研究论文

• A Study on Bud Chilling Requirements of Fruit Trees in Greenhouse
• Gao Dongsheng;Shu Huairui;and Li Xianli
• Acta Horticulturae Sinica. 2001, 28(4): 283-289.
• Abstract ( 2909 ) HTML ( 2345 ) PDF (331KB) ( 2345 ) 　　　
• Utah model was used for estimating bud chilling requirements of 65 fruit tree cultivars from 5 species in greenhouse during 1995 - 1999. Bud (both leaf and flower bud) chilling requirements were significant differences among different kinds of species and cultivars : grape and sweat cherry possessed the highest chilling requirements (respectively 1 010 - 1 840 c. u , 910 - 1 240 c. u) , chiuing reqairement of plum and apricot were lower (800 - 880 c. u , 790 - 910 c. u) , then those of peach cultivars were the lowest (500 - 910 c. u) . Moreover , the same cultivars had significantly different chilling requirements between different years , it indicated that chilling requirements
  not only were affected by genetic factors but also regulated by enviromental variations. No regular relationship was found between chilling requirements and fruit development period , It also noted that flower bud had higher chilling units than leaf bud in almost all the experimental cultivars. In procssing of endodormancy , root might have some effects and in the experiment it affected the chilling requirements : high root temperature (in fact the temperature was the most suitable for root growth and development) reduced the flower bud chilling requirements , but lower and natural root temperature had no effects. Spraying growth regulators of different concentration also affected the chilling requirements : 10 - 50 mg·L^-1 6-BA reduced the chilling requirements and sprouting or blooming , 10 -
  50 mg·L - 1 GA₃ increased the chilling requirements , but ABA had no ffects , compared with the control of spraying of H₂O.
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• Bagging Improves Storability of ‘Feizixiao Litchi’
• Hu Guibing;Wang Huicong;and Huang Huibai
• Acta Horticulturae Sinica. 2001, 28(4): 290-294.
• Abstract ( 1507 ) HTML ( 1080 ) PDF (220KB) ( 1080 ) 　　　
• This study aimed at clarifying the effect of pre􀀁harvest fruit cluster bagging on post harvest fruit storability. Adhesive􀀁bonded fabric bags were used to cover Feizixiao litchi fruit. The effects were observed under room temperature, without any chemical treatment and paper box packa ging. Higher water content and lower pH value in the pericarp were observed in bagged fruit with reduced fruit decay rate. Fruit bagging was shown to increase protein content and decrease peroxidase ( POD) act ivity in the pericarp. Thicker waxy layer was seen on the exocarp of bagged fruit and larger cells appeared in the spongy tissue of mesocarp. These changes seemed to prevent the pericarp from losing water and subsequent decay, to delay browning process and thus prolong the storage life.
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• Cloning and Characterization of the L EAFY Homolog in Citrus
• Chen Daming;Jin Yongfeng;and Zhang Shanglong
• Acta Horticulturae Sinica. 2001, 28(4): 295-300.
• Abstract ( 1188 ) HTML ( 1195 ) PDF (256KB) ( 1195 ) 　　　
• A pair of degenerate oligonucleotides to highly conserved regions at the 3’terminus of L EAFY ( L FY) gene and its homologues , the flower meristem identity genes , is used to amplify a fragment of 883 bp by PCR from the citrus genomic DNA. Sequencing indicated that there is an intron of 473 bp in the fragment . The splice donor site and the splice acceptor site are in identical position to the L FY gene and its homologues. The amino acid sequence deduced from the exons is 77 % - 97 % homologous to that of the corresponding regions of L FY and its orthologues. The expression patterns of
  the citrus L FY homolog ( csL FY) were analyzed by RT2PCR. The result indicates that csL FY expression was detected in vegetative and flower buds from the adult tree as well as vegetative buds from the several month old seedlings. However , the level of the csL FY transcripts in the juvenile buds
  is lower than in the flower buds.
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• Cryopreservation of Citrus Shoot-tips by Vitrification and Regeneration
• Wang Zicheng and Deng Xiuxin
• Acta Horticulturae Sinica. 2001, 28(4): 301-306.
