Correlation of rice yield based on RILs population QTL analysis.

IF 1.9 Q3 GENETICS & HEREDITY
Junrong Liu, Xinyi Lou, Lin Zhang, Tiangang Hou, Xin Xin, Yan Wang, Shu Wang, Yuancai Huang, Chanchan Zhou, Baoyan Jia, Yue Feng
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Abstract

Rice production has been a primary concern in crop quality breeding. In this study, India japonica variety M494 and indica variety Z9B were used as parents. Hybridization and selfing were conducted to obtain recombinant inbred lines (RILs) as the experimental material. The F3 and F7 populations were analyzed to determine six yield-related traits, including panicle length, effective panicle number, number of grains per panicle, seed setting rate, yield per plant, and grain density. QTL mapping of rice yield-related traits and tillering angle was performed using the SSR molecular marker linkage map, resulting in the identification of 19 QTLs controlling panicle length, grain number per panicle, effective panicle number, seed setting rate, grain density.Additionally, multiple regression analysis and path analysis were employed to investigate the relationship between different agronomic traits and rice yield in the F7 population. An optimal regression equation, YYPP = -24.515 + 0.694XPL + 1.273XPN + 0.007XPPG + 18.981XSSR was derived, and it was concluded that SSR was the trait with the greatest impact on YPP, followed by PL.

基于ril群体QTL分析的水稻产量相关性研究。
水稻生产一直是作物品质育种的主要关注点。本研究以印度粳稻品种M494和籼稻品种Z9B为亲本。通过杂交和自交获得重组自交系(RILs)作为实验材料。对F3和F7群体的穗长、有效穗数、每穗粒数、结实率、单株产量和籽粒密度等6个产量相关性状进行了分析。利用SSR分子标记连锁图谱对水稻产量相关性状和分蘖角进行QTL定位,鉴定出控制穗长、每穗粒数、有效穗数、结实率、粒密度的QTL 19个。此外,利用多元回归分析和通径分析,探讨了F7群体不同农艺性状与水稻产量的关系。得到最优回归方程YYPP = -24.515 + 0.694 × PL + 1.273XPN + 0.007XPPG + 18.981XSSR, SSR是对YPP影响最大的性状,其次是PL。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
4.90
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