作物学报Issue(9)：1695-1701,7.DOI:10.3724/SP.J.1006.2014.011695
小麦阿拉伯木聚糖含量的QTL分析及其与品质性状的关系
QTL Mapping for Arabinoxylans Content and Its Relationship with Processing Quality in Common Wheat
摘要
Abstract
Arabinoxylans (AX) are the hydrophilic nonstarch polysaccharides in wheat grain, and they play a critical role in food processing and nutrition quality. Quantitative trait loci (QTLs) for water-extractable (WE-AX) and total AX (TOT-AX) contents were identified and mapped using 240 recombinant inbred lines (RILs, F2:6) derived from the cross between PH82-2 and Neixiang 188. Besides, relationships between WE-AX and TOT-AX contents and protein content, Mixograph and Rapid Viscosity Analyzer (RVA) parameters were evaluated. Inclusive composite interval mapping identified five QTLs for TOT-AX content on chromo-somes 1B, 4B, 5B, 5D, and 6B, which explained 5.6%-18.7%of the phenotypic variations. Five QTLs associated with WE-AX content were mapped on chromosomes 1A, 1B, 5B, 6B, and 7A, explaining 4.3%-34.9%of the phenotypic variation. QTLs for TOT-AX content on chromosomes 1B, 5B, and 6B shared identical marker intervals with those for WE-AX content. 1BL/1RS translocation affected both TOT-AX and WE-AX contents, whereas, grain hardness only affected WE-AX content. TOT-AX con-tent had significant correlations with RVA parameters including peak viscosity, breakdown, final viscosity, setback, and Chinese White Salted Noodle quality traits (springness and flavor), but the correlation coefficients were influenced by 1BL/1RS transloca-tion and the type of grain hardness.关键词
普通小麦/阿拉伯木聚糖/QTL/1BL/1RS易位/品质性状Key words
Common wheat/Arabinoxylans/QTL/1BL/1RS translocation/Processing quality引用本文复制引用
杨莉,黄玉莲,常萍,阎俊,张业伦,夏先春,田宇兵,何中虎,张勇..小麦阿拉伯木聚糖含量的QTL分析及其与品质性状的关系[J].作物学报,2014,(9):1695-1701,7.基金项目
本研究由中国农业科学院作物科学研究所中央级公益性科研院所基本科研业务费专项资金,国家高技术研究发展计划(863计划)项目(2012AA10A308)和中国农业科学院创新工程项目资助。 （863计划）