• Abstract ( 1270 ) HTML ( 1316 ) PDF (229KB) ( 1316 ) 　　　
• A procedure had been studied on cryopreservation of citrus shoot2tips in vitro by vitrification. Shoot-tips of citrus about 10 mm were precultured for 3 days in MT medium supplemented with 5 % DMSO. The excised shoot2tips , 2 - 2. 5 mm in length , were loaded with 60 % PVS2 for 20 - 30 min at room temperature , and were exposed to PVS2 at 0 ℃for 50 - 60 min. Followed by changing the solution with fresh PVS2 , the shoot2tips were immersed into LN directly , and kept for 24 h. After rapid thawing in a water bath at 40 ℃, the shoot2tips were washed with 1. 2 mol/ L sucrose solution for twice and transferred onto MT medium supplemented with BA 1. 0 mg/ L. The cultures were kept in dark for one week prior to exposure to the light . Survival rate of shoot2tips of Poncirus trifoliata was 100 % by TTC examination , and regeneration rate reached to 90 %. The plantlets rooted normally and survived after transplantion. No morphological difference between the regenerated
  plantlets and the control was observed.
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• Effect of Soil Moisture on Plant Growth and Fruit Properties of Strawberry
• Liu Mingchi;Kojima Takayuki;Tanaka Munehiro;and Chen Hang
• Acta Horticulturae Sinica. 2001, 28(4): 307-311.
• Abstract ( 3095 ) HTML ( 1592 ) PDF (201KB) ( 1592 ) 　　　
• The effects of soil moisture on the plant growth , yields , physical and chemical properties of strawberry fruit were studied by use of a new auto-irrigation systemof negative pressure. It was showed that plant height , number of leaves , fruit weight , fruit diameter , fruit number and yields gradually decreased with the decreasing of soil moisture. The physical and chemical properties were apparently different under different soil moisture treatments. The Deficit Irrigation decreased water content of fruit , increased fruit hardness , soluble solid content , titratable acidity , sugar-acid
  ratio and the content of ascorbic acid. The correlation analysis indicated that soil moisture has a positive correlation with the fruit diameter and weight , but has a negative correlation with soluble solid content and sugar-acid ratio.
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• The Effects of Nitrogen and Zinc Nutrition on Nucleic Acid and Calmodulin during the Growth and Development of Curd in Broccoli ( Brassica oleracea L. var. italica Planch)
• Yang Xian and Li Deming
• Acta Horticulturae Sinica. 2001, 28(4): 312-316.
• Abstract ( 1322 ) HTML ( 1098 ) PDF (173KB) ( 1098 ) 　　　
• The content of DNA, RNA and total nucleic acid ( TNA) in stem apex increased
  gradually before the inflorescence differentiation, and reached a peak at the inflorescence differentiation, then decreased to a proper level at one week after the inflorescence differentiation and increased again to form little peak at the former stage of curd formation, then decreased again at the late stage of curd formation. The RNA/ DNA rat io went down rapidly just before the emergence of curd, and went up gradually from the emergence to harvest of curd. The content of Calmodulin ( CaM) in stem apex went up gradually before the inflorescence differentiation and reached a peak after one week of the in florescence differentiation, then went down during curd format ion. N-Zn nutrition could promote the metabolism of nucleic acid and CaM, but different N-Zn nutrition had different effects on the synthetic activity of nucleic acid. Suitable N and Zn nutrit ion had a marked promoting effect on the synthesis of CaM.
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• Genetic Effects Analysis of Economic Characters in Momordica charantia
• Hu Kailin and Fu Qunmei
• Acta Horticulturae Sinica. 2001, 28(4): 323-326.
