Identification of qRL7, a major quantitative trait locus associated with rice root length in hydroponic conditions
Root system development is an important target for improving yield in rice. Active roots that can take up nutrients more efficiently are essential for improving grain yield. In this study, we performed quantitative trait locus (QTL) analyses using 215 recombinant inbred lines derived from a cross be...
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| Format: | Online |
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Japanese Society of Breeding
2013
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| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3770553/ |
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pubmed-37705532013-11-22 Identification of qRL7, a major quantitative trait locus associated with rice root length in hydroponic conditions Wang, Huimin Xu, Xiaoming Zhan, Xiaodeng Zhai, Rongrong Wu, Weiming Shen, Xihong Dai, Gaoxing Cao, Liyong Cheng, Shihua Articles Root system development is an important target for improving yield in rice. Active roots that can take up nutrients more efficiently are essential for improving grain yield. In this study, we performed quantitative trait locus (QTL) analyses using 215 recombinant inbred lines derived from a cross between Xieqingzao B (XB), a maintainer line with short roots and R9308, a restorer line with long roots. Only a QTLs associated with root length were mapped on chromosomes 7. The QTL, named qRL7, was located between markers RM3859 and RM214 on chromosome 7 and explained 18.14–18.36% of the total phenotypic variance evaluated across two years. Fine mapping of qRL7 using eight BC3F3 recombinant lines mapped the QTL to between markers InDel11 and InDel17, which delimit a 657.35 kb interval in the reference cultivar Nipponbare. To determine the genotype classes for the target QTL in these BC3F3 recombinants, the root lengths of their BC3F4 progeny were investigated, and the result showed that qRL7 plays a crucial role in root length. The results of this study will increase our understanding of the genetic factors controlling root architecture, which will help rice breeders to breed varieties with deep, strong and vigorous root systems. Japanese Society of Breeding 2013-09-01 2013-09 /pmc/articles/PMC3770553/ /pubmed/24273421 http://dx.doi.org/10.1270/jsbbs.63.267 Text en Copyright © 2013 by JAPANESE SOCIETY OF BREEDING http://creativecommons.org/licenses/by-nc-nd/3.0 This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
| repository_type |
Open Access Journal |
| institution_category |
Foreign Institution |
| institution |
US National Center for Biotechnology Information |
| building |
NCBI PubMed |
| collection |
Online Access |
| language |
English |
| format |
Online |
| author |
Wang, Huimin Xu, Xiaoming Zhan, Xiaodeng Zhai, Rongrong Wu, Weiming Shen, Xihong Dai, Gaoxing Cao, Liyong Cheng, Shihua |
| spellingShingle |
Wang, Huimin Xu, Xiaoming Zhan, Xiaodeng Zhai, Rongrong Wu, Weiming Shen, Xihong Dai, Gaoxing Cao, Liyong Cheng, Shihua Identification of qRL7, a major quantitative trait locus associated with rice root length in hydroponic conditions |
| author_facet |
Wang, Huimin Xu, Xiaoming Zhan, Xiaodeng Zhai, Rongrong Wu, Weiming Shen, Xihong Dai, Gaoxing Cao, Liyong Cheng, Shihua |
| author_sort |
Wang, Huimin |
| title |
Identification of qRL7, a major quantitative trait locus associated with rice root length in hydroponic conditions |
| title_short |
Identification of qRL7, a major quantitative trait locus associated with rice root length in hydroponic conditions |
| title_full |
Identification of qRL7, a major quantitative trait locus associated with rice root length in hydroponic conditions |
| title_fullStr |
Identification of qRL7, a major quantitative trait locus associated with rice root length in hydroponic conditions |
| title_full_unstemmed |
Identification of qRL7, a major quantitative trait locus associated with rice root length in hydroponic conditions |
| title_sort |
identification of qrl7, a major quantitative trait locus associated with rice root length in hydroponic conditions |
| description |
Root system development is an important target for improving yield in rice. Active roots that can take up nutrients more efficiently are essential for improving grain yield. In this study, we performed quantitative trait locus (QTL) analyses using 215 recombinant inbred lines derived from a cross between Xieqingzao B (XB), a maintainer line with short roots and R9308, a restorer line with long roots. Only a QTLs associated with root length were mapped on chromosomes 7. The QTL, named qRL7, was located between markers RM3859 and RM214 on chromosome 7 and explained 18.14–18.36% of the total phenotypic variance evaluated across two years. Fine mapping of qRL7 using eight BC3F3 recombinant lines mapped the QTL to between markers InDel11 and InDel17, which delimit a 657.35 kb interval in the reference cultivar Nipponbare. To determine the genotype classes for the target QTL in these BC3F3 recombinants, the root lengths of their BC3F4 progeny were investigated, and the result showed that qRL7 plays a crucial role in root length. The results of this study will increase our understanding of the genetic factors controlling root architecture, which will help rice breeders to breed varieties with deep, strong and vigorous root systems. |
| publisher |
Japanese Society of Breeding |
| publishDate |
2013 |
| url |
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3770553/ |
| _version_ |
1612010961025105920 |