QTL Analysis of Chlorophyll Fluorescence Parameters in Rice Seedlings under Salt Stress

By employing a recombinant inbred line(RIL) population consisting of 247 lines derived from an indica-indica cross Zhenshan 97B×Milyang 46,a linkage map consisting of 250 DNA markers was constructed for QTL mapping of chlorophyll fluorescence parameters under normal conditions and salt stress(0.7% NaCl).Seven QTLs for chlorophyll fluorescence parameters(Fo,Fm and ΦPSⅡ) of rice leaf were detected on chromosomes 1,4,5 and 11 under normal conditions and salt stress,explaining 5.98% to 10.74% of phenotypic variations.One QTL for Fm under normal conditions and one QTL for Fo under salt stress were located in the same interval CDO82-RG413 on chromosome 5,indicating the pleiotropism of this region.