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Mapping QTL for stay-green and agronomic traits in wheat under diverse water regimes

Author: Shenkui Shi
Author: Farooq I. Azam
Author: Li, Huihui
Author: Xiaoping Chang
Author: Baoyun Li
Author: Ruilian Jing
Year: 2017
ISSN: 0014-2336 (Paper)
ISSN: 1573-5060 (Online)
URI: https://hdl.handle.net/10883/19479
Abstract: Wheat (Triticum aestivum L.) yield is directly proportional to physio-morphological traits. A high-density genetic map consisting of 2575 markers was used for mapping QTL controlling stay-green and agronomic traits in wheat grown under four diverse water regimes. A total of 108 additive QTL were identified in target traits. Among them, 28 QTL for chlorophyll content (CC) were detected on 11 chromosomes, 43 for normalized difference vegetation index (NDVI) on all chromosomes except 5B, 5D, and 7D, five for spikes per plant (NSP) on different chromosomes, nine for plant height (PH) on four chromosomes, and 23 for thousand-kernel weight (TKW) on 11 chromosomes. Considering all traits, the phenotypic variation explained (PVE) ranged from 3.61 to 41.62%. A major QTL, QNDVI.cgb-5A.7, for NDVI with a maximum PVE of 20.21%, was located on chromosome 5A. A stable and major PH QTL was observed on chromosome 4D with a PVE close to 40%. Most distances between QTL and corresponding flanking markers were less than 1 cM, and approximately one-third of the QTL coincided with markers. Each of 16 QTL clusters on 10 chromosomes controlled more than one trait and therefore could be regarded as pleiotropic regions in response to different water regimes. Forty-one epistatic QTL were identified for all traits having PVE of 6.00 to 25.07%. Validated QTL closely linked to flanking markers will be beneficial for marker-assisted selection in improving drought-tolerance in wheat.
Format: PDF
Language: English
Publisher: Springer
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the suitable license for that purpose.
Type: Article
Place of Publication: Netherlands
Issue: 11
Volume: 213
DOI: 10.1007/s10681-017-2002-5
Agrovoc: DROUGHT TOLERANCE
Agrovoc: TRITICUM AESTIVUM
Agrovoc: QUANTITATIVE TRAIT LOCI
Agrovoc: SINGLE NUCLEOTIDE POLYMORPHISM
Related Datasets: https://static-content.springer.com/esm/art%3A10.1007%2Fs10681-017-2002-5/MediaObjects/10681_2017_2002_MOESM1_ESM.pdf
Related Datasets: https://static-content.springer.com/esm/art%3A10.1007%2Fs10681-017-2002-5/MediaObjects/10681_2017_2002_MOESM2_ESM.xlsx
Related Datasets: https://static-content.springer.com/esm/art%3A10.1007%2Fs10681-017-2002-5/MediaObjects/10681_2017_2002_MOESM3_ESM.xlsx
Related Datasets: https://static-content.springer.com/esm/art%3A10.1007%2Fs10681-017-2002-5/MediaObjects/10681_2017_2002_MOESM4_ESM.xlsx
Related Datasets: https://static-content.springer.com/esm/art%3A10.1007%2Fs10681-017-2002-5/MediaObjects/10681_2017_2002_MOESM5_ESM.xlsx
Journal: Euphytica


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  • Wheat
    Wheat - breeding, phytopathology, physiology, quality, biotech

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