Twenty five soybean strains of similar growth period were grown at eight locations simultanously in three northeast provinces of China.Most of the experimental sites differed markedly in temperature,precipitation, soi...Twenty five soybean strains of similar growth period were grown at eight locations simultanously in three northeast provinces of China.Most of the experimental sites differed markedly in temperature,precipitation, soil fertility and length of growing season.Protein and oil contents were detelmined to study the effects of ecological conditions on soybean chemical composition. The results showed that the average protein and protein + oil contents were higher at the south locations and lower at north locations, but there was no consistent variation for oil content,and there was no significant difference among most of the sites. Oil content of strains was highest when planted in Jiling. Combined analyses of variance indicated that there existed significant genotype,location and G×E interactions effects. F values of G×E interactions for all traits,although significant at 0.01 level of probability, were extremely smaller than those for location and genotype.This suggested that G×E interaction effects were relatively less important than both genotyp and location effects.Phenotypic correlations of the performance of genotypes,on single ehtry -basis,among eight locations were all positive for protein and protein+ oil and most of correlation coefficients were significant at 0.01 level of probability.This indicated that the relative performance of genotypes at each location was similar. In contrast,most of the correlation coefficients for oil content among the eight locations were not significant.Therefore,G×E interactions should be considered in breeding for high oil soybeans,as it may lead to the instability of genotypes and affect the rankings of genotypes when soybeans arc grown in diverse environments.展开更多
文摘Twenty five soybean strains of similar growth period were grown at eight locations simultanously in three northeast provinces of China.Most of the experimental sites differed markedly in temperature,precipitation, soil fertility and length of growing season.Protein and oil contents were detelmined to study the effects of ecological conditions on soybean chemical composition. The results showed that the average protein and protein + oil contents were higher at the south locations and lower at north locations, but there was no consistent variation for oil content,and there was no significant difference among most of the sites. Oil content of strains was highest when planted in Jiling. Combined analyses of variance indicated that there existed significant genotype,location and G×E interactions effects. F values of G×E interactions for all traits,although significant at 0.01 level of probability, were extremely smaller than those for location and genotype.This suggested that G×E interaction effects were relatively less important than both genotyp and location effects.Phenotypic correlations of the performance of genotypes,on single ehtry -basis,among eight locations were all positive for protein and protein+ oil and most of correlation coefficients were significant at 0.01 level of probability.This indicated that the relative performance of genotypes at each location was similar. In contrast,most of the correlation coefficients for oil content among the eight locations were not significant.Therefore,G×E interactions should be considered in breeding for high oil soybeans,as it may lead to the instability of genotypes and affect the rankings of genotypes when soybeans arc grown in diverse environments.
