叶桑种质资源评价与选择OA

[Objective]The study aims to select leaf mulberry germplasm resources suitable for differ-ent breeding purposes.[Method]The leaf mulberry germplasm resources from different sources were used as experimental materials,and the leaf yield,nutrient component content and medicinal compo-nent content of leaf were evaluated and selected by analysis of variance,membership function method and cluster analysis.[Result]There were extremely significant differences in 16 traits among different germplasm,with a coefficient of variation ranging from 4.97%-49.82%,among which the coefficient of variation of peroxidase activity was relatively high.The leaf yield of single plant of'Naisang'and'Nongsang No.8'performed relatively well.'Xiangxi No.7''Dahuasang'and'Jilongsang'had rela-tively high nutrient content.For the medicinal component content,the superoxide dismutase activity and peroxidase activity of'A 18'were relatively high,indicating the better performance in the antioxi-dant capacity.'A 18''Fengtian No.2'and'Zhesangza No.1'showed relatively well in comprehen-sive use.Cluster analysis was used to divide the germplasm into three clusters,and the top 10 germ-plasms of the comprehensive membership function were mainly concentrated in cluster Ⅲ,which had significant advantages in leaf yield,soluble sugar quality ratio,vitamin C quality ratio and proline qual-ity ratio of leaf.[Conclusion]'Naisang''Nongsang No.8'and'Shengdong No.7'and higher leaf yield;'Xiangxi No.7''Dahuasang'and'Jilongsang'and higher nutrient component content;while'A 18''Fengtian No.2'and'6809'and higher medicinal component content;'A 18''Fengtian No.2'and'Zhesangza No.1'were screened out for comprehensive utilization.These excellent germ-plasm resources not only can be considered applying in mulberry production and cultivation in Henan Province according to different cultivation purposes,but also can be treated as parent materials for leaf mulberry hybrid breeding.