不同来源大豆种质资源在长沙地区的引种表现OA

To provide a theoretical basis for selecting soybean varieties in the Changsha area,the agronomic traits and yield perfor-mance of introduced soybean germplasm resources were evaluated.Using a randomized block design,38 soybean germplasm resources were observed in the field,with phenological periods,agronomic traits,and yield indicators measured.Comprehensive evaluations were conducted using correlation analysis,principal component analysis,and membership function method.The results showed that the growth period of the tested varieties ranged from 85 to 124 days,predominantly consisting of late－maturing and early－maturing types.Agronomic traits varied widely,with significant differences in plant height,stem diameter,and grain mass per plant.Correlation analy-sis revealed that the number of effective pods per plant and the number of grains per plant were highly significantly positively correlat-ed with grain mass per plant,while a negative correlation was observed between 100－grain weight and grain number.Principal com-ponent analysis extracted five principal components,the cumulative component value was 87.583%.The main traits affecting yield in-cluded the number of effective pods per plant,grains per plant,two－grain pods,and three－grain pods.Membership function analysis yielded comprehensive evaluation values(D),with varieties'Nannong 47','Longhe Daheidou','Longhe Dazihuang',and'Youdou 6019'exhibiting higher D values of 0.656,0.646,0.640,and 0.611,respectively,indicating their superior comprehensive traits.Yield analysis showed that varieties'Zheng 1311','Nannong 60','Wansu 112','Youdou 6019',and'Nannong 47'ranked in the top five in terms of yield,all exceeding 4 000 kg·hm－2.Studies suggest that the variety'Youdou 6019'demonstrates outstanding performance in both comprehensive trait evaluation and actual yield,with its high－yield characteristics showing partial synergy and differences in re-lation to the evaluation results of agronomic traits.In summary,'Zheng 1311','Nanong 60','Wansu 112','Youdou 6019',and'Nanong 47'are recommended as preferred introduction materials with high－yield potential for the Changsha region.