| 三倍体短葶飞蓬的发现及其在育种上的意义 |
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| 引用本文： | 李鹂,党承林,黄瑞复. 三倍体短葶飞蓬的发现及其在育种上的意义[J]. 云南植物研究, 2007, 29(1): 38-42 |
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| 作者姓名： | 李鹂 党承林 黄瑞复 |
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| 作者单位： | 1. 吉首大学资源环境学院,湖南,吉首,416000;云南大学生态学与地植物学研究所,云南,昆明,650091
2. 云南大学生态学与地植物学研究所,云南,昆明,650091 |
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| 摘 要： | 对云南省野生居群的短葶飞蓬有丝分裂的细胞学特征进行观察研究。在云南省大理苍山、腾冲杨家坪的二倍体野生居群中,发现有三倍体个体的存在。苍山居群的两种核型分别为2n=2x=18=4m 10sm 4st,2n=3x=27=6m 12sm 9st;杨家坪居群的两种核型分别为2n=2x=18=6m 10sm 2st,2n=3x=27=3m 15sm 9st。通过对其生物学特性及表型的分析,认为短葶飞蓬可以采取多倍体育种方式获得更优良的品种。
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| 关 键 词： | 短葶飞蓬 核型 三倍体 育种 |
| 文章编号： | 0253-2700(2007)01-038-05 |
| 修稿时间： | 2006-03-08 |
Discovery of Triploid Erigeron breviscapus (Compositae) and Its Potential for Breeding |
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| LI Li,DANG Cheng-Lin,HUANG Rui-Fu. Discovery of Triploid Erigeron breviscapus (Compositae) and Its Potential for Breeding[J]. Acta Botanica Yunnanica, 2007, 29(1): 38-42 |
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| Authors: | LI Li DANG Cheng-Lin HUANG Rui-Fu |
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| Abstract: | The chromosomes number and karyotypes for an important medicinal plant,Erigeron breviscapus(Vant.)Hand.-Mazz.,in wild populations from Yunnan were reported in this paper.Two kind of ploidy levels were observed within two populations of the species.(1)Cangshan population:the karyotype formula of the diploid type is 2n=2x=18=4m 10sm 4st and 2n=3x=27=6m 12sm 9st for triploid,(2)Yangjiaping population:the karyotype formula of the diploid type is 2n=2x=18=6m 10sm 2st and 2n=3x=27=3m 15sm 9st for triploid.The triploid type of E.breviscapus was discovered for the first time.Morphological characteristics of the triploid individuals suggest that E.breviscapus has a potential for fostering a better breed. |
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| Keywords: | Erigeron breviscapus Karyotype Triploid Breeding |
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