QTL Analysis of Starch Content in High-oil Maize Using Seed Trait QTL

doi:10.3969/j.issn.1000-7091.2012.02.019

Abstract

Abstract: F_2:3populations consisted of 284 plants were developed from the cross between a normal maize inbred 8984 and a high-oil maize inbred GY220，and a genetic linkage map including 185 SSR markers constructed?by (8984/GY220) F2population． The quantitative trait loci (QTL) of starch content were identified and their?effects were evaluated using SeedTraitQTL containing maternal effect． A total of seven QTL were detected in the F2:3?population，located on chromosome 5，8 and 10 respectively． Six QTLs showed partially dominant effects but qSTA83 showed additive． Contribution of single QTL to phenotypic variation varied from 5． 87% to 10． 93%，and total contributions of all QTLs were 53． 38%． The allele of all QTLs were contributed by the normal maize parent 8984． The?QTL qSTA5-2 with higher contribution could be used as the main objective QTL in fine mapping．

Key words: High-oil maize, Starch content, Seed Trait QTL, QTL analysis

CLC Number:

S513.03

LI Xue-hui, SHEN Shun-xian, LI Yu-ling, CAO Wen-mei, DU Hong. QTL Analysis of Starch Content in High-oil Maize Using Seed Trait QTL[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2012, 27(2): 97-99. doi: 10.3969/j.issn.1000-7091.2012.02.019.

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