| 中国树莓属8个种染色体数目与核型 |
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| 引用本文： | 林盛华,张冰冰.中国树莓属8个种染色体数目与核型[J].园艺学报,1994,21(4):313-319. |
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| 作者姓名： | 林盛华 张冰冰 |
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| 作者单位： | 中国农业科学院果树研究所，吉林省农业科学院果树研究所 |
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| 基金项目： | 中国农业科学院院长基金 |
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| 摘 要： | 采用“去壁低渗法”对我国树莓属８个种１８个类型的染色体数目和１２个类型的核型进行了研究。发现我国牛迭肚、绿叶悬勾子、库叶悬勾子有二倍体２ｎ＝２ｘ＝１４和四倍体２ｎ＝４ｘ＝２８类型；茅莓为四倍体２ｎ＝４ｘ＝２８；覆盆子有二倍体２ｎ＝２ｘ＝１４和三倍体２ｎ＝３ｘ＝２１类型；黄树莓、黑树莓、美洲黑莓均为二倍体２ｎ＝２ｘ＝１４。核型结果表明，树莓属染色体均小形，由中部着丝点染色体和亚中部着丝点染色体组成。
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| 关 键 词： | 树莓属 染色体 数目 多倍体 核型 黑莓 |
Chromosome Numbers and Karyotypes of 8 Species Rubus in China |
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| Lin Shenghua, Zhang Bingbing,Fang Chengquan, Lin Fengqi, and Pu Fushen.Chromosome Numbers and Karyotypes of 8 Species Rubus in China[J].Acta Horticulturae Sinica,1994,21(4):313-319. |
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| Authors: | Lin Shenghua Zhang Bingbing Fang Chengquan Lin Fengqi and Pu Fushen |
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| Abstract: | Chromosome numbers of 18 forms, 8 species and karyotypes of 12 formsof Rubus in China were studied with the wall degradation hypotonic method. It was foundthat Rubus crataegifolius Bge., R. komarovii Nakai, and R. sachalinensis Levl. havediploid (2n=2x=14) and tetraploid (2n=4x=28) forms; R. parvifolius L. is tetraploid (2n=4x=28); R. idaeus L. has diploid (2n=2x=14) and triploid (2n=3x=21) forms; R. xanthocarpus Bureau et Franch., R. occidentalis L., and R. allegheniensis Porter. are all diploid (2n=2x=14). Karyotype results indicate that all the chromosomes of Rubus are small in size. The karyotypes are composed of metacentricchromosomes and submetacentric chromosomes and belong to"1A" and "2ZA" types.Karyotypic differences exist among Rubus. Triploid and tetraploid forms are moreevolutional than diploid forms in the same species. |
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| Keywords: | Rubus Chromosome number Polyploid Karyotype |
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