• Abstract ( 1321 ) HTML ( 1184 ) PDF (173KB) ( 1184 ) 　　　
• The genetic effects of node of 1st female flower , fruit number per plant , individual fruit weight , fruit length , fruit width , pulp thickness in Momordica charantia L. were analysed on the data from the parents , F_1, F_2, B₁ and B₂ of two cross as ( ZH967281 ×G968031 and ZH961123 ×G968031) by using three inbred lines with significant difference. The results showed that genetic patterns of six economic characters all accorded with the pattern of additive-dominance and additive effect was major. Node of 1st female flower , fruit number per plant , individual fruit weight , fruit length and fruit width were all positive dominance partially and tended to the larger parent , but
  pulp thickness was negative hyperdominance and tended to the smaller parent . The narrow heritability of node of 1st female flower , fruit number per plant , individuam fruit weight , fruit length , fruit width and pulp thickness were 69. 23 % , 61. 94 % , 61. 64 % , 76. 18 % , 28. 98 % , 35. 09 % ,
  respectively.
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• Tissue Culture and High Frequency Propagation of Opuntia milpa altaHaw.
• Chen Lijing;Pan Ying;Ma Hui;Liu Shaoxia;Jiang Minglan;and Zhong Wentian
• Acta Horticulturae Sinica. 2001, 28(4): 327-330.
• Abstract ( 1490 ) HTML ( 1609 ) PDF (173KB) ( 1609 ) 　　　
• Effects of several factors such as medium , cutting materials and plant growth regulators on in vitro culture and rapid propagation of Opuntia milpa alta Haw. were investigated. Using the Opuntia milpa alta Haw. stem as explant , a method for high frequency propagation of Opuntia milpa alta Haw. was established. The results of the experiments suggested that the appropriate medium for different culture stages were : (1) Germination of adventitious buds : MS + 6-BA 3. 0 mg/ L + NAA 0. 1 mg/ L. On this medium shoot multiplication occurred at a 82fold rate after 30 days ; (2)
  Differentiation and subculture of rosette buds : MS + 6-BA 1 mg/ L + KT 0. 5 mg/ L + NAA 0. 3 mg/L ; (3) Rootage : 1/ 2 MS + NAA 0. 1 mg/ L + IBA 0. 1 mg/ L. The shoots could be directly rooted in transplantation medium (soil , vermiculite and sand in equal proportion) with up to 95 % survival .
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• Relationships Analysis of Chinese Cabbage Species by AFLP
• Sun Deling;Zhao Qiancheng;Song Wenqin;and Chen Ruiyang
• Acta Horticulturae Sinica. 2001, 28(4): 331-335.
• Abstract ( 1355 ) HTML ( 1198 ) PDF (216KB) ( 1198 ) 　　　
• Genome relationships of Chinese Cabbage species were studied by molecular marker technology AFLP. 4173 bands were detected with 10 pairs of primers. Clustering analysis showed that it is distant between turnip and Chinese Cabbage ; Jiguancai (Brassica campestris L. ssp. chinensis Makino) and Maobaicai ( Brassica campestris L. ssp. chinensis Makino) are close to head Chinese Cabbage ( B . campestris L. ssp. pekinensis Olsson) which is distant to other non-head Chinese Cabbage varieties. The relationship among non-head Chinese Cabbage (B . campestris L. ssp. chi-nensis Makino ) varieties including Taicai , Caixin , Chaiwu , Jianganbai and Ma’erduobai was
  analyzed on molecular level in this paper , which provides some information of origins and evolution of Chinese Cabbage.
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研究报告

• Effect of Weed Fermentation Matters on Growth and Vesicular􀀁ArbuscularMycorrhizal Formation of Trifoliate Orange ( Poncirus trif oliata Raf. ) Seedlings
• Yang Xiaohong;Li Daogao;Takaaki Ishii;and Kazuomi Kadoya
• Acta Horticulturae Sinica. 2001, 28(4): 336-338.
