Characterization and identification of cold tolerant near-isogenic lines in rice
Open Access
- 1 January 2012
- journal article
- Published by Japanese Society of Breeding in Breeding Science
- Vol. 62 (2), 196-201
- https://doi.org/10.1270/jsbbs.62.196
Abstract
To exploit the genetic mechanism of cold tolerance in rice, cold tolerant near-isogenic lines (NILs) were developed by backcrossing Kunmingxiaobaigu (KMXBG), reported to be the most cold-tolerant variety at the booting stage, as donor, with the cold sensitive Japanese commercial japonica variety, Towada. Comparisons of cold tolerance-related traits between five BC6F5 NILs and recurrent parent Towada under cold treatment and normal temperatures at the booting stage showed that the differences between the NILs and Towada were significant only for spikelet fertility-related traits. Analyses of cold tolerance in the NILs at the budding (germination), seedling and booting stages indicated both correlated effects and differences. Lines 1913-4 and 1916-1 showed strong and stable tolerance at all three stages. Whole genome marker screening showed that the proportion of genetic background recovery was more than 98%. Seventeen markers from KMXBG were introgressed in two or more NILs, and cold tolerance genes were possibly present in these marker regions. The NILs should be excellent materials for both rice improvement and map-based cloning of cold tolerance QTLs.Keywords
This publication has 20 references indexed in Scilit:
- Isothermal equation of state for gold with a He-pressure mediumPhysical Review B, 2008
- Identification and mapping of quantitative trait loci for cold tolerance at the booting stage in a japonica rice near-isogenic linePlant Science, 2007
- An SNP Caused Loss of Seed Shattering During Rice DomesticationScience, 2006
- Haplotype variation in structure and expression of a gene cluster associated with a quantitative trait locus for improved yield in riceGenome Research, 2006
- The map-based sequence of the rice genomeNature, 2005
- Cytokinin Oxidase Regulates Rice Grain ProductionScience, 2005
- Identification of Quantitative Trait Loci Controlling Cold Tolerance at the Reproductive Stage in Yunnan Landrace of Rice, KunmingxiaobaiguBreeding Science, 2004
- Mapping of Quantitative Trait Loci for Cold Tolerance in Weedy RiceBreeding Science, 2004
- Mapping Quantitative Trait Loci Controlling Cool-temperature Tolerance at Booting Stage in Temperate Japonica Rice.Breeding Science, 2001
- Molecular mapping of rice chromosomesTheoretical and Applied Genetics, 1988