非洲新稻与籼稻杂交后代育性及主要农艺性状的观察鉴定  

Evaluation of fertility and major agronomic traits in offspring derived from cross between new rice for Africa (NERICA) and Indica rice (Oryza sativa L.)

作　　者：秦钢[1] 黄大辉[1] 刘驰[1] 马增风[1] 张月雄[1] 阎勇[1] 卢星高 

机构地区：[1]广西农业科学院水稻研究所/广西水稻遗传改良生物技术重点实验室,南宁530007 [2]广西东亚扶南糖厂,广西崇左532100

出　　处：《南方农业学报》2013年第4期562-565,共4页Journal of Southern Agriculture

基　　金：国家自然科学基金项目(31000703);广西农业科学院基本科研业务专项项目[201005(基);2012YZ12]

摘　　要：【目的】探明非洲新稻与籼稻育性及主要农艺性状表现，为在水稻育种中利用非洲新稻资源提供理论依据和材料基础。【方法】利用非洲新稻Z3与籼稻龙特浦B杂交获得F1群体，再自交获得F2群体，在水稻成熟期调查亲本和各群体的结实率及主要农艺性状。【结果】Z3与龙特浦B杂交F1的自交结实率为70％，F2群体的自交结实率为24％～80％；F2群体中各性状都存在变异，可从中筛选到综合农艺性状优良的单株。相关分析结果表明，杂交F2群体单株产量与株实粒数、株穗数、结实率和穗长之间存在极显著正相关，与株高之间存在显著正相关。【结论】非洲新稻Z3与籼稻龙特浦B杂交后代之间不存在自交不育问题，可在水稻育种中直接利用。[Objective]The present research was conducted to evaluate the fertility and important agronomic traits in the offspring derived from cross between new rice for Africa （NERICA） and Indiea rice （Oryza sativa L.）, in order to provide theoretical references and materials for NERICA utilization in rice breeding. [Method]NERICA cuhivar Z3 was crossed with Indica rice cuhivar Longtepu B to produce F1 population and selfing F2 generation. The fertility and important agronomic traits of each generation were evaluated at the maturing stage of rice. [ Result ]The seed setting rate of F1 generation was 70%, and the seed setting rate of F2 population ranged from 24% to 80%. Variation was found in F2 generation for all traits, and individual plant with excellent agronomic comprehensive traits could be screened out from F2 population. Grain yield per plant exhibited extremely significantly positive correlation with filled grains per plant, panicles per plant, seed setting rate and panicle length, as well as significant positive correlation with plant height. [Conclusion]There was no self-sterility in filial generations between NERICA and Indica rice. It is feasible to directly apply NERICA in rice breeding.

关 键 词：水稻 非洲新稻Z3 籼稻龙特浦B杂交 育性 农艺性状 

分 类 号：S511[农业科学—作物学]