摘要
为了给普通栽培小麦蛋白质和Fe、zn营养的改良提供参考依据，将来自欧洲的四倍体小麦栽培品种Langdon与源于以色列Gitit的野生二粒小麦G18-16杂交重组自交系F6代的152个家系种植于以色列希伯来大学不同年份的3个干旱和湿润环境（2005年干旱与湿润环境以及2007年湿润环境）下，并进行籽粒蛋白质、Fe和Zn单株产量的数量性状基因位点（QTL）分析。结果发现全部家系在3个不同环境下这三个性状均表现出宽广的遗传差异，共有22个籽粒蛋白质、Fe和Zn单株产量的QTL被分别定位在9条染色体上，LOD值为3．1～15．9，贡献率为2．3％～18％，8个QTL受到环境的影响。仅分布于2A和4A染色体上的籽粒Fe单株产量的QTL存在基因上位性影响。
The genetic and phenotypic basis for the yield of grain protein, Fe and Zn of one plant （GPY, GFeY and GZnY） was studied in tetraploid wheat population consisting of 152 F6 recombinant inbreed lines （RILs） derived from a cross between T. dicoccoides （acc ~ G18-16） and durum wheat cultivar （Langdon） grown under three different environmental conditions in The Hebrew University of Jerusalem in Israel, e.g. water-limited （dry）, well-watered （wet） environments in 2005, and well- watered （wet） environment in 2007. Wide genetic variation was found among RILs for GPY, GFeY and GZnY. A total of 22 QTLs on nine chromosomes associated with grain protein, Fe and Zn yield of one plant were detected, with a LOD score range of ca. 3.1 to 15.9, explaining phenotypic variation of 2.3% to 18%. Eight QTLs showed interactions with environmental conditions. A significant two-loci epistasis was only found between the QTLs in 2A and 4A controlling GFeY. The identified QTLs could be useful in future marker-assisted selection programs, facilitating the use of wild alleles for yield enhancement in elite wheat cultivars.
出处
《麦类作物学报》
CAS
CSCD
北大核心
2013年第6期1149-1155,共7页
Journal of Triticeae Crops
基金
四川省国际科技合作与交流研究计划项目(2012HH0041)
贵州省国际科技合作计划项目(黔科合外G字【2012】7011号)
国家国际科技合作专项(2013DFA32200)
