生态条件对籼粳稻杂交F_2代亚种特性分化与经济性状的影响  

Effect of Ecologic Environment on Economic Traits and the Differentiation of Subspecies Traits in F_2 Generation of Cross between Indica and Japonica

作　　者：程玲[1] 王鹤潼[1] 荣俊珍[1] 徐正进[1] 

机构地区：[1]沈阳农业大学水稻研究所,辽宁沈阳110866

出　　处：《种子》2012年第3期1-6,共6页Seed

基　　金：国家自然科学基金项目(编号:30971845)

摘　　要：以籼粳稻杂交F2代群体(七山占/秋光)为供试材料,2010年分别在广东省与辽宁省同年种植,研究籼粳亚种属性和经济性状的分化规律以及两者之间的相互关系。结果表明,广东和辽宁2个生态地区群体,亚种特性呈相似正态分布,未出现偏分现象,说明在F2群体中遗传重组对群体的作用呈主导性。经济性状发生较显著的分化,穗数、千粒重、1次枝梗数及粒数辽宁地区显著高于广东,而产量、穗粒数及结实率呈现相应生态条件的偏向性,籼型及偏籼型在广东地区较高,粳型及偏粳型在辽宁地区较高,说明在籼粳交F2代中不同的籼粳类型存在较为显著的生态适应性,并且该结果在相关性分析也得了验证。此外,对进一步研究籼粳分化机制的相关问题进行了讨论。The purpose of this research was to reveal the rules of subspecies characteristics between Japonica and Indica,economic traits and the relationship between the both by using the F2 generation of crossing between Qishanzhan（Indica） and Akihikari（Japonica）,which planted in Guangdong Province and Liaoning Province separately.The results showed that the subspecies characteristics of the F2 group,planted in Liaoning and Guangdong province,separately appeared the normal distribution,which indicated the function of genetic recombination played a leading role.Simultaneously,there was prominent affection on the differentiation of Japonica and Indica by environment in reproductive growing stage of rice.And showed that there was a significant differentiation in economic traits,and the appearance in Liaoning was better than which in Guangdong on economic traits for panicle number,kilograin weight and characteristics of primary panicle branches.But things were different on yield,spikelet number and seed setting rate which on Japonica type and Japonica-clinous type were higher in Liaoning and on Indica type and Indica-clinous type were higher in Guangdong,which probably resulted from Ecological adaptation.Simultaneously,the aboved results had also been validated by Relationship Analysis.Furthermore,the article also elaborates some relational questions about made a further research on the differentiation between Japonica and Indica.

关 键 词：水稻 籼粳杂交 亚种特性 经济性状 生态环境 

分 类 号：S511[农业科学—作物学]