Association mapping of rapid visco analyzer traits

Abstract

Abstract The viscous coefficient and amylose content are the important target for evaluating rice cooking and eating quality. In this study we got the genome-wide association analysis results of amylose content (AC) and parameters value of starch rapid visco analyzer (RVA) PKV, HPV, CPV, BDV, SBV, CSV, GT and PeT through 179 rice core germplasm materials. We detected 170 associated QTL locus all of the nine characters, including a number of the same QTL locus of control multiple traits on chromosome 1, 2, 5, 6, 7, 9 and 12. About 21 QTL locus have been reported related to starch synthesis genes in rice. Starch synthase (include straight-chain starch synthase genes (GBSS) and branched chain starch synthase genes(SS)) had effect on all traits. And three materials of NIP/ZS97 CSSL single segment, one material of ACC9/ZS97 CSSL single segment and one material of NIP/9311 CSSL single segment could confirm nine QTLs which effect on BDV, SBV, PKV and CSV were scanned by association analysis on chromosome 1、3、7 and 8. In the start stage of starch synthesis, participate in the regulation of glucose − 6 - phosphate (Glc6p) →glucose − 1 - (Glc1p) and phosphate Glc1p →UDPGlc way's gene GPT and PGM had a specificity effect on the traits of BDV and SBV, but had little effect on other traits.