Genetic analysis of cold tolerance at the germination and booting stages in rice by association mapping

PloS One
Yinghua PanZichao Li

Abstract

Low temperature affects the rice plants at all stages of growth. It can cause severe seedling injury and male sterility resulting in severe yield losses. Using a mini core collection of 174 Chinese rice accessions and 273 SSR markers we investigated cold tolerance at the germination and booting stages, as well as the underlying genetic bases, by association mapping. Two distinct populations, corresponding to subspecies indica and japonica showed evident differences in cold tolerance and its genetic basis. Both subspecies were sensitive to cold stress at both growth stages. However, japonica was more tolerant than indica at all stages as measured by seedling survival and seed setting. There was a low correlation in cold tolerance between the germination and booting stages. Fifty one quantitative trait loci (QTLs) for cold tolerance were dispersed across all 12 chromosomes; 22 detected at the germination stage and 33 at the booting stage. Eight QTLs were identified by at least two of four measures. About 46% of the QTLs represented new loci. The only QTL shared between indica and japonica for the same measure was qLTSSvR6-2 for SSvR. This implied a complicated mechanism of old tolerance between the two subspecies. According to th...Continue Reading

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Citations

Dec 14, 2017·Journal of Experimental Botany·Xiang WangJian Hua
Feb 28, 2019·Plant Biotechnology Journal·Citao LiuChengcai Chu
Jan 25, 2020·Journal of Experimental Botany·Yao ShiMichael R Schläppi
Jun 24, 2017·Frontiers in Plant Science·Michael R SchläppiDebbie L Boykin
Oct 17, 2017·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Jilong LiZichao Li
Nov 21, 2017·Plant Cell Reports·Raul Antonio SperottoJanette Palma Fett
Jun 29, 2018·International Journal of Genomics·Yong-Mei JinXiu-Feng Lin
Mar 24, 2017·Nature Communications·Zhanying ZhangZichao Li
Dec 19, 2019·Frontiers in Plant Science·Rakesh Kumar VermaViswanathan Chinnusamy
Apr 10, 2019·Molecular Genetics and Genomics : MGG·S K PradhanJ N Reddy
Oct 23, 2020·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Swastideepa SahooSharat Kumar Pradhan

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Methods Mentioned

BETA
genotyping
electrophoresis

Software Mentioned

TASSEL
STRUCTURE

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