Molecular mapping for seedling cold tolerance QTLs in rice

The quantitative trait loci(QTLs)for cold tolerance relative characters were identified with microsatellite markers.Ten QTLs located on chromosome1,3,4,5,6,8,9,11(two)and 12were detected for seedling height at different low temperature.Only 2 of these were detected at the same locus at four environments.1 was significant at three environments.6 were significant at two environments and 1 was significant at one environment.Seven QTLs located on chromosome 1(two),2(two),5,6,8were found for ow temperature chlorosis resistance and five QTLs located on chromosome 3,4,7,8,11resistant to chilling injury.The amount of variation explained by indivdual QTL ranged from 4.85%to 49.34%,There was no linkage relationship among the three characters.which indicates seediling cold tolerance is a complex character and is controlled by different QTLs.

Molecular mapping for seedling cold tolerance QTLs in rice

The quantitative trait loci (QTLs) for cold tolerance relative characters were identified with microsatellitemarkers. Ten QTLs located on chromosome 1, 3, 4, 5, 6, 8, 9, 11(two)and 12 were detected for seedling height atdifferent low temperature. Only 2 of these were detected at the same locus at four environments, 1 was significant atthree environments, 6 were significant at two environments and 1 was significant at one environment. Seven QTLslocated on chromosome 1(two), 2(two),5,6, 8 were found for low temperature chlorosis resistance and five QTLslocated on chromosome 3, 4, 7, 8, 11 resistant to chilling injury. The amount of variation explained by individual QTLranged from 4.85% to 49.34%. There was no linkage relationship among the three characters, which indicates seedlingcold tolerance is a complex character and is controlled by different QTLs.