摘要
以樱桃番茄(Lycopersicon esculentum var.cerasiforme Alef.)圆形自交系W403(P1)和梨形自交系W403(P2)为亲本,构建P1、F1(P1×P2)、P2、B1(F1×P1)、B2(F1×P2)和F2共6个家系世代群体,应用植物数量性状主基因+多基因混合遗传模型和经典遗传学方法对该6个家系世代群体果长进行多世代联合分析,结果表明:W403果长受一对隐性等位主基因控制,W403×W405遗传符合1对主基因+多基因遗传模型。B1、B2和F2群体主基因遗传率分别为70.20%、54.73%和48.78%,多基因遗传率分别为0,19.94%和26.67%,说明F2世代果长表现出较高的主基因遗传率,并受环境影响。对W403×W405组合果长性状的改良要以主基因为主,同时注意环境的影响。
W403 （a round-shaped） and W405 （a pear-shaped var. cerusiforme） were employed to establish six genealogical populations （P1 F1, P2, B1, B2 and F2）. The Fruit length of the populations were analyzed by means of classic genetics and the major gene ＋ polygene mixed inheritance model of quantitative traits; The analysis indicated that the Fruit length in W403 was controlled by a recessive major gene and the inheritance of the Fruit length fitted one major gene plus polygene model. Heritability values of the major genes of B1, B2 and F2 population were estimated as 0%, 19.94% and 26.67% respectively, while those polygene were 70.20%, 54.73% and 48.78%. These results indicated that major gene in F2 was a key factor and environment factor was also relatively important. This implies that in the genetic improvement of Fruit length major gene is a main factor whereas environmental effect should be taken care of.
出处
《沈阳农业大学学报》
CAS
CSCD
北大核心
2009年第1期88-91,共4页
Journal of Shenyang Agricultural University
基金
辽宁省工程技术中心专项项目(2006402034)
关键词
樱桃番茄
果长
主基因+多基因
遗传分析
Lycopersicon esculentum var. cerasiforme A lef.
Fruit length
major gene＋polygene
genetic analysis
