Studies On The Majorgene Plus Polygene Interitance Of Principal Traits In High Oil Maize

Applicat the method of Gai Junyi, the joint segregation analysis of a mixed genetic major gene plus poly gene mixed inheritance model of quantitative trait in plants was conducted to study the inheritance of 10 major traits in high oil maize,the six populations, P1,F1,P2,B1,B2 and F2,from each of two crosses were used in this study. Results showed that:1. Studies on oil maize the major gene plus polygene inheritance of plant type traits.In crossâ… ,the inheritance of stem high trait followded two major genes plus polygenes model, which had the highest major genes plus polygenes heritabilities in B2. In crossâ…¡the inheritance of stem high trait followded one major genes plus polygenes model, which had the highest major genes plus polygenes heritabilities in B2.In two crosses,the inheritance of stem diameter trait followded one major gene plus polygenes model.In crossâ… had the highest major genes plus polygenes heritabilities in F2. In crossâ…¡had the highest major genes plus polygenes heritabilities in B2.2. Studies on oil maize the major gene plus polygene inheritance of yield traits.In crossâ… ,the inheritance of Ear length trait followded polygenes model, which had the highest polygenes heritabilities in F2. In crossâ…¡the inheritance of Ear length trait followded one major gene plus polygenes model, which had the highest major genes plus polygenes heritabilities in F2.In crossâ… ,the inheritance of Ear diameter trait followded polygenes model, which had the highest polygenes heritabilities in F2. In crossâ…¡, the inheritance of Ear diameter trait followded one major gene plus polygenes model, which had the highest major genes plus polygenes heritabilities in F2.In two crosses,the inheritance of Single spike kernel weight trait followded polygenes model, two corsses had the highest polygenes heritabilities in F2.In crossâ… ,the inheritance of 100-kernel weight trait followded polygenes model, which had the highest polygenes heritabilities in B1. In crossâ…¡,the inheritance of 100-kernel weight trait followded two major gene model, which had the highest major gene heritabilities in B2.The inheritance of Bold-tip length trait wasn't found in this experiment. So the heritabilities of Bold-tip length trait weren't reckoned.3. Studies on oil maize the major gene plus polygene inheritance of starch,protein,fat traits. In two crosses,the inheritance of fat trait followded one major gene plus polygenes model, two corsses had the highest major gene plus polygenes heritabilities in B1.In two crosses,the inheritance of starch trait followded polygenes model. In crossâ… had the highest polygenes heritabilities in B1.In crossâ…¡had the highest polygenes heritabilities in B2.In crossâ… ,the inheritance of protein trait followded two major genes plus polygenes model, which had the highest major gene plus polygenes heritabilities in B2. In crossâ…¡,the inheritance of protein trait followded two major genes model, which had the highest major gene heritabilities in B1.The all results showed that the Single spike kernel weight and starch fitted the model of polygenes. The inheritance of stem diameter fitted the model of one major gene plus polygenes.The inheritance of Bold-tip length wasn't found in this experient. Other traits didn't have identical inheritance models in the two crosses.