SSR Diversity in Japonica Rice Cultivars and its Association to Several Traits

자포니카 벼 품종의 SSR 다양성과 몇 가지 농업형질과의 연관

Gwon, Su-Jin;An, Sang-Nak;Hong, Ha-Cheol;Hwang, Hong-Gu;Choe, Hae-Chun
권수진;안상낙;홍하철;황홍구;최해춘

  • Published : 20020000

Abstract

Diversity of 80 japonica rice cultivars was evaluated using 65 microsatellite or simple sequence repeat (SSRs) markers. Sixty-five microsatellite markers representing 65 loci in the rice genome detected polymorphisms among the 80 cultivars and revealed 289 alleles with a mean of 4.45 alleles per primer. The polymorphism information content (PIC) value ranged from 0.02 to 0.86, with an average of 0.43. The 80 cultivars were classified 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 variance was carried out to find out significant relationships between individual markers and phenotypes. Eight, five and three markers showed an association with panicle length, spikelets per panicle and 1,000 grain weight, respectively and this result needs to be confirmed using a segregating population for these traits. This preliminary work provides the basis for a large scale evaluation of molecular diversity of germplasm.

Keywords

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