RFLP MAPPING OF MAJOR AND MINOR GENES FOR IMPORTANT AGRONOMIC CHARACTERS IN RICE

A molecular genetic map with 233 RFLP markers which covered about 2070 cM of rice genome was constructed based on a doubled haploid (DH) pop ulation derived from anther culture of a cross between;an indica varie ty Gui630 and a japonica variety 02428. Quantitative trait loci (QTLs) for agronomic characters such as number of panicles, heading date, pl ant height, number of spikelets, number of grains, fertility and 1 000 -grain weight were analyzed using interval mapping approach. 8 major g enes and 29 minor genes were identified associating with these traits. The results also indicated that great phenotypic difference between p arents was profitable in detection of major genes.