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为明确黄麻(Corchorus L.)种质资源的遗传多样性,采用SRAP分子标记方法,对来自13个国家的两个黄麻栽培种及野生种共96份黄麻种质资源进行了分析。研究结果如下:(1)供试黄麻种质资源之间的遗传距离在0.0169至0.9667之间,变幅较大,其中近缘野生种与其他种质的遗传距离最大,基本在0.8以上;圆果栽培黄麻与其他种质的遗传距离最小,平均<0.5。(2)当在聚类图上遗传距离为0.53处划切割线L1时,96份黄麻种质资源被分为两个大类群(Ⅰ、Ⅱ)、一个小类群(Ⅲ)和5个独立个类。(3)当在遗传距离为0.33处作切割线L2时,各大类群被分为不同的亚类群,并表现出按地域聚类的趋势。(4)供试黄麻种质资源基于SRAP分子标记的聚类与形态学上的表现并不完全一致。
In order to clarify the genetic diversity of germplasm resources of Corchorus L., 96 jute germplasm resources from two jute cultivars and wild species from 13 countries were analyzed by SRAP molecular marker method. The results are as follows: (1) The genetic distance between the germplasm resources of jute germplasm tested ranged from 0.0169 to 0.9667, with a larger amplitude. The genetic distance between the wild relatives of germplasm and other germplasms was the highest at 0.8, Fruit cultivated jute and other germplasm genetic distance minimum, with an average <0.5. (2) 96 jute germplasm resources were divided into two major groups (Ⅰ, Ⅱ), one small group (Ⅲ) and five independent class. (3) When the cutting line L2 was made at the genetic distance of 0.33, the major groups were divided into different sub-groups, and showed the trend of clustering by region. (4) Jute germplasm resources based on SRAP molecular markers clustering and morphological performance is not exactly the same.