Variations in phenological, physiological, plant architectural and yield-related traits, their associations with grain yield and genetic basis

dc.creatorYibo Li
dc.creatorFulu Tao
dc.creatorYuanfeng Hao
dc.creatorJingyang Tong
dc.creatorYonggui Xiao
dc.creatorHe Zhonghu
dc.creatorReynolds, M.P.
dc.date2023-04-28T00:20:17Z
dc.date2023-04-28T00:20:17Z
dc.date2023
dc.date.accessioned2023-07-17T20:10:33Z
dc.date.available2023-07-17T20:10:33Z
dc.identifierhttps://hdl.handle.net/10883/22583
dc.identifier10.1093/aob/mcad003
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7514326
dc.descriptionBackground and Aims: Physiological and morphological traits play essential roles in wheat (Triticum aestivum) growth and development. In particular, photosynthesis is a limitation to yield. Increasing photosynthesis in wheat has been identified as an important strategy to increase yield. However, the genotypic variations and the genomic regions governing morphological, architectural and photosynthesis traits remain unexplored. Methods: Here, we conducted a large-scale investigation of the phenological, physiological, plant architectural and yield-related traits, involving 32 traits for 166 wheat lines during 2018-2020 in four environments, and performed a genome-wide association study with wheat 90K and 660K single nucleotide polymorphism (SNP) arrays. Key Results: These traits exhibited considerable genotypic variations in the wheat diversity panel. Higher yield was associated with higher net photosynthetic rate (r = 0.41, P < 0.01), thousand-grain weight (r = 0.36, P < 0.01) and truncated and lanceolate shape, but shorter plant height (r = -0.63, P < 0.01), flag leaf angle (r = -0.49, P < 0.01) and spike number per square metre (r = -0.22, P < 0.01). Genome-wide association mapping discovered 1236 significant stable loci detected in the four environments among the 32 traits using SNP markers. Trait values have a cumulative effect as the number of the favourable alleles increases, and significant progress has been made in determining phenotypic values and favourable alleles over the years. Eleven elite cultivars and 14 traits associated with grain yield per plot (GY) were identified as potential parental lines and as target traits to develop high-yielding cultivars. Conclusions: This study provides new insights into the phenotypic and genetic elucidation of physiological and morphological traits in wheat and their associations with GY, paving the way for discovering their underlying gene control and for developing enhanced ideotypes in wheat breeding.
dc.description503-519
dc.languageEnglish
dc.publisherOxford University Press
dc.rightsCIMMYT 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
dc.rightsOpen Access
dc.source3
dc.source131
dc.source0305-7364
dc.sourceAnnals of botany
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectPhotosynthetic Traits
dc.subjectGENETICS
dc.subjectPHENOTYPES
dc.subjectPLANT BREEDING
dc.subjectQUANTITATIVE TRAIT LOCI
dc.subjectSINGLE NUCLEOTIDE POLYMORPHISM
dc.subjectWHEAT
dc.subjectGENETIC VARIATION
dc.subjectIDEOTYPES
dc.subjectYIELD POTENTIAL
dc.subjectWheat
dc.titleVariations in phenological, physiological, plant architectural and yield-related traits, their associations with grain yield and genetic basis
dc.typeArticle
dc.typePublished Version
dc.coverageUnited Kingdom


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