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Mapping QTLs related to salinity tolerance of rice at the young seedling stage
Author(s) -
Lee S. Y.,
Ahn J. H.,
Cha Y. S.,
Yun D. W.,
Lee M. C.,
Ko J. C.,
Lee K. S.,
Eun M. Y.
Publication year - 2007
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.2007.01265.x
Subject(s) - seedling , biology , quantitative trait locus , oryza sativa , japonica , japonica rice , inbred strain , allele , salinity , population , agronomy , genotype , horticulture , botany , genetics , gene , ecology , demography , sociology
Using a population of recombinant inbred lines of the 164 genotypes derived from a cross between ‘Milyang 23’ (indica) and ‘Gihobyeo’ (japonica) in rice ( Oryza sativa L.), salt tolerance was evaluated at a young seedling stage in concentrations of 0.5% and 0.7% NaCl. Mapping quantitative trait loci (QTLs) related to salt tolerance was carried out by interval mapping using Qgene 3.0. Two QTLs ( qST1 and qST3 ) conferring salt tolerance at young seedling stage were mapped on chromosome 1 and 3, respectively, and explained 35.5–36.9% of the total phenotypic variation in 0.5% and 0.7% NaCl. The favourable allele of qST1 was contributed by ‘Gihobyeo’, and that of qST3 by ‘Milyang 23’. The results obtained in 0.5% and 0.7% NaCl for 2 years were similar in flanked markers and phenotypic variation.