云南农业大学学报（自然科学）2018，Vol.33Issue(5)：783-789,7.DOI:10.12101/j.issn.1004-390X(n).201804040
云南水稻品种与美国光壳稻构建的重组近交系的籽粒与糙米相关性状遗传分析
Genetic Analysis of Grain and Brown Rice Related Traits Based on the Recombinant Inbred lines Constructed by Yunnan Local Rice and American Nuda Rice
摘要
Abstract
[Purposes]Rice grain and brown rice related traits are the important factors that influence the yield and quality of rice. And those traits are all quantitative traits. Study on the genetic pattern of those traits based on appropriate genetic segregation population, is the basis of mapping and cloning related function genes.[Methods] A recombinant inbred line (RIL) containing 90 lines were constructed with American Nuda Rice, US19 and a Yunnan Local Rice variety, TJ15 as parents by single seed descent method. And the genetic pattern of grain and brown rice related traits were researched using correlation and path analysis based on the data of RIL.[Results] The grain and brown rice traits, such as grain length (GL), grain width (GW), length-width ratio (L/W), brown rice length (BRL), brown rice width (BRW), brown rice length-width ratio (BL/W), thousand grain weight (TGW) and brown rice ratio (BRR) were continuous distribution, accord with quantitative trait feature. All studying traits were wide-ranging variation, and exited a lot of super-parent lines in RIL. Correlation analysis showed that TGW was positive related GL, GW, BGL and BGW (P<0.05). Path analysis showed that GW and L/W were the main traits which influence the TGW. The shape of brown rice is depended by the grain shape, and the brown rice ratio is mainly related with TGW.[Conclusion]There is a wide range of genetic recombination variation in the recombinant inbred line population derived from American Nuda Rice, US19 and a Yunnan Local Rice variety, TJ15. Except GW and grain length-width ratio, there are other traits that have a significant effect on grain weight, high BRR can be found in both slender grain type rice and short round grain rice, and this is the basis for study the relationship between BRR and grain filling feature based our data and create excellent germplasm materials.关键词
水稻/重组近交系/籽粒/糙米/通径分析Key words
rice (Oryza sativa L.)/recombinant inbred lines (RIL)/rice grain/brown rice/path analysis分类
农业科技引用本文复制引用
白和灵,李明波,孔芹,尤丽,姚贵燕,谭亚玲,徐津..云南水稻品种与美国光壳稻构建的重组近交系的籽粒与糙米相关性状遗传分析[J].云南农业大学学报（自然科学）,2018,33(5):783-789,7.基金项目
云南省重点科技项目(2014BB016). （2014BB016）
