Genetic Analysis on Agronomic and Quality Traits in Different Soybean Combinations
In order to match parents properly and enhance breeding efficency, 11 soybean varieties were used in a 6 × 5 NCII genetic mating design. Heritability and combining ability effect of 11 traits was analyzed. Results showed that protein content , 100-seed weight and nodes per stem had higher narrow sense heritability, and they should be selected in early generations. Stem diameter,insect bitten rate had lower narrow sense heritability,and they should be selected in middle or late generations. The additive effect was dominant for all tested traits. Jilin 38 and Tongtong 13 had higher general combing ability (GCA)for seed yield per plant and they should be selected as parents for high-yield breeding. Yi 3 had higher GCA in protein content and it should be selected as parents for high-protein breeding. Higher special combining ability(SCA)for yield related traits were observed in Jilin 35 × PEMVy,Tongnong 13 × SAPPRO, Lines 2002 × EXP and Jilin 38 x Yi 3. They could be used as a high yield potential combination in the offspring.