春大豆性状的多元遗传分析及应用分析

应用多元遗传分析的方法对24个春大豆的株高、主茎节数、单株荚数、单株粒数、单株粒重、单荚粒数、十株生物产量、百粒重、生育前期(出苗到开花的天数)、生育后期(开花到成熟的天数)、全生育期和收获株数等12种农艺性状进行主成分分析,看出影响大豆产量的主要因素是单株粒重、单株粒数、主茎节数、单荚粒数及生育前期,为品种(系)应用及分类和亲本选配提供理论依据.根据其第一、二主成分值,将所有品种(系)分为五大类,评述类内各品种(系)的主要特征,并针对不同生育期,结合大田生产进行应用分析.

Multigenetic and Applied analyses of Spring soybean characters

the principal components analyses of twelve types of agronomic characters including plant height,number of branches,number of pods perplant,number of seeds per plant,single plant yield,number of seeds per pod,ten-plant biomass,seed size,date of flowiring,date of full-ripening,date of maturity,mumber of available plants and so on,are made for twenty-four clusters of spring soybean in shi he zi city.The studies show that the main factors affecting soybean yield are single plant yield,number of seeds per plant,number of branches,number of seeds per pod,date of flowering and so on,theoretical bases are preseuted for cultiars use,dassification and parent selected mating,According to the first and the second principal components date,these soybean varieties are mainly grouped into five dusters.Main characters of each cultivar in one duster are recommended.Combined with field production, applied analyses are performed for different growth periods.