Comprehensive Evaluation and Cluster Analysis on Main Agronomic,Yield and Quality Traits of Peanut Intercropped with Wheat in Henan Province
[Objective]The order to understand genetic differences and comprehensive performance of peanut intercropped with wheat in Henan Province,and to promote the application of variety in breeding and production.[Method]14 main economic and quality traits were analyzed by variation,correlation,cluster and principle component analysis.[Result]The result showed that the variable coefficient range of 14 traits was 2.74％to 34.34％,among that of stem height,total number of branch,pod yield of per plant,oleicacid and linoleic acid respectively were 8.12％,9.05％,10.76％,26.32％,34.34％and showed larger variation,among that of kernel percentage,fat and protein were 2.74％、3.73％,5.83％and showed smaller variation.The correlation analysis showed that the correlation coefficient of pod yield and pod yield of per plant,100-pod weight,100-kernel weight respectively were 0.57,0.57,0.55 and showed extremely significantly positive correlation,that of pod yield and the main stem height,branch length respec-tively were-0.56,-0.53 and showed extremely significantly negative correlation,that of pod yield and total number of branches was-0.42 and showed significantly negative correlation.The key of high yield was the effective control of population overgrowth.The 22 peanut varieties were classified into six groups by cluster analysis,and medium fruit type,large fruit type and super large fruit type were obviously divided,in which,group Ⅰ and Ⅳ can be used as excellent resources for breeding high-yield large fruit variety,group Ⅵ can be used as germplasm resources for breeding high oleic acid variety.14 main traits were con-cluded into 4 main components by using principal component analysis,and the cumulative contribution rate was 80.91％,which could represent the most information of all the indices.[Conclusion]100-pod weight,100-kernel weight,kernel percentage,pod yield of per plant,pod yield can be used as important reference traits for the selection peanut intercropped with wheat variety.The comprehensive scores of Shanghua21,Kainong86,Yuhua82,Yuhua102,Shanghua22 and Luohua1 were 1.116 8～1.674 5,and they can be used as the main varieties for peanut production and the backbone materials for peanut breeding parents.
peanut intercropped with wheattraitsyieldcluster analysisprincipal component analysis
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