Characterizing the Saltol quantitative trait locus for salinity tolerance in rice
Article
Article Title | Characterizing the Saltol quantitative trait locus for salinity tolerance in rice |
---|---|
ERA Journal ID | 211316 |
Article Category | Article |
Authors | Thomson, Michael J. (Author), de Ocampo, Marjorie (Author), Egdane, James (Author), Rahman, M. Akhlasur (Author), Sajise, Andres Godwin (Author), Adorada, Dante L. (Author), Tumimbang-Raiz, Ellen (Author), Blumwald, Eduardo (Author), Seraj, Zeba I. (Author), Singh, Rakesh K. (Author), Gregorio, Glenn B. (Author) and Ismail, Abdelbagi M. (Author) |
Journal Title | Rice |
Journal Citation | 3 (2-3), pp. 148-160 |
Number of Pages | 12 |
Year | 2010 |
Place of Publication | United States |
ISSN | 1939-8425 |
1939-8433 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s12284-010-9053-8 |
Web Address (URL) | https://thericejournal.springeropen.com/articles/10.1007/s12284-010-9053-8 |
Abstract | This study characterized Pokkali-derived quantitative trait loci (QTLs) for seedling stage salinity tolerance in preparation for use in marker-assisted breeding. An analysis of 100 SSR markers on 140 IR29/Pokkali recombinant inbred lines (RILs) confirmed the location of the Saltol QTL on chromosome 1 and identified additional QTLs associated with tolerance. Analysis of a series of backcross lines and near-isogenic lines (NILs) developed to better characterize the effect of the Saltol locus revealed that Saltol mainly acted to control shoot Na +/K + homeostasis. Multiple QTLs were required to acquire a high level of tolerance. Unexpectedly, multiple Pokkali alleles at Saltol were detected within the RIL population and between backcross lines, and representative lines were compared with seven Pokkali accessions to better characterize this allelic variation. Thus, while the Saltol locus presents a complex scenario, it provides an opportunity for markerassisted backcrossing to improve salt tolerance of popular varieties followed by targeting multiple loci through QTL pyramiding for areas with higher salt stress. |
Keywords | allelic variation; MABC; near isogenic lines; rice; salt stress; saltol QTL; |
ANZSRC Field of Research 2020 | 300406. Crop and pasture improvement (incl. selection and breeding) |
Byline Affiliations | International Rice Research Institute, Philippines |
University of California, United States | |
University of Dhaka, Bangladesh | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q419q/characterizing-the-saltol-quantitative-trait-locus-for-salinity-tolerance-in-rice
Download files
965
total views130
total downloads2
views this month1
downloads this month