In order to mine elite alleles of panicle angle trait and their carrier varieties in japonica rice, association analysis between SSR loci and panicle angle trait was performed by using genotyping data of 151 SSR markers on a natural population composed of 95 japonica varieties (58 landraces and 37 cultivars) with the general linear model in software of TASSEL. Linkage disequilibrium and population structure were firstly analyzed for the population.Linkage disequilibrium at different levels was detected not only among syntenic markers but also among nonsyntenic ones. The cultivar population had a higher level of linkage disequilibrium than that of the landrace population. Genetic structure analysis showed that the natural population was composed of 6 subpopulations. Fifteen SSR loci associated with the trait were detected and located on 10 chromosomes except chromosomes 4 and 7. The markers RM7598, RM3700, RM311 and RM1125 each could explain more than 10% of phenotypic variation. Twentythree elite alleles and their typical carrier materials were further screened out. Of the seven typical carrier materials, Xiushui 04 and Xiushui 79 carried more elite alleles.
NIU Fuan1,2, CHEN Lan1, ZHANG Hong1, YUAN Qin2, CHENG Can2, ZHOU Jihua2, HONG Delin1,*
. Mining Elite Alleles of Panicle Angle Trait in japonica Rice[J]. Chinese Journal OF Rice Science, 2013
, 27(4)
: 373
-380
.
DOI: 10.3969/j.issn.1001-7216.2013.04.006
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