QTL Mapping of Chalkiness Using Chromosome Single Segment Substituted Lines in Rice

doi:10.7668/hbnxb.2015.01.001

Abstract

Abstract: In order to evaluate and mapping QTL associated with Chalkiness and then analysis their genetic effects, 84 chromosome single segment substitution lines (CSSSLs) were derived from the cross of Guangluai 4 as recipient line and Nipponbare as donor line.One-way ANOVA and Dunnett's test were employed to detect 36 QTLs (P≤0.001) associated with chalkiness, in which 19 were degree of endosperm chalkiness (DEC) related QTLs.The additive effects ranged from-6.44 to 12.86, and the additive effect contributions were-34.04%-68.02%.The other 17 QTLs were associated with percentage of grain with chalkiness (PGWC).The additive effects of them were-7.32-3.63 and the additive effect contribution were-8.07%-4.00%.These results provided useful information for fine mapping and cloning related QTLs, and will facilitate the improvement of rice appearance quality.

Key words: Rice, Degree of endosperm chalkiness, Percentage of grain with chalkiness, Quantitative trait loci, Chromosome single segment substitution lines, Substitution mapping

CLC Number:

S511.03

TAO Ya-jun, XU Meng-bin, WANG Fei, CHEN Da, ZHOU Yong, LIANG Guo-hua. QTL Mapping of Chalkiness Using Chromosome Single Segment Substituted Lines in Rice[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2015, 30(1): 1-8. doi: 10.7668/hbnxb.2015.01.001.

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