• Abstract ( 1557 ) HTML ( 975 ) PDF (130KB) ( 975 ) 　　　
• 1% fermentation matters from four weeds ( Artemisia princeps Pampan, Cayracia jap onica Gagn, Ste llaria media Villars, Trifolium rep ens L. ) were respectively added into pot soils which contained high density propagules
  of vesicular􀀁arbuscular mycorrhizal fungi for culturing trifoliate orange ( Poncirus trifoliata Raf. ) seedlings. After 70 days, mycorrhizal infection rates were high in all treatments. But compared with the control, fernentation matters signi􀀁ficantly stimulated the growth of trifoliate orange seedlings, reduced the mycorrhizal formation in roots of seedlings, and there were lower infection rates in treatments of fermented weeds than in that of fermented liquids; High concentration of nitrogen also could reduce the mycorrhizal formation level; The phenomena of parasitism and growth depression in mycorrhizal citrus took place when the mycorrhizal infection rate was too high.
  
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• Effects of PP₃₃₃ and GA₃ on the Mechanism of Flower Bud Induction in Apple Tree
• Cao Shangyin;Tang Yizu;and Jiang Aihua
• Acta Horticulturae Sinica. 2001, 28(4): 339-341.
• Abstract ( 1340 ) HTML ( 1162 ) PDF (149KB) ( 1162 ) 　　　
• ‘Redchief’and‘Red Fuji’apple tree ( Malus domestica Mill. ) were used as materials to test for the effect of treatments of paclobutrazol ( PP₃₃₃ ) and GA3 on the contents of endogenous hormones in buds. The results
  showed that the contents of and ZR , and ZR/ IAA , ZR/ GAS , ABA/ IAA and ABA/ GAS ratios in spur bud were remarkably increased , PP₃₃₃ treatment by while GAS and IAA content in spur bud were decreased. The contents of GAS and IAA in spur bud were remarkably increased by GAS treatment , while ZR and ABA content , ZR/ IAA , ZR/ GAS , ABA/ IAA , and ABA/ GAS in spur bud were decreased. As to the effects of spraying PP₃₃₃ or GA₃ , it was noted that PP₃₃₃ could increase the leaf bud node number , but no effect was noted for flower bud ; GA₃ had no effect on the node number of leaf bud , but had a trend to decrease the node number for flower bud.
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• Regeneration of Peach Plantlet from Callus Derived from Explant
• Zhang Yongqing;Chen Daming;Jin Yongfeng;and Zhang Shanglong
• Acta Horticulturae Sinica. 2001, 28(4): 342-344.
• Abstract ( 1258 ) HTML ( 1162 ) PDF (143KB) ( 1162 ) 　　　
• Various explants of ‘Yulu’peach including leave , young shoot , hypocotyl , ovule , ovary , endosperm, immature embryo collected approximately 45 - 50 days or 75 days after full bloom , and mature embryo were cultured in vitro. As a result , only the white nodular callus derived from immature embryos collected 45 - 50 days and 75 days after bloom succeeded in producing adventitious buds , and the regeneration rates of white callus were 73. 8 %
  and 15. 5 % respectively. 62BA had stronger effect than KT in inducing adventitious bud formation. Adventitious shoots were transferred and cultured to plantlets. Effect of different hormone , carbon source , medium and transfer time on redifferentiation of adventitious buds from callus derived from immature embryos have been discussed.
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• Research on Outer Bottle Rooting Technique of Fruit Seedling in Vitro with Filter-paper Bridge
• Sun Zhongxu;Liu jing;Wang Yujun;Zhang Yanyi;and Qiu Zhilin
• Acta Horticulturae Sinica. 2001, 28(4): 345-347.
• Abstract ( 2352 ) HTML ( 1511 ) PDF (270KB) ( 1511 ) 　　　
• The rooting technique of fruit tissue culture system with filter paper bridge were studied in this experiment. The results indicated that the rooting rates of Zhumei crabapple and strawberry with filter-paper bridge were 20 %
  and 4. 1 % more than those of their controls respectively ; the rooting rate of cherry stock was same as that of its control , but the rooting time was decreased to 3 - 10 days ; the transplanting survival rates of these three kinds of fruit tree plantlets all increased up to 93 % , the survival rates of Zhumei crabapple , strawberry and cherry stock were increased by 16. 1 % , 21. 4 % and 14. 9 % respectively , compared with their controls ; the root vigor areas of Zhumei crabapple , Strawberry and cherry stock were increased by 6. 9 % , 11. 54 % and 7. 5 % , compared with their controls ; the thickness of epicuticle , hypodermis and pajisade tissue and the leaf stoma density of Zhumei crabapple were increased by 45. 8 % , 50. 3 % , 47. 6 % and 2. 5 % respectively , compared with its control. This method is simple and convenient. The cost of tissue culture could be cut down 75 % than traditional rooting methods.
