Square Logistic Model for the Appearance of Lethal Recessive Homozygous Genotype in Random Mating Population  

随机交配群体隐性致死纯合基因型出现的平方Logistic模型(英文)

作　　者：韦文惠[1] 王子平[2] 林建国[1] 蔡润[3] 李大林[1] 

机构地区：[1]柳州职业技术学院基础部,广西柳州545006 [2]广西工学院科学技术处,广西柳州545006 [3]上海交通大学农业与生物学院,上海200240

出　　处：《Agricultural Science & Technology》2008年第3期1-5,共5页农业科学与技术（英文版）

基　　金：国家自然科学基金(30671111)~~

摘　　要：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.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.

关 键 词：Fitness RECESSIVE LETHAL HETEROSIS Random MATING Equilibrium 

分 类 号：S513[农业科学—作物学]