大明绿系选后代遗传多样性与高产特征分析

Analysis of Genetic Diversity and High Yield Characteristics of the Selected Offsprings from Mung Bean Cultivar Daminglv

以内蒙古中东部地区61份绿豆品种大明绿系选后代为研究材料,通过对农艺性状的多样性及通径分析,明确了后代品系遗传类型及高产群体性状特征。结果表明,大明绿后代品系间性状差异显著,单株荚数变异系数最大为31.61%,其次为单株粒重28.05%,遗传多样性较丰富,多样性指数为单株荚数2.02,每荚粒数2.01,百粒重1.89,单株粒重1.96。后代品系主要有6种类型,各性状对单株粒重影响大小依次为：单株荚数〉每荚粒数〉百粒重〉节数〉株高。高产类型品系主要特征指标为单株粒重超过15 g,单株荚数超过30荚,每荚粒数8～10粒,株高48～60 cm,节数9～10节,百粒重可根据不同需求制定标准。

In this study,61 system breedings offspring from cultivar ‘Daminglv ＇in eastern Inner Mongolia were tested as materials through the diversity and path analysis of agronomic traits,to identify the population genetic types and characters of high yield offspring.The result showed that the differences were significant in offspring strains traits.The numbers of pods per plant had largest variation coefficient of 31.61%,followed by the grain weight per plant with 28.05%.The genetic diversity of mung bean was rich,the diversity index of pod number was2.02,number of seeds per pod was 2.01,hundred-grain weight was 1.89,the grain weight per plant was 1.96.There were six main types of offspring strains.The order of affect on the the grain weight per plant was：pod number per plant 〉seeds per pod 〉hundred-grain weight 〉stem section number〉 plant height.The main characteristics of high-yielding strains indexes was more than 15 g in grain weight per plant,pod number over 30 pods,per pod 8-10 seeds,height 48-60 cm,9-10 sessions,hundred-grain weight could set standards according to different needs.