不同来源甜高粱种质资源的表型遗传多样性分析

通过对主要农艺性状的方差分析及聚类分析,对194份不同来源的甜高粱种质资源进行了表型性状的遗传多样性分析。结果表明,不同来源品种间的性状差异较大,与中国品种相比,国外品种具有植株高大、生物产量高及含糖量高等优异性状,可用于国内资源的种质创新及品种改良。遗传距离为0.66时将所有资源划分为6类,各类群主要按农艺性状进行了划分。研究结果将为杂交育种的亲本选择提供理论参考。

Genetic diversity analysis on sweet sorghum germplasm resources of different origins based on agronomical traits Genetic diversity analysis of sweet sorghum germplasm resources from different origins using agronomical traits Genetic diversity analysis of sweet sorghum germplasm resources from different origins using agronomical traits

Genetic diversity of 194 sweet sorghum germplasm resources with different origins was analyzed based on agronomical traits using analysis for agronomical variance and cluster analysis. It is indicated that variation of agronomical traits was obvious among germplasm resources of different origins. Exotic germplasm resources could be used for germplasm enhancement because of their elite characters such as high plant height, high biomass and high sugar content compared to domestic ones. All the germplasm resources were clustered into 6 groups at the genetic distance of 0.66 mainly according to their agronomical traits. Information of this study can be used to select parent lines for development of segregating populations and hybrid breeding of sweet sorghum.