中国柠条锦鸡儿资源表型多样性研究

Study on Phenotypic Diversity of Caragana korshinskii

应用居群生物学原理及方法,对分布在中国不同地区的11个柠条锦鸡儿(Caragana korshinskiiKom.)天然居群进行取样,分析了叶、荚果、种子等11个指标的表型多样性。结果表明,柠条锦鸡儿居群在形态上具有丰富的多样性(H′=2.019 0)。在遗传多样性的分布上,居群间虽存在一定程度的遗传变异,但遗传多样性主要集中在居群内部,这种特点是由柠条锦鸡儿异花、虫媒传粉的外繁育系统所决定。我国柠条锦鸡儿居群在各个分布区的遗传多样性程度也不同,从大到小依次为宁夏地区(H′=1.706 8)>内蒙古地区(H′=1.631 6)>陕西地区(H′=1.624 7)>山西地区(H′=1.602 5)。

According to population biology theories, phenotypic diversity of eleven populations of skii Kom. in China were selected and investigated. The results showed that there was an abundant p （H＇ = 2.019 0） among these tfibution pattern of phenotypic lations （19.37%） which was Caragana korshinhenotypic diversity populations in 11 morphological characters such as leaves, pods and seeds. As for the disdiversity, the genetic variation among population（80.63 % ） was greater than within popudecided by its outcrossing-insect breeding system. Phenotypic diversity of this species distributed over every region was different, whose turn was Ningxia region （H＇ = 1.706 8） 〉 Inner Mongolia region （H＇ = 1.631 6） 〉 Shaanxi region 〉 （H＇ = 1.624 7） 〉 Shanxi region（H＇ = 1.602 5）.