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• The Effect of Ca ( NO₃ ) ₂ and GA Sprayed on Leaves on the Fruit Cracking of‘Nuomici’Litchi
• Peng Jian;Xi Jiabin;Tang Xudong;Wang Yuguo;Si Xuemei;and Cheng Jiasen
• Acta Horticulturae Sinica. 2001, 28(4): 348-350.
• Abstract ( 1403 ) HTML ( 1036 ) PDF (147KB) ( 1036 ) 　　　
• ‘Nuomici’Litchi trees (82year-old) were sprayed with calcium and gibberllin and the control trees were sprayed with water. The results showed that the treatment with Ca (NO₃) ₂ and treatment with GA all could reduce
  the proportion of cracking fruit distinctly , In the early stage , the content of water2soluble pectin and protopectin increased , meanwhile the content of protopectin increased more than the content of watersoluble pectin , but when the fruit was becoming ripe , the content of watersoluble pectin decreased gradually while the content of protopectin increased largely. PE and PGactivities tended to increase with fruit development till ripening stage when they turned to decrease sharply. There was significant correlation between PG activity and the content of water-soluble pectin. CX increased throughout the whole development and has two peaks.
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• Natural and Applied Wax Coatings on Valencia Orange and Their Effects onWeight Loss of Fruit
• Zhang Yungui;Cheng Minghao;Li Xiaolin;Wu Zhengqin;Xie Yonghong;and Pang Jie
• Acta Horticulturae Sinica. 2001, 28(4): 351-352.
• Abstract ( 1281 ) HTML ( 1015 ) PDF (129KB) ( 1015 ) 　　　
• The surfaces of Valencia orange fruits with natural and commercial wax coatings were examined by the scanning electron microscope (SEM) , and the effects of natural wax , washing , wax removal and waxing on weight loss
  of fruit were also discussed. The results show that the natural wax platelets on the surface of fruit are irregular in shape and size. Most natural platelets can be removed by dipping the orange in a chloroform-methanol solution. Removal of natural wax platelets resulted in heavy loss of water in the fruit. Waxing partially or completely plugs stomatal pores and effectively reduces the weight loss of fruit.
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• Studies on the Change of Flavone Contents and Its Distribution in Ginkgo biloba Leaves
• Cheng Shuiyuan;Wang Yan;Li Junkai;Gu Manru;and Shu Huairui
• Acta Horticulturae Sinica. 2001, 28(4): 353-355.
• Abstract ( 1496 ) HTML ( 1709 ) PDF (89KB) ( 1709 ) 　　　
• The flavone contents of Ginkgo biloba leaf stalks and leaves in different types of the branches and leafpositions were assayed in 1999. The results indicated that the flavone content rested on long-branch leaves had three
  peaks , but only two peaks in both middle-short branch leaves and phyllome-branch leaves. Of all the peaks , the last one showed the highest value in all types of the branches. At the same time , the increasing speeds of flavone contents queued from fast to slow: long-branch leaves , middle-short branch leaves , phyllome-branch leaves and the leaf stalks. However there was an opposite trend of the change of flavone content in the leaves and its leaf stalk during the late stage. Flavone content in the middle-position leaves of long2branches was the highest , that in the basal leaves was the second ,
  and that in the top-position leaves was the last. The relationship of the change of flavone content and its distribution with leaf classification , collection and trimming were discussed.
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• Preliminary Study on Transformation of Tumor Suppressor Gene p53 into Tomato
• Li Xiaodong;Cao Wanhong;Liu Ling;Chen Hang;and Cheng Zhihui
• Acta Horticulturae Sinica. 2001, 28(4): 356-358.
