PAN Ming-quan,JANG Shu-kun,WANG Li-zhi,et al.Analysis of the Relationship Between Panicle Traits of Rice in Cold Region by Using F2∶3 Separation Population[J].HEILONGJIANG AGRICULTURAL SCIENCES,2019,(05):1-6.[doi:10.11942/j.issn1002-2767.2019.05.0001]
利用F2∶3家系群体分析寒地水稻穗部性状间的关系
- Title:
- Analysis of the Relationship Between Panicle Traits of Rice in Cold Region by Using F2∶3 Separation Population
- 文献标志码:
- A
- 摘要:
- 为深入剖析寒地水稻穗部性状之间的关系,为寒地水稻穗部性状改良提供参考,本研究以高产品种东农415(二次枝梗集中于穗中上部)和优质品种龙稻18(二次枝梗集中于穗下部)及其杂交衍生的包含464个株系的F2∶3家系分离群体为材料,对穗重、穗数、穗长、每穗颖花数、着粒密度、一次枝梗数、二次枝梗数等20个穗部相关性状进行方差分析、相关分析和通径分析。结果表明:这些性状在F2∶3家系分离群体中均存在双向超亲分离,分布频率接近正态分布。相关分析表明,除穗数、一次枝梗结实率与其他各穗部性状之间无显著相关性外,其余穗部性状之间均具有显著或极显著相关性。其中,穗重与大多穗部性状均呈显著或极显著的相关关系,且每穗粒数、每穗颖花数、二次枝梗数、二次枝梗粒数及二次枝梗实粒数与穗重的相关系数较大。通径分析表明,每穗粒数、每穗颖花数和千粒重对穗重作用较大。
- Abstract:
- In order to analyze the relationship between panicle traits of rice in cold region and provide a reference to improve panicle traits of rice in cold region.In this study,twenty panicle related traits including panicle number,panicle weight,panicle length,total spikelet number,seed density,primary branch number and secondary branch number were investigated in variance analysis,correlation analysis,and path analysis by using the high-yield variety Dongnong 415 (the second branch was concentrated in the upper part of the ear),the high-quality variety Longdao 18 (the second branch was concentrated in the under part of the ear) and its hybrid-derived F2∶3 separation population containing 464 strains.The results showed that transgressive segregation for all traits was observed in F2∶3 population and the frequency of these traits was approximately normally distributed.The correlation analysis indicated that panicle number and primary branch seed setting rate were showed no significant correlation between the others panicle traits,the majority were showed significant or very significant correlation between each other.For instance,panicle weight was significant or very significant correlated with the others panicle traits,morever,total grain number,total spikelet number,secondary branch number,secondary branch total spikelet number and secondary branch grain number were showed higher correlation coefficent with panicle weight.The result of path analysis suggested that total grain number,total spikelet number and 1000-grain weight played a more important role on panicle weight.
参考文献/References:
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备注/Memo
收稿日期:2019-01-04