘Jinxiang Fanzao’
• CHEN Xue-jun;LI Wei;Zhang Hui-ling;CHEN Wei-wen;and CHEN Jing
• Acta Horticulturae Sinica. 2009, 36(7): 1088-1088.
• Abstract ( 1790 ) HTML ( 1142 ) PDF (73KB) ( 1142 ) 　　　
• ‘Jinxiang Fanzao’is a new tomato cultivar which is early-mature,heat-resistant.It takes 125 days from the sprouting to maturity of about 90% of the fruit.Compared with the control‘Canada 8’,the fruit become mature 8 d earlier.The fruit is red and round,flesh thick is 0.5 cm. The average fruit weight 186 g. It has good resistance and high-yield.The yield is 101561.25 -11094.5 kg.hm^-2, increasing 31.4% compared with ‘Canada 8’.
  
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• A New Eggplant Cultivar ‘Qieza 6’
• PAN Xiu-qing;WU Yan-rong;GAO Xiu-rui;WANG Hong-chang;LI Bing;and YAN Shu-cheng
• Acta Horticulturae Sinica. 2009, 36(7): 1089-1089.
• Abstract ( 2418 ) HTML ( 1045 ) PDF (289KB) ( 1045 ) 　　　
• ‘Qieza 6’is a new eggplant cultivar developed by crossing lines ‘134’ with ‘Yuanza-Heibian-1-1-M’, which is fit for planting in plastic tunnel in spring and autumn. It has good properties of Low Temperature Tolerance，fruitting easily，good coloring and high resistance to disease. The number of nodes under the first flower is 7-8. Its fruit is oblate-shaped, bright-dark, and the color of the fruit pulp is light green. The average fruit weight is 850-950g. Its yield amounts to 90-105t·hm^-2.
  
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• A New Rosa Cultivar‘Teqiao’
• BAO Ping-qiu and ZHANG Lei
• Acta Horticulturae Sinica. 2009, 36(7): 1090-1090.
• Abstract ( 1747 ) HTML ( 1038 ) PDF (336KB) ( 1038 ) 　　　
• 'Teqiao' is a new rose cultivar. It is a shrub-like rose.It is green leaves,single red rose flower and strong growth potential. It's flower diameter is 5-7 cm,corymbosa-shaped,florescence from April to November.It almost does not produce fruit and seed.
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