云南香型软米水稻资源农艺性状遗传效应研究  

Genetic Effects of Agronomic Traits in Yunnan Aromatic Soft Rice Resources

作　　者：罗龙[1] 陶永宏[1] 韦永贵[1] 罗天刚[1] 卢光辉[1] 杨芬[1] 李仕金[1] 赵大伟[1] 申世安[1] 李存龙[1] 

机构地区：[1]云南省文山州农业科学院稻作研究所,文山663000

出　　处：《植物遗传资源学报》2012年第6期992-996,1004,共6页Journal of Plant Genetic Resources

基　　金：云南省重点新产品开发计划项目(2009BB09);云南省科技创新人才计划项目(2009CI086);云南省文山州重大科技攻关项目

摘　　要：选取5份云南地方香型软米水稻种质资源和6份自育香型软米保持系按5×6不完全双列杂交设计(NCⅡ)配制成30个组合,采用加性-显性-上位性遗传模型,分析云南香型软米11个农艺性状的遗传效应。结果表明,云南香型软米多数农艺性状的遗传主要受加×加上位性效应、加性×环境效应、显性×环境效应的影响,还存在不同程度的加性效应和显性效应,单株产量受基因加性效应、显性效应、加×加上位性效应、加性×环境效应、显性×环境效应的影响;株高、有效穗的遗传率以普通狭义遗传率为主,其他性状的普通狭义遗传率和互作狭义遗传率均达极显著水平;产量构成性状之间存在不同类型和不同程度的遗传相关,多数性状之间以加×加上位性、加性×环境和显性×环境互作效应显著。The genetic effects of 11 agronomic traits were analyzed using an additive-dominance-epistasis model in incomplete diallel cross （NCII） design experiment. A total of 30 crosses were derived from 5 aromatic soft rice landraces in Yunnan as female parents and 6 own-breeding aromatic soft maintenance lines as male parents. The re- sults showed that most agronomic traits of aromatic soft rice were affected by additive × additive epistasis,additive × environment interaction and dominance× environment interaction,and the additive effect and dominance effect were detected at different levels. Yield per plant was affected by gene additive effect, dominance effect, additive × additive epistasis, additive × environment interaction, dominance× environment interaction. The general narrow sense herita- bility of plant height and panicle number was predominant and the other traits of the general narrow sense heritabili- ty and interactive narrow sense heritability have significance at 0.01 level;The genetic correlation among yield components were detected at different types and levels,and the genetic correlation among most traits were mainly affected by additive ×additive epistasis, additive × environment interaction, and dominance× environment interaction.

关 键 词：香型软米 农艺性状 遗传效应 遗传率 遗传相关 

分 类 号：S511[农业科学—作物学]