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The rice endosperm amylopectin biosynthesis process, the soluble starch synthase gene SS II a, SS, III a plays an important role in the decision. Great significance to guide the improvement of rice quality in uncovering the soluble starch synthase gene function allele association analysis of soluble starch synthase gene and rice quality. In this paper, the allele-specific PCR method, 230 different rice varieties, based on existing research in this laboratory, the soluble starch synthase gene SS II a SS Ⅲ a, 16 SNPs base variation type grain quality traits association conducted the analysis, the main results are as follows: 1 SS Ⅱ a, SS Ⅲ a gene on the 16 SNPs bit point of detection (1) detected out of 230 rice varieties SS Ⅱ α gene 4424/4425, 4293,3894,28344 a SNPs base variation on the type loci, 4 SNPs in 230 rice varieties in the main base type were: GC, G, A, C,. (2) detect the base variation on the type of the 230 rice varieties SS III α gene 82,235,2409,2909,4074,4117,4342,4898,5582,5727,5981,803412 a SNPs sites in 12 SNPs of 230 rice varieties, the main type of the nucleotide, respectively: C, G, A, C, G, T, G, T, C, C, C, C. 2 SS Ⅱ a, composed of SS Ⅲ a gene of the 16 SNPs haplotype analysis by SS Ⅱ a, SS Ⅲ a gene 16 SNP-bit point do phylogenetic tree analysis of SS Ⅱ α gene 4 SNP bit point composed of 14 kinds of haplotype types, SS Ⅲ α gene 12 SNP loci 67 haplotypes type. 3 rice appearance and cooking qualities of determination of 230 rice varieties, the roughness varied between 69.59% -85.22%; 9522 of Hexie W3668, IR58, 131 rice varieties brown rice rate of 80%. Milled rice rate between 21% -73%, Change, W3668, Jigen 106, imitation wild 78-707, IR13423 18 rice varieties milled rice rate over 70%. 230 rice varieties, gel consistency between 21mm-120mm, big variations; Suyunuo Kendao japonica waxy 0488, tin rice, town Indica 232 135 rice varieties gel consistency is more than 60mm. The yellow silk Gui accounting alkali digestion value reaches a maximum of 7.0 for 13 rice varieties IR13423, IR1529, IR2031, alkali digestion value of other varieties in between 1.25-6.92 level. In addition to the 26 glutinous rice varieties and other varieties of amylose content between 9% -32%. R084, Mirukikuin, T461, 98 varieties of rice varieties for low amylose content. 4 SS Ⅱ a, SS Ⅲ a gene with rice quality of association analysis of relational analysis method analysis of the soluble starch synthase gene SS Ⅱ a, SS Ⅲ a and rice quality of relevance, SS Ⅱ α gene 4 SNP bit point detection to 3894 points and 2834 The sites exist very significantly associated with brown rice rate, 3894 points and amylose content exists a significant correlation. 4424/4425, 3894,2834 locus alkali spreading value highly significant association between. Wherein, the point is A, and 2834 points for the C type of nucleotide 3894 having improved rate effect in brown rice. 4424/4425 for TT base type has the effect of alkali spreading value. 3894 point is A, and 2834 points for the C type of the nucleotide having the effect to improve the alkali spreading value. 3894 points for the G nucleotide type to improve the effect of the amylose content. 12 SS Ⅲ α gene SNP loci detected 4074 points and 5981 points and milled rice rate is significantly associated with the the 235,2409,2909 sites amylose content exists a significant correlation. Significant association between 235 points and gel consistency. Significant association between 2909 points and alkali spreading value. 4074 points for the A and 5981 points for T rice varieties has the effect of milled rice. 235 points for A, 2409 sites for loci A and 2909 A rice varieties having the effect to improve the amylose content. 235 rice varieties G has the effect of improving the gel consistency, and 2909 points for the C's rice varieties have the effect of alkali spreading value.
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