农业科学与技术（英文版）
農業科學與技術（英文版）
농업과학여기술（영문판）
AGRICULTURAL SCIENCE & TECHNOLOGY
2008年
3期
1-5
,共5页
韦文惠%王子平%林建国%蔡润%李大林
韋文惠%王子平%林建國%蔡潤%李大林
위문혜%왕자평%림건국%채윤%리대림
Fitness%Recessive lethal%Heterosis%Random mating%EquilibriumCAI Run,Corresponding author. E-mail: cairun@sjtu.edu.cn
From the random mating population of maize, the relationship between heterosis and albino seedling was analyzed by means of mathematical theory, further the square logistic model for the appearance of lethal recessive homozygous genotype was deduced. The model shows that heterosis can determine the genetic structure and proportion of population. It approves, that the proportion of aa in each generation of maize seedlings shows a similar Logistic curve in growth process till equilibrium, so long as Aa containins lethal gene a from mutation presents heterosis. The ratio of equilibrium state of aa is determined by the ratio of AA-Aa fitness. Heterosis is helpful for the keeping of genetic diversity of population.
