Genetic analysis of protein using major gene plus polygene methods in peanut (Arachis hypogaea L.)

215 recombinant inbred lines(RILs) of F8 and their parents Zheng8903 and Yuhua4 were planted in Sanya,Hainan province and Yuanyang,Henan province,respectively.Protein contents were analyzed with Kjeldahl Auto Analyzer.Major gene plus polygene mixed inheritance model was employed to perform genetic analyses with the RILs.A wide range of variations of protein content,transgressive inheritance phenomenon and normal frequency distribution were detected under each of the two different environments.The genetic models of protein content in both environments were in accordance with model C,i.e.the multi-gene genetic model with multiple gene effects and environmental effects.Further analysis revealed that the polygenic heritability was 29.63% and 18.77%.Environmental effects were 46.05% and 54.08% respectively,indicating prominent environmental effects on protein content.