Studies On The Major Gene Plus Polygene Inheritance Of Several Traits In Micro-Endosperm Super-High Oil Corn

By the method of Gai Junyi, the joint segregation analysis of the major gene pluspolygene mixed inheritance model of quantitative trait was conducted to study theinheritance of 10 major traits in micro-endosperm super-high oil corn. The sixgenerations, P₁, F₁, P₂, B₁, B₂ and F₂, from each of two crosses were used in this study. Theresults as follows:(1)Studies on the major gene plus polygene inheritance of kernel percent oil.The inheritance of kernel percent oil in two crosses fitted the model of two majorgenes plus polygenes. Two crosses had the highest selection efficiency in F₂.(2)Studies on the major gene plus polygene inheritance of yield traits.The inheritance of ear length in two crosses fitted the model of polygenes. Twocrosses had the highest selection efficiency in F₂.The inheritance of ear diameter in cross I fitted the model of one major gene pluspolygenes, which had the highest selection efficiency in B₁. The inheritance of eardiameter in crossâ…¡fitted the model of polygenes, which had the highest selectionefficiency in F₂.The inheritance of bald tip in crossâ… fitted the model of two major genes pluspolygenes, which had the the highest selection efficiency in F₂. The model of bald tip incrossâ…¡fitted the model of one major gene plus polygenes, which had the the highestselection efficiency in B₂. The inheritance of kernel weight per ear in crossâ… fitted the model of polygenes,which had the the highest selection efficiency in B₁. The inheritance of kernel weightper ear in crossâ…¡fitted the model of one major gene plus polygenes, which had the thehighest selection efficiency in B₁.The inheritance of 100-kernel weight in crossâ… fitted the model of polygenes, whichhad the the highest selection efficiency in F₂. The inheritance of 100-kernel weight incrossâ…¡fitted the model of major gene plus polygenes, which had the the highestselection efficiency in B₁.The inheritance of kernel row wasn't discovered in this experiment. So theinheritance effects of Kernel row weren't estimated.(3)Studies on the major gene plus polygene inheritance of plant type traits.The inheritance of plant height in crossâ… fitted the model of polygenes, which hadthe the highest selection efficiency in F₂. The inheritance of plant height in crossâ…¡fittedthe model of one major gene plus polygenes, which had the the highest selectionefficiency in F₂.The inheritance of ear height in crossâ… fitted the model of one major gene pluspolygenes, which had the the highest selection efficiency in F₂. The inheritance of earheight in crossâ…¡fitted the model of polygenes, which had the the highest selectionefficiency in F₂.The inheritance of stem diameter in two crosses fitted the model of polygenes. Thecrossâ… had the the highest selection efficiency in B₁. The crossâ…¡had the the highestselection efficiency in B₂.The all results showed that the inheritance of kernel percent oil and bald tip fittedthe model of major gene plus polygenes. The inheritance of stem diameter and earlength fitted the model of polygenes. The inheritance of kernel row wasn't discovered inthis experiment. Other traits didn't have the same inheritance models in the two crosses.