자포니카 벼 품종의 SSR 다양서아과 몇가지 농업형질과의연관

Abstract

Diversity of 80 japonica rice cultivars was evaluated using 65 microsatellite or simple sequence repeat (SRs) markers.Sixty-five microsatelite markers representing 65 loci in the rice genome detected polymorphisms among the 80 cultivars andrevealed 289 alleles with a mean of 4.45 alleles per primer. The polymorphism information content (PIC) value ranged from 0.02 to0.86, with an average of 0.43. The 80 cultivars were clasified into nine groups by cluster analysis based on Nei's genetic distances.Also, the 80 cultivars were evaluated for five traits of agronomic importance including panicle number. One-way analysis of vari-ance was caried out to find out significant relationships betwen individual markers and phenotypes. Eight, five and thre markersshowed an asociation with panicle length, spikelets per panicle and 1,0 grain weight, respectively and this result needs to be con-firmed using a segregating population for these traits. This preliminary work provides the basis for a large scale evaluation ofmolecular diversity of germplasm.