唐山红小豆地方品种资源形态多样性研究

The morphological diversity of adzuki bean landraces from Tangshan

以66份唐山红小豆为材料,研究唐山红小豆地方品种资源的形态多样性,结果表明:①唐山红小豆地方品种生育期较长,为中晚熟品种,株型高大、分枝较多、单株结荚数多、百粒重较大,产量性状较好;②各性状变异系数的大小顺序为:主茎分枝数>单株结荚数>单株粒重>主茎节数>营养生长期>生殖生长期>百粒重>单荚粒数>全生育期>株高>荚长;③唐山红小豆地方品种平均多样性指数为1.959,具有较丰富的形态多样性;④依据调查性状数据进行系统聚类,以欧式平均距离0.674为截距,可将66份唐山红小豆划分为4个类群,大部分(46份)品种聚于第Ⅰ组群,其他品种分属于另3个组群,分组与地理来源没有明显的关系。

The diversity study of 66 adzuki bean landraces from Tangshan indicates that,①adzuki bean landraces from Tangshan usually mature late,which feature long growth period,high height,many branches,many pods per plant,big 100-seed weight and satisfying yield;②the different morphological traits from the most variant to the least are number of branches in main stem,pods per plant,seed weight per plant,number of burls,days of vegetative growth,days of reproductive stage,100-seed weight,days of growth period,plant height and pod length;③the average of genetic diversity index is 1.959;④those accessions are separated into 4 groups at the euclidean distance value 0.674 according to the dendrogram.Most of landraces（46 accessions） were clustered into group Ⅰwhile the rest were classified into other 3 groups.However,there is no link between groups and geographic origin.