数字农科院2.0

Construction of a High-Density Genetic Map Based on SLAF Markers and QTL Analysis of Leaf Size in Rice

文献类型： 外文期刊

作者： Yi Wen ; Yunxia Fang ; Peng Hu ; Yiqing Tan ; Yueying Wang ; Linlin Hou ; Xuemei Deng ; Hao Wu ; Lixin Zhu ; Li Zhu ; Guang Chen ; Dali Zeng ; Longbiao Guo ; Guangheng Zhang ; Zhenyu Gao ; Guojun Dong ; Deyong Ren ; Lan Shen ; Qiang Zhang ; Dawei Xue ; Qian Qian ; Jiang Hu

作者机构：

关键词： Rice; Leaf; Quantitative Trait Loci; Genetic Map; Specific Length Amplified Fragment Sequencing; Fine Mapping

期刊名称： FRONTIERS IN PLANT SCIENCE

ISSN： 1664-462X

年卷期： 2020 年 11 卷

页码：

收录情况： JCR（2021版）

摘要： Leaf shape is an important agronomic trait for constructing an ideal plant type in rice, and high-density genetic map is facilitative in improving accuracy and efficiency for quantitative trait loci (QTL) analysis of leaf trait. In this study, a high-density genetic map contained 10,760 specific length amplified fragment sequencing (SLAF) markers was established based on 149 recombinant inbred lines (RILs) derived from the cross between Rekuangeng (RKG) and Taizhong1 (TN1), which exhibited 1,613.59 cM map distance with an average interval of 0.17 cM. A total of 24 QTLs were detected and explained the phenotypic variance ranged from 9% to 33.8% related to the leaf morphology across two areas. Among them, one uncloned major QTLqTLLW1(qTLL1andqTLLW1) involved in regulating leaf length and leaf width with max 33.8% and 22.5% phenotypic variance respectively was located on chromosome 1, and another major locusqTLW4affecting leaf width accounted for max 25.3% phenotypic variance was mapped on chromosome 4. Fine mapping and qRT-PCR expression analysis indicated thatqTLW4may be allelic toNAL1(Narrow leaf 1) gene.

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