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- W2977915306 abstract "Abstract Genetic control of grain yield and phenology was examined in the Excalibur/Kukri doubled haploid mapping population grown in 32 field experiments across the climatic zones of southern Australia, India and north-western Mexico where the wheat crop experiences drought and heat stress. A total of 128 QTL were identified for four traits: grain yield, thousand grain weight (TGW), days to heading and grain filling duration. These QTL included 24 QTL for yield and 27 for TGW, showing significant interactions with the environment ( Q * E ). We also identified 14 QTL with a significant, small main effects on yield across environments. The study focussed on a region of chromosome 1B where two main effect QTL were found for yield and TGW without the confounding effect of phenology. Excalibur was the source of favourable alleles: QYld.aww - 1B.2 with a peak at 149.5–150.1 cM and QTgw.aww - 1B at 168.5–171.4 cM. We developed near isogenic lines (NIL) for the interval including QYld.aww - 1B.2 and QTgw.aww - 1B and evaluated them under semi-controlled conditions. Significant differences in four pairs of NIL were observed for grain yield but not for TGW, confirming a positive effect of the Excalibur allele for QYld.aww - 1B.2 . The interval containing QYld.aww - 1B.2 was narrowed down to 2.9 cM which corresponded to a 2.2 Mbp genomic region on the chromosome 1B genomic reference sequence of cv. Chinese Spring and contained 39 predicted genes." @default.
- W2977915306 created "2019-10-10" @default.
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- W2977915306 date "2019-10-04" @default.
- W2977915306 modified "2023-10-11" @default.
- W2977915306 title "QTL analysis and fine mapping of a QTL for yield-related traits in wheat grown in dry and hot environments" @default.
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- W2977915306 doi "https://doi.org/10.1007/s00122-019-03454-6" @default.
- W2977915306 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7990757" @default.
- W2977915306 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/31586227" @default.
- W2977915306 hasPublicationYear "2019" @default.
- W2977915306 type Work @default.