西南地区10种野生树莓的染色体数与核型研究

园艺学报 ›› 2008, Vol. 35 ›› Issue (3): 343-350.

西南地区10种野生树莓的染色体数与核型研究

王小蓉, 汤浩茹 ^* , 付华清, 罗　娅, 邓群仙, 董晓莉, 李　玲, 段　娟

(四川农业大学林学园艺学院, 四川雅安 625014)

收稿日期:2007-10-24 修回日期:2008-01-15 出版日期:2008-03-25 发布日期:2008-03-25
通讯作者: 汤浩茹

Chromosome Numbers and Karyotypes of 10 Wild Bramble ( Rubus L . ) Spec ies from Southwest of China

WANG Xiao-rong, TANG Hao-ru^* , FU Hua-qing, LUO Ya, DENGQun-xian, DONG Xiao-li, LI Ling, and DUAN Juan

(College of Forestry and Horticulture, Sichuan Agricultural University, Yapan, Sichuan 625014, China)

Received:2007-10-24 Revised:2008-01-15 Online:2008-03-25 Published:2008-03-25
Contact: TANG Hao-ru

摘要/Abstract

摘要：

采用常规根尖压片法对西南地区的10种(变种) 野生树莓染色体数和核型进行研究。结果
表明, 除寒莓Rubus buergeri 2n = 8x = 56, 光滑高粱泡R. lam bertianus var. glaber、大乌泡R. m ultibracteatus 和川莓R. setchuenensis 2n = 4x = 28以及茅莓R. parvifolius 2n = 2x = 14、2n = 3x = 21和2n = 4x = 28与2n = 2x = 14外, 其余5种(变种) 的染色体数均为2n = 2x = 14; 核型结果表明除栽秧泡R. ellipticus var. obcordatus核型分类为2A外, 其余均为1A类型, 它们的核型公式是: 红泡刺藤R. niveus, 2n = 2x = 14 = 14m; 栽秧泡R. ellipticus var. obcordatus, 2n = 2x = 14 = 12m ( 2SAT) + 2 sm ( 2SAT) ; 茅莓, 2n = 2x = 14 = 14m (2SAT) 、2n = 3x = 21 = 21m ( 3SAT) 和2n = 4x = 28 = 24m + 4 sm ( 4SAT) 与2n = 2x = 14 = 12m + 2 sm (2SAT) ; 秀丽莓R. am abilis, 2n = 2x = 14 = 12m ( 2SAT) + 2 sm; 插田泡R. coreanus, 2n = 2x = 14 = 14m (2SAT) 和2n = 2x = 14 = 14m; 山莓R. corchorifolius, 2n = 2x = 14 = 14m; 光滑高粱泡, 2n = 4x = 28 = 24m + 4 sm; 大乌泡, 2n = 4x = 28 = 24m + 4 sm; 川莓, 2n = 4x=28=28m; 寒莓, 2n = 8x = 56 = 56m。栽秧泡和秀丽莓2个种(变种) 的染色体数、茅莓存在二倍体与四倍体的混倍体类型以及红泡刺藤、栽秧泡、秀丽莓、山莓、光滑高粱泡、大乌泡、川莓和寒莓8个种(变种) 的核型为首次报道。

关键词: 树莓, 染色体, 混倍体, 核型

Abstract: Chromosome numbers and karyotypes of 10 wild bramble (Rubus L. ) species ( varieties) from Southwest of China had been studied by using common root-tip squashing method. The results showed that they were all diploidy with 2n = 2x = 14, but R. buergeri with 2n = 8x = 56, R. lambertianus var. glaber,
R. multibracteatus and R. setchuenensis with 2n = 4x = 28, and R. parvifolius with aploidy series of 2n = 2x = 14, 2n = 3x = 21 and the mixoploid of 2n = 4x = 28 and 2n = 2x = 14. The results showed also that all the karyotypes belonged to “1A”type, but“2A”type in R. ellipticus var. obcordatus, their karyotype formulae were as follows: R. niveus, 2n = 2x = 14 = 14m; R. ellipticus var. obcordatus, 2n = 2x = 14 = 12m (2SAT) + 2 sm (2SAT) ; R. parvifolius, 2n = 2x = 14 = 14m (2SAT) , 2n = 3x = 21 = 21m (3SAT) , 2n = 4x = 28 = 24m + 4 sm (4SAT) and 2n = 2x = 14 = 12m + 2 sm (2SAT) ; R. am abilis, 2n = 2x = 14 = 12m ( 2SAT) + 2 sm; R. coreanus, 2n = 2x = 14 = 14m (2SAT) and 2n = 2x = 14 = 14m; R. corchorifolius, 2n = 2x = 14 = 14m; R. lambertianus var. glaber, 2n = 4x = 28 = 24m + 4 sm; R. multibracteatus, 2n = 4x = 28 = 24m + 4 sm; R.setchuenensis, 2n = 4x = 28 = 28m; R. buergeri, 2n = 8x = 56 = 56m. Among them, it was reported firstly that the chromosome numbers of two species R. ellipticus var. obcordatus and R. amabilis, the mixoploid forms of 2x and 4x in R. parvifolius and karyotypes of the 8 species R. niveus, R. ellipticus var. obcordatus, R. amabilis, R. corchorifolius, R. lambertianus var. glaber, R. multibracteatus, R. setchuenensis and R. buergeri.

Key words: bramble, Rubus L., chromosome, mixoploid, karyotype

中图分类号:

S 663.2

王小蓉;汤浩茹 ;付华清;罗　娅;邓群仙;董晓莉;李　玲;段　娟 . 西南地区10种野生树莓的染色体数与核型研究[J]. 园艺学报, 2008, 35(3): 343-350.

WANG Xiao-rong;TANG Hao-ru;FU Hua-qing;LUO Ya;DENGQun-xian;DONG Xiao-li;LI Ling;and DUAN Juan. Chromosome Numbers and Karyotypes of 10 Wild Bramble ( Rubus L . ) Spec ies from Southwest of China [J]. ACTA HORTICULTURAE SINICA, 2008, 35(3): 343-350.

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