• Abstract ( 1270 ) HTML ( 1007 ) PDF (138KB) ( 1007 ) 　　　
• The strain GV3101 of Agrobacterium tumerf aciens harboring a plasmid carrying a human wild􀀁type tumor suppressor gene p 53 driven by the promoter of phaseolin was used to transform cv. Meiwei Cherry of tomato. Leaves of transgenic tomato plants were used for assaying the existence of foreign gene. Results of histochemical assay, PCR amplification and Southern blotting showed that the human wild􀀁type p 53 gene was integrated into the genome of transgenic tomato plants.
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• Callus Induction and Plantlets Regeneration of Tillered-onion from the Shoot-tip
• Chen Dian and Xu Qijiang
• Acta Horticulturae Sinica. 2001, 28(4): 359-360.
• Abstract ( 1517 ) HTML ( 1481 ) PDF (117KB) ( 1481 ) 　　　
• This paper reports the studies on in vitro culture of shoot-tip of illered-onion , including callus induction and differentiation , plantlet root development and transplantation. Results showed : (1) MS basal medium supplemented with 2 ,4-D 2. 0 mg·L^-1 and KT 0. 5 mg·L^-1 was advantageous to callus induction. The frequency of callus induction was 100 %. (2) The combination of NAA 0. 1 mg·L^-1 and BA 0. 4 mg·L^-1 was the best for callus differentiation with the ratio of 88. 3 %. Most of callus was aggrandized again and induced green bud spots then formed multiplying clumpy buds , the mean number of plantlets per callus was 10. 2 . (3) 100 % of the regenerated plantlets treated with NAA 0. 01 mg·L^-1 and IBA 1. 5 mg·L^-1 and PP₃₃₃ 0. 1 mg·L^-1 could develop their roots , grew robustly and robust green leaves , after the regenerated plantlets were transplanted to soil. The survival ratio of transplanting reached 100 %.
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• The Expression of Raphnus sativus-Antifungal Protein Gene and Its Transformation into Tomato
• Deng Xiaodong;Fei Xiaowen;and Hu Xinwen
• Acta Horticulturae Sinica. 2001, 28(4): 361-363.
• Abstract ( 1278 ) HTML ( 1086 ) PDF (152KB) ( 1086 ) 　　　
• Raphnus sativus-antifungal proteins ( Rs-AFPs ) are cysteine􀀁rich, antifungal proteins. The Rs-AFP₁₍₂₎ genes were inserted into the vector pTrxFus and transferred into E. coli GI724. The fusion protein from recombiant pTrxAFP_{1( 2)} was about 22 kD and taking up 0. 4 and 0. 5 percent of the total proteins respectively. Inhibition experiment showed that the expressed products had antifungal activity to Colletotrichum musae. Expressed products from pTrxAFP₂ showed much stronger inhibitory activity than that from pTrxAFP1. A plant expression vector pBIAFP₂ was constructed, which had been transferred into tomato by Agrobactrium mediated transformation. 32 plantlets had been obtained and 28 of them detected by PCR and Southern Blot. The results showed that 17 of them were positive, and the results of Southern Blot showed 6 of them were positive.
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• Preliminary Study on the Senescence Symptom and Vase Life of Different Cultivars of Cut Rose
• Bai Shuangyi and Liu Qinglin
• Acta Horticulturae Sinica. 2001, 28(4): 364-366.
• Abstract ( 1537 ) HTML ( 1384 ) PDF (88KB) ( 1384 ) 　　　
• 11 cultivars of cut rose were investigated on flowering index , flower diameter , senescence symptom , and the relationship between vase life and these indexes was also analyzed. The results indicated that the differences of flowering index , flower diameter and vase life of different cultivars were significant. The senescence symptoms which include wilt , bent neck , abscission , color change , brown stain and dry margin appeared in different order.
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• Process of Flower Bud Morphological Differentiation in Salvia splendens
• Tang Daocheng;Zhang Zhiying;and Zhao Liangjun
• Acta Horticulturae Sinica. 2001, 28(4): 367-369.
