QTL mapping using an ultra-high-density SNP map reveals a major locus for grain yield in an elite rice restorer R998

QTL mapping using an ultra-high-density SNP map reveals a major locus for grain yield in an elite rice restorer R998

Abstract To dissect the genetic basis of yield formation in restorer line of hybrid rice, we conducted QTL analysis for 6 yield traits including panicles per plant (PPP), grains per panicle (GPP), grain yield per plant (GY), thousand-grain weight (TGW), above-ground biomass (AGB), and harvest index...

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Main Authors: Manshan Zhu, Dilin Liu, Wuge Liu, Dan Li, Yilong Liao, Jinhua Li, Chongyun Fu, Fuhong Fu, Huijun Huang, Xueqin Zeng, Xiaozhi Ma, Feng Wang
Format: Article
Language:English
Published: Nature Publishing Group 2017-09-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-017-10666-7
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spelling doaj-16e40e32fce74f4282c27662f146bd052020-12-08T00:39:37ZengNature Publishing GroupScientific Reports2045-23222017-09-017111210.1038/s41598-017-10666-7QTL mapping using an ultra-high-density SNP map reveals a major locus for grain yield in an elite rice restorer R998Manshan Zhu0Dilin Liu1Wuge Liu2Dan Li3Yilong Liao4Jinhua Li5Chongyun Fu6Fuhong Fu7Huijun Huang8Xueqin Zeng9Xiaozhi Ma10Feng Wang11Rice Research Institute, Guangdong Academy of Agricultural SciencesRice Research Institute, Guangdong Academy of Agricultural SciencesRice Research Institute, Guangdong Academy of Agricultural SciencesRice Research Institute, Guangdong Academy of Agricultural SciencesRice Research Institute, Guangdong Academy of Agricultural SciencesRice Research Institute, Guangdong Academy of Agricultural SciencesRice Research Institute, Guangdong Academy of Agricultural SciencesRice Research Institute, Guangdong Academy of Agricultural SciencesRice Research Institute, Guangdong Academy of Agricultural SciencesRice Research Institute, Guangdong Academy of Agricultural SciencesRice Research Institute, Guangdong Academy of Agricultural SciencesRice Research Institute, Guangdong Academy of Agricultural SciencesAbstract To dissect the genetic basis of yield formation in restorer line of hybrid rice, we conducted QTL analysis for 6 yield traits including panicles per plant (PPP), grains per panicle (GPP), grain yield per plant (GY), thousand-grain weight (TGW), above-ground biomass (AGB), and harvest index (HI) using SNP markers in a recombinant inbred lines (RILs) population derived from a cross between a tropical japonica inbred Francis and an elite indica restorer Guanghui 998 (R998). A total of 26 QTLs were detected using a high density genetic map consisting of 3016 bin markers. Nineteen out of the 26 QTL alleles from R998 had a beneficial effect on yield traits. Most of the QTLs were co-located with previously reported rice QTLs. qAGB6 and qHI9, controlling AGB and HI respectively, were detected as novel QTLs. Four QTLs for GY were repeatedly detected across two years, with all the beneficial alleles from R998. Notably, qGY8 explained over 20% of the yield variance in both years. Moreover, qGY8 together with qTGW8 and qHI8 formed a QTL cluster. Markers tightly linked with qGY8 were developed. Cloning of qGY8 will facilitate its further exploitation in high-yield breeding.https://doi.org/10.1038/s41598-017-10666-7
collection DOAJ
language English
format Article
sources DOAJ
author Manshan Zhu
Dilin Liu
Wuge Liu
Dan Li
Yilong Liao
Jinhua Li
Chongyun Fu
Fuhong Fu
Huijun Huang
Xueqin Zeng
Xiaozhi Ma
Feng Wang
spellingShingle Manshan Zhu
Dilin Liu
Wuge Liu
Dan Li
Yilong Liao
Jinhua Li
Chongyun Fu
Fuhong Fu
Huijun Huang
Xueqin Zeng
Xiaozhi Ma
Feng Wang
QTL mapping using an ultra-high-density SNP map reveals a major locus for grain yield in an elite rice restorer R998
Scientific Reports
author_facet Manshan Zhu
Dilin Liu
Wuge Liu
Dan Li
Yilong Liao
Jinhua Li
Chongyun Fu
Fuhong Fu
Huijun Huang
Xueqin Zeng
Xiaozhi Ma
Feng Wang
author_sort Manshan Zhu
title QTL mapping using an ultra-high-density SNP map reveals a major locus for grain yield in an elite rice restorer R998
title_short QTL mapping using an ultra-high-density SNP map reveals a major locus for grain yield in an elite rice restorer R998
title_full QTL mapping using an ultra-high-density SNP map reveals a major locus for grain yield in an elite rice restorer R998
title_fullStr QTL mapping using an ultra-high-density SNP map reveals a major locus for grain yield in an elite rice restorer R998
title_full_unstemmed QTL mapping using an ultra-high-density SNP map reveals a major locus for grain yield in an elite rice restorer R998
title_sort qtl mapping using an ultra-high-density snp map reveals a major locus for grain yield in an elite rice restorer r998
publisher Nature Publishing Group
series Scientific Reports
issn 2045-2322
publishDate 2017-09-01
description Abstract To dissect the genetic basis of yield formation in restorer line of hybrid rice, we conducted QTL analysis for 6 yield traits including panicles per plant (PPP), grains per panicle (GPP), grain yield per plant (GY), thousand-grain weight (TGW), above-ground biomass (AGB), and harvest index (HI) using SNP markers in a recombinant inbred lines (RILs) population derived from a cross between a tropical japonica inbred Francis and an elite indica restorer Guanghui 998 (R998). A total of 26 QTLs were detected using a high density genetic map consisting of 3016 bin markers. Nineteen out of the 26 QTL alleles from R998 had a beneficial effect on yield traits. Most of the QTLs were co-located with previously reported rice QTLs. qAGB6 and qHI9, controlling AGB and HI respectively, were detected as novel QTLs. Four QTLs for GY were repeatedly detected across two years, with all the beneficial alleles from R998. Notably, qGY8 explained over 20% of the yield variance in both years. Moreover, qGY8 together with qTGW8 and qHI8 formed a QTL cluster. Markers tightly linked with qGY8 were developed. Cloning of qGY8 will facilitate its further exploitation in high-yield breeding.
url https://doi.org/10.1038/s41598-017-10666-7
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