摘要
本文采用群体遗传学方法 ,研究分析了 6172份中国野生大豆资源的数量、遗传多样性指数( Shannon指数 )、 12个性状的综合变异系数及其地理分布。结果表明 :142～ 4 7°N× 12 2～ 12 7°E的东北中南部野生大豆资源分布极广、遗传多样性丰富、综合变异系数高 ;2 34～ 35°N× 113～ 115°E、 38～ 39°N× 113～ 115°E和 34～ 35°N× 10 7～ 10 9°E的黄河中下游和秦岭山区野生大豆次之 ;3 2 6～ 2 7°N× 119～ 12 1°E的东南沿海地区野生大豆遗传多样性、综合变异系数均很高 ,但分布较少。根据遗传多样性、综合变异系数及资源的地理分布 ,提出了中国野生大豆遗传多样性中心及多样性扩散 ,据此推测了中国野生大豆的起源模式 ,为栽培大豆的起源提供了一个重要依据。
The genetic diversity, comprehensive coefficient of variability of 12 traits and the geographical distribution of 6172 accessions collected from China were studied by quantitative genetics in this paper. It showed that: ① Annual wild soybean in 42~47°N×122~127°E plots are the richest in accessions, genetic diversity and comprehensive coefficient of variability. ② Annual wild soybean in 34~35°N×113~115°E, 38~39°N×113~115°E and 34~35°N×107~109°E of Yellow River Valley and Qinling Mountains take second place. ③ The genetic diversity and comprehensive coefficient of variability of annual wild soybean were higher in 26~27°N×119~121°E of southeast coast, but the distribution of accessions was less. The genetic diversity centers, spread modes of genetic diversity were put forward according to the distribution of accessions, genetic diversity and comprehensive coefficient of variability. From this the origin mode of wild soybean in China was inferred. The results provided an evidence for origin of cultivated soybean in China.
出处
《作物学报》
CAS
CSCD
北大核心
2000年第5期521-527,共7页
Acta Agronomica Sinica
基金
国家自然科学基金资助项目
“973”资助项目共同资助(项目批号:39730330和39670448G，1998010200)
关键词
野生大豆
遗传多样性
富集中心
起源
Genetic diversity centers
Origin
Annual wild soybean