• Abstract ( 1440 ) HTML ( 997 ) PDF (145KB) ( 997 ) 　　　
• The process of flower bud morphological differentiation may be divided into 12 phases. There were stable sequence and relation among flower bud differentiation, leaf growth and parallel phases. Differentiation phase size
  changed with growing point size.
  
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• RAPD Analysis of Tree Peony Cultivars
• Chen Xiangming;Zheng Guosheng;and Zhang Shengwang
• Acta Horticulturae Sinica. 2001, 28(4): 370-372.
• Abstract ( 1081 ) HTML ( 1128 ) PDF (97KB) ( 1128 ) 　　　
• The genomic diversity of thirty-five tree peony cultivars of 7 different flower color were analised by RAPD. The results showed that 337 (80. 62 %) polymorphic sites were detected among the total 418 sites amplified indicating abundant genomic diversity of tree peony cultivars. Similar results were also revealed between accessions within the same flower color series , but significant differences were observed between different flower color series in the order as Blue series > Yellow > Dark red > Black >White > Green > Red ones based upon the percentage of the polymorphic sites.
  The genetic distance and genetic relationships of the accessions were constructed through unweighted paired group method with arithmetic averages cluster analysis , all accessions were grouped into 5 genetic types , no significant correlation between flower color series and genetic types were detected except Red flower series.
  
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新品种

• Freezing Injury Investigation of Apricot and Sweet Cherry Flowers
• Chen Xuesen;Shen Hongbo;and Zhang Yanmin
• Acta Horticulturae Sinica. 2001, 28(4): 373-373.
• Abstract ( 1284 ) HTML ( 951 ) PDF (197KB) ( 951 ) 　　　
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• The New Red Apple Cultivar‘Guo Hong’
• Feng Jianzhong;Yan Xinmin;Wang Xiange;and Li Lianghan
• Acta Horticulturae Sinica. 2001, 28(4): 374-374.
• Abstract ( 1196 ) HTML ( 791 ) PDF (63KB) ( 791 ) 　　　
• The red apple cultivar Guo Hong is the progeny of the hybrid of Ralls and Staking. Delicious back crossed with Staking. Delicious. It has a deep red conical fruit, the average fruit weight is 257 g, the largest fruit weight is 420 g , the soluble solid content is 15. 6%. Its fruits ripen in late October, and they have a long suitable harvest time from late September to late October.
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• ‘Xiangfei ’—A New Early Ripening Grape Variety
• Xu Haiying;Zhang Guojun;Yan Ailing;and Liu Jun
• Acta Horticulturae Sinica. 2001, 28(4): 375-375.
• Abstract ( 1648 ) HTML ( 914 ) PDF (63KB) ( 914 ) 　　　
• ‘Xiangfei’ is a hybrid selected from 􀀂Cardinal 73-7-6 (Muscat Hamburg ! Pearl of Csaba) . The berries are large, nearly circular, the mean berry mass is 7. 58 g, The flesh is hardy, crisp and tender and it has heavy rose aroma. Soluble solid concentration averages 14. 25%, with a mean titratable acidity of 0. 58%. The skin is greenish yellow. 􀀂Xiangfei maturates early in the season, it completely maturates in early-August in Beijing .
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• A New Late-ripening White-flesh Sweet Nectarine Variety- ‘Qinguang 2’
• Acta Horticulturae Sinica. 2001, 28(4): 376-376.
• Abstract ( 1309 ) HTML ( 848 ) PDF (161KB) ( 848 ) 　　　
• ‘Qinguang 2’nectarine ( Pranus persica var. Nectarine maxim ) is a late􀀁ripening hybird selected from ‘Jingyu’‘Xingjin youtao’. Its average fruit weight is 196 g, The heaviest is 265 g, More than three􀀁fourth
  part of the fruit surface is fresh red color. The very vigorous plant provides white freshed, crispy and sweet fruit with long􀀁storage life at room temperature. It ripens at the beginning of August in Shaanx i area and yields 37. 3 t/ hm².
