为探索厚荚相思不同家系间种子性状的变异规律及与其子代苗期生长性状的关系.对厚荚相思种子园中不同家系种子的主要性状进行了测定及育苗试验.结果表明:21个不同家系间种子各性状差异均达到极显著水平.变异系数从大到小依次为发芽率>种脐长>千粒重>种形系数>种子长>种子宽.家系间的苗高与地径生长均存在着显著差异.广义遗传力分别为0.614和0.844.这些差异主要受遗传因素控制.种子各性状与苗木生长的相关未达显著水平.而种子各性状间也不存在显著相关性,表明厚荚相思苗木早期生长与种子大小和重量关系不大.

Provenance trails including 21 provenances,introduced from Guangxi,Yunnan,Guangdong,Hunan,Jiangxi and Guizhou provinces,was used to study geographic variation pattern of seed character and seedling growth.Seed and seedling characters including seed length,seed width,100-grain weight et al were analyzed.The variance analysis result showed that differences between seed and seedling characters from 21 provenances all reached the significant or extremely significant level.The genetic variation coefficients of seed length,seed width,100-grain weight,seedling height were 22.43%,23.32%,75.33%,33.85% and the broad-sense heritability were 0.986,0.984,0.999 and 0.949.Seed and seedling characters had high heredity ability.Correlation analysis of result suggested that negative correlation was highly significant between One-hundred-grain Weight with rainfall.Between the quantity of leaves and annual average temperature,between the quantity of leaves and sunshine duration both showed significant negative correlation.Clustering analysis result showed that 8 provenances including Liping in Guizhou province,Zhaoping in Guangxi province,et al,were super,their average phenotype gains and genetic gains of seedling height were 37.41% and 35.50%.The volume output of the super prevenances was significant.