Genetic Diversity Analysis of 149 Spring Wheat Germplasm Resources
To select high-yield and high-quality new germplasm resources of spring wheat and enrich the genetic diversity of spring wheat germplasm resources on the Loess Plateau dry farming and rain-fed areas,149 spring wheat germplasm resources were studied.Their genetic diversity was examined through agronomic and quality traits,correlations among traits were analyzed,and clustering analysis was used to select high-yield and high-quality spring wheat germplasm resources.Results showed that the diversity index of 10 quality traits(grain ash content,moisture content,protein content,starch content,falling number,hardness,bulk density,wet gluten content,weakening degree,sedimentation value)of the 149 spring wheat germplasm resources ranged from 1.77 to 2.03,with an average of 1.924,and the diversity index of 5 agronomic traits(number of spikelets,spike length,plant height,number of spikes per plant,yield per plant)ranged from 1.84 to 2.04,with an average of 1.958.The tested spring wheat germplasm resources exhibited rich diversity in traits and variation types.There was a highly significant positive correlation between the number of spikes per plant and yield per plant,a highly significant negative correlation between yield per plant and protein content,and negative correlations with starch content,wet gluten content,and falling number.Through clustering analysis,4 spring wheat germplasm resources with excellent traits and rich variation types were selected:Dingxi 53,10102-1,Mace,and EmuRock.
Spring wheatGermplasm resourceQuality traitGenetic diversity indexCluster analysis
国家科技期刊平台
NSTL
万方数据