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• A New Jujube Cultivar-'Yuanling 1'
• Wang Bin;Guo Yuxin;Zhou Guangfang;Shan Gonghua;and Gao Li
• Acta Horticulturae Sinica. 2001, 28(4): 377-377.
• Abstract ( 1300 ) HTML ( 782 ) PDF (160KB) ( 782 ) 　　　
• ‘Yuanling 1’was selected as a high nutritious clone applicable to drying and processing from Yuanling cultivar. The fruit size is big and uniform with the average fruit weight of 16- 18 g and the soluble solids content of
  33%, the dried fruit is high quality and drying rate of fruit is about 60%. It is early bearing, its yield is 30% higher than Yuanling , and fruit drop before harvest is less. The critical low temperature of fruit set is 22- 23℃at blooming.
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• A Disease􀀁resistant F₁ Hybrid of Chinese Cabbage (Brassica campestris ssp.Pekinensis)‘Tianzheng Qiubai 1’
• Wang Cuihua;He Qiwei;and Mou Jinhua
• Acta Horticulturae Sinica. 2001, 28(4): 378-378.
• Abstract ( 1528 ) HTML ( 843 ) PDF (65KB) ( 843 ) 　　　
• ‘Tianzheng Qiubai 1’is a mid􀀁late F₁ hybrid, The female parent‘Xinfu 1042’ was derived from ‘Fushan 2 Baotou’. The male parent‘An 1043’ was derived from‘Anyang 2 Baotou’by selfing, separation and selection. They are all self􀀁incompatible lines. It takes 80 days from sowing to maturity. The color of leaves is light green and the petiole is white. The head is top􀀁shaped. Net ratio 75%, net weight 5. 1 kg, Average yield is 117. 5 t/ hm². This variety is highly resistant to Turnip mosaic virus, downy mildew and soft rot.
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• A New Cucumber Hybrid for Late Autumn Season‘Zhongnong 10’
• Gu Xingfang;Fang Xiujuan;Zhang Tianming;and Zhang Chunzhen
• Acta Horticulturae Sinica. 2001, 28(4): 379-379.
• Abstract ( 1199 ) HTML ( 831 ) PDF (159KB) ( 831 ) 　　　
• ‘Zhongnong 10’ is a newly bred cucumber hybrid by crossing the disease􀀁resistant gynoecious inbred line 94261G with monoecious inbred line 273. Its vine growth is vigorous. It is resistant to downy mildew, powdery mildew and fusarium wilt, and tolerant to stress. In addition, it has high yield. It is suitable for open field cultivation in autumn, and also can be grown in protected cultivation in late autumn.
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• A New Special Pepper Variety for Greenhouse and Plastic House‘Huaijiao’
• Zhu Shidong;Wang Jiachun;Song Kaiying;and Li Feng
• Acta Horticulturae Sinica. 2001, 28(4): 380-380.
• Abstract ( 1197 ) HTML ( 776 ) PDF (160KB) ( 776 ) 　　　
• ‘Huaijiao 3’, a new special pepper variety for greenhouse and plastic house, had been selected by using early maturing pepper self􀀁line and sweet pepper as parents. Very early maturity and large fruit are its most striking characteristics besides the good quality, high yield, high resistance, good market and wide adaptability. The average fruit weight is 35- 55 g. It is suitable for growing in Huaihe and Yangtze river valley.
  
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• A New Hybrid Variety of Spinach‘Huabo 3’
• Xu Yuejin;Xiang Changping;Yan Rulai;and Yang Xianghui
• Acta Horticulturae Sinica. 2001, 28(4): 381-381.
• Abstract ( 1259 ) HTML ( 820 ) PDF (65KB) ( 820 ) 　　　
• ‘Huabo 3’ is a F1 hybrid between strong female line‘9408’ and inbred line‘Qian 1’. It has heat tolerance, high yield, early maturity and resistance to virus, downy mildew of spinach, and it was extended about
  10 000 hm² in 12 provinces. The yield was 25. 5 t/ hm².
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