QTL analysis of root vitality in a doubled-haploid population derived from anther culture of indica/japonica rice

Abstract

Root vitality in rice is important to the growth and development of every aboveground part. A doubled-haploid (DH) population derived from anther culture of ZYQ8/JX17 F 1 , a typical indica and japonica hybrid, was used in this study. Root vitality of 134 DH lines was detected by determining the reduction ability of TTC in the heading period. Root vitality isn’t correlated to root morphological characters. A QTL was detected between RG449 and RRF09_1 on chromosome 4. Its LOD score and variation were 2.59 and 10.4%, respectively. Its additive effect was –1.6245. This QTL was from ZYQ8.