广西植物Issue(5)：704-708,5.DOI:10.11931/guihaia.gxzw201408012
黄瓜雄花性状的遗传分析
Genetic analysis of male floral traits in cucumber
摘要
Abstract
To investigate the hereditary characters of male floral traits in cucumber,genetic analysis was carried out u-sing erzaozi (small male flowers)and NC-76(large male flowers)as parents to build four generations by means of multigenerational j oint segregation analysis.The results showed that two floral traits of segregation population were quantitatively genetic traits and controlled by major genes with unimodal skewness distribution.The inheritance of flower pedicel length was appropriate for the model of two complete dominance major genes+additive-dominance pol-ygenes(E-5),flower corolla length was appropriate for the model of two additive-dominance-epitasis major genes+additive-dominance-epitasis polygenes (E-1 ).In addition,the additive effects of two maj or genes controlling flower pedicel length equal which were 0.573.The additive effect and dominant effect of polygenes were similar,and are all negative.The additive effects of two major genes controlling flower corolla lengths were zero,and the dominance effects of major genes were-0.226 and-0.472,respectively,the epistemic effects of additive×additive and dominant× dominant were the main factors.The dominat effect of polygenes was the major,and the value was 0.613 greater than the negative values of additive effect.The major genes heritabilities of F2 population reached 61.04% and 69.60% in two floral traits,respectively,and the polygenes heritabilities were zero.Thus the male floral traits were quantitative inheritance,and the heritabilities were relatively high.In breeding practices,it could thus be seen that,gentic selection of floral charactors in cucumber should be performed at earlier separate generations.关键词
黄瓜/雄花性状/主基因+多基因/遗传分析Key words
cucumber/male flowers trait/major gene plus polygene/genetic analysis分类
农业科技引用本文复制引用
苗永美,隋益虎,简兴..黄瓜雄花性状的遗传分析[J].广西植物,2015,(5):704-708,5.基金项目
国家“863”计划项目(2012AA100102) （2012AA100102）
校级自然科学研究重点项目(ZRC2014410) （ZRC2014410）
