Primary Analysis of the Heterosis in Peanut Hybrid F_1

[Objective] In order to understand the heterosis in peanut.[Method] The F1 plants of 6 crosses,the 2 high yield varieties(line) Yueyou7 and ZK04 as the receptors,5 varieties of Xinhuixiaoli,Liuyuexue,J11,Q02 and Zhouzixiaoli as the donors,were selected as the materials.The over-high parent heterosis and mid-parent heterosis of 3 plant characters,the main stem height,the primary branch length and the main stem diameter,and 3 pod characters,a number of filled pods per plant,the weight of pods per plant and the size of pod,were analyzed.[Result] The main stem height,the primary branch length and the main stem diameter of F1 showed over-high parent heterosis or positive mid-parent heterosis in most crosses.A number of filled pods per plant,the weight of pods per plant and the size of pod of F1 didn't showed over-high parent heterosis in most crosses and showed positive mid-parent heterosis in a few crosses.[Conclusion] The heterosis varied with the characters and varieties in peanut.