Genotype-by-Environment Interaction and Stability of Yield Components in Peanut
The yield composition of wheat interplanting peanut varieties was analyzed to provide reference for variety evaluation and high-yield breeding.Based on the regional trial data of peanut complex in Henan province from 2016 to 2017,path analysis and GGE biplot analysis of yield and its related nine agronomic traits were performed.The results showed that the variation range of milled rice rate was the smallest,and the variation coefficients of main stem height,number of pods per plant and pod weight per plant were larger,which had the potential for improvement.Yield showed a significant positive correlation with 100-seed weight and 100-pod weight.The direct path coefficient of 100-seed weight was the largest.The order of direct path coefficients and correlation coefficients of agronomic traits and yield were not completely consistent,it was mainly dued to the interaction between agronomic traits and their indirect effects on yield.The results of GGE biplot showed that the top four varieties with high and stable yield were Kainong 79,Shanghua 21,Luohua 1 and Zhengnonghua 18.The selection of 100-seed weight and 100-pod weight,the key factors affecting yield,should be emphasized,and the main stem height,lateral branche length,total branching number and number of pod branches should be controlled in the selection of peanut varieties.
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