Evaluation of Inland Superior Cotton Resources and Their Application in Xinjiang Cotton Breeding
The aim is to comprehensively utilize inland cotton resources,solve the problems involved in Xinjiang cotton breeding,such as narrow genetic basis and serious homogenization,and cultivate new cotton varieties with high and stable yield that are more suitable for whole-process mechanization in Xinjiang.Using 160 inland cotton resources as materials,the identification of biological characteristics was conducted in Korla,Xinjiang.The parental selection and systematic selection of cotton breeding in Xinjiang were guided through correlation and cluster analysis.The yield potential and stability of progeny strains were comprehensively evaluated by the mean of GGE biplot.The results showed that there were regional differences in the cultivation of inland cotton resources in Xinjiang.The cotton resources with a dimension of origin similar to that of the Xinjiang pilot showed excellent adaptability.Its grey clustering evaluation got a high score.78 superior resources showed rich genetic variation.These resources were divided into four groups at 11.486 of Euclidean distance.The third group mainly composed of cotton resources from the Yellow River basin showed the best performance.Therefore,the third group was considered the characteristic group for the utilization of inland cotton resources in Xinjiang.The results of the principal component analysis indicated that the first principal component had the largest characteristic value and the highest variance contribution rate.As a comprehensive factor related to yield potential,it can be used as the basis for comprehensively evaluating the quality of cotton resources.Finally,the yield potential and stability of 16 progeny strains with inland superior resources as parents were evaluated according to the GGE biplot,and the target cotton line M5 with yield potential and stability was selected.
万方数据
维普
