Zhao Z C, Zhou M D, Luo D Z, Hou X, Wang Z R, Shen G K, Li F L, Cao J X
Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
Yi Chuan Xue Bao. 2000;27(12):1084-93.
In the present paper is stated the accomplishment of the studies of 17 populations of cultivated Fagopyrum tataricum (L.) Gaertn. from the counties of Yuexi and Ganluo in North Liangshan Autonomous Prefecture of Yi Nationality, Sichuan Province, China by means of starch gel electrophoresis and cluster analysis of agrobiology features. Seven enzymes, and 15 loci were assessed. The result shows that the genetic diversity of F. tataricum within population is higher than in the South Prefecture and in species F. esculentum from other areas. The A, P, Ho and He are 1.9, 52.1%, 0.190 and 0.262 respectively. The FST is 0.199 which is close to the average level of wild plants. A conservation strategy of the genetic resource of F. tataricum is suggested. Two populations of local variety "Youchiqiao" have the richest genetic diversity, P = 60.0%, Ho = 0.260 and 0.301 and they should be protected particularly. Two populations of local variety "Xiaomiqiao" with higher genetic diversity, as well as three populations of local varieties of "Qiukuqiao", "Equkuqiao" and "Geluokuqiao" with special genetic position should be protected too.
本文阐述了通过淀粉凝胶电泳和农业生物学特征聚类分析，对来自中国四川省凉山彝族自治州北部越西县和甘洛县的17个栽培苦荞麦（鞑靼荞麦）种群进行研究的成果。评估了7种酶和15个位点。结果表明，苦荞麦种群内的遗传多样性高于该自治州南部，也高于其他地区的栽培荞麦（甜荞）物种。等位基因数（A）、多态位点百分率（P）、观察杂合度（Ho）和期望杂合度（He）分别为1.9、52.1%、0.190和0.262。固定指数（FST）为0.199，接近野生植物的平均水平。提出了苦荞麦遗传资源的保护策略。两个地方品种“油翅荞”种群具有最丰富的遗传多样性，P = 60.0%，Ho = 0.260和0.301，应特别加以保护。两个遗传多样性较高的地方品种“小米荞”种群，以及三个具有特殊遗传地位的地方品种“秋苦荞”、“额苦荞”和“格洛苦荞”种群也应受到保护。
