【摘要】 引进甜荞（Fagopyrum esculentum Moench.）种质资源77份，进行农艺性状的田间鉴定，以期筛选出适宜内蒙古呼包地区种植的优异种质资源。结果表明，遗传性变异度以产量和单株粒重最大，变异系数分别为37.1%、38.5%，一级分枝数、单株粒数、第一侧枝长、茎壁厚、株高的变异系数较大，分别为36.6%、33.9%、32.4%、29.4%、21.9%，表明这些性状有丰富的遗传变异；通过对12个农艺性状的聚类分析表明，77份甜荞品种可分为3类，包括矮秆型21份、大粒高产型34份、高秆抗倒型22份；与产量显著相关的性状为单株粒重、千粒重、单株粒数（P<0.01）。综合来看，筛选出适于内蒙古呼包地区种植的兼具矮秆、高产、抗倒性状的优异甜荞种质资源9份。更多还原

【Abstract】 77 germplasm resources of sweet buckwheat(Fagopyrum esculentum Moench.)were introduced for field identification of agronomic characters,in order to screen excellent germplasm resources suitable for planting in the Hohhot-Baotou area of Inner Mongolia. The results showed that the yield and grain weight per plant had the highest genetic variability,with variation coefficients of 37.1%and 38.5%,respectively. The variation coefficients of the first branch number,grain number per plant,first lateral branch length,stem wall thickness and plant height were relatively high,with variation coefficients of 36.6%,33.9%,32.4%,29.4% and 21.9% respectively. It indicated that these traits had abundant genetic variability. Cluster analysis of 12 agronomic traits showed that 77 sweet buckwheat germplasm resources could be divided into 3 categories,including 21 short-stalk varieties,34 large-grain and high-yield varieties and 22 high-stalk and lodging-resistant varieties. The traits significantly related to the yield of buckwheat were grain weight per plant,1 000-grain weight and grain number per plant(P<0.01). Nine excellent germplasm resources of sweet buckwheat with dwarf,high yield and lodging resistance were screened out,which were suitable for the climatic conditions in the Hohhot-Baotou area of Inner Mongolia.更多还原