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Mapping quantitative trait loci for sheath blight resistance in rice using double haploid population
Author(s) -
Xu Qun,
Yuan XiaoPing,
Yu HanYong,
Wang YiPing,
Tang ShengXiang,
Wei XingHua
Publication year - 2011
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.1439-0523.2010.01806.x
Subject(s) - quantitative trait locus , doubled haploidy , biology , population , ploidy , sheath blight , japonica , genetics , botany , gene , rhizoctonia solani , demography , sociology
With 2 figures and 1 tableAbstract This study used a double haploid (DH) population of ‘Maybelle’, a USA japonica variety susceptible to sheath blight (ShB), and ‘Baiyeqiu’, a Chinese indica landrace resistant to ShB, to identify quantitative trait loci (QTL) controlling rice ShB resistance. The DH population (251 lines) was inoculated with R. solani strain RH‐9. A molecular linkage map saturated with 227 markers was constructed. We detected a total of four QTL located on four different chromosomes (qShB1, qShB2, qShB3 and qShB5). The qShB1 QTL explained 8.9% of the phenotypic variation in 2007 and 13.2% in 2008.