Quantitative trait loci for agronomic traits in tetraploid wheat for enhancing grain yield in Kazakhstan environments

Autor:	Saule Abugalieva, Marco Maccaferri, Roberto Tuberosa, Nicola Pecchioni, Shynar Anuarbek, Giovanni Laidò, Yerlan Turuspekov
Přispěvatelé:	Anuarbek S., Abugalieva S., Pecchioni N., Laido G., Maccaferri M., Tuberosa R., Turuspekov Y.
Jazyk:	angličtina
Rok vydání:	2020
Předmět:	0106 biological sciences 0301 basic medicine Germplasm Biplot Steppe Plant genetics Plant Science 01 natural sciences Linkage Disequilibrium Geographical Locations Cultivar Genome Plant Genome-Wide Association Study Grassland Kazakhstan Polymorphism Single Nucleotide Tetraploidy Triticum Plant Breeding Quantitative Trait Loci Selection Genetic Multidisciplinary geography.geographical_feature_category Genome Plant Anatomy Eukaryota food and beverages Agriculture Genomics Single Nucleotide Plants Europe Wheat Seeds Medicine Research Article Asia Science Quantitative trait locus Biology Polyploidy Molecular Genetics 03 medical and health sciences Genetic Genetics Genome-Wide Association Studies Plant breeding Grasses Polymorphism Domestication Molecular Biology Selection geography Organisms Biology and Life Sciences Computational Biology Human Genetics Plant Genome Analysis Agronomy 030104 developmental biology Genetic Loci People and Places Departures from Diploidy 010606 plant biology & botany
Zdroj:	PLoS ONE, Vol 15, Iss 6, p e0234863 (2020) PLoS ONE
ISSN:	1932-6203
Popis:	Durum wheat (Triticum turgidum L. ssp. durum) is one of the top crops in Kazakhstan, where it is cultivated in different ecological niches, mainly at higher latitudes in the steppe zone of the northern region. Therefore, local breeding programs for durum wheat are primarily focused on selection for high productivity in Northern Kazakhstan based on the introduction of promising foreign germplasm and the adoption of marker-assisted selection. In this study, a world tetraploid wheat collection consisted of 184 primitive and domesticated accessions, which were previously genotyped using 16,425 polymorphic SNP markers, was field-tested in Northern and South-eastern Kazakhstan. The field tests have allowed the identification of 80 durum wheat promising lines in Northern Kazakhstan in comparison with a local standard cultivar. Also, GGE (Genotype and Genotype by Environment) biplot analyses for yield performance revealed that accessions of T. dicoccum, T. carthlicum, and T. turanicum also have potential to improve durum wheat yield in the region. The genome-wide association study (GWAS) has allowed the identification of 83 MTAs (marker-trait associations) for heading date, seed maturation time, plant height, spike length, number of fertile spikes, number of kernels per spike, and thousand kernel weight. The comparison of the 83 identified MTAs with those previously reported in GWAS for durum wheat suggests that 38 MTAs are presumably novel, while the co-localization of a large