不同玉米品种的品质、产量差异及机理研究

研究了不同品种对玉米子粒产量和品质的影响。结果表明:玉米产量和品质的形成是品种遗传特性和环境因素共同作用的结果,子粒品质之间的差异更多的表现为品种的遗传特性。根系分布影响品种间土壤水分、养分的吸收和地上部生物量的增长,直接影响光合产物的积累;植株将吸收、贮存的N、P在灌浆期输送到子粒的比例品种间存在差异,是子粒蛋白含量产生差异的生理基础;品种的灌浆特性影响玉米子粒及其品质的形成。

Study on Quality and Genetic Affected Yield and the Mechanisms of Different Maize Varieties

The influences of maize varieties on seed yield and quality of maize were studied and the results showed that the formation of seed yield and quality were the synthetical results of both heredity properties and environmental factors. The difference of quality was mainly determined by heredity properties. Though the effects on soil water and nutrient assimilation and the growth of ground biomass, root distribution of different varieties had direct influences on photosynthetic output. It was the physiological basis of different protein content that the quantity of accumulated and absorbed nitrogen and phosphorus of plant were input during milky stage. The milky property of maize variety influenced the seed formation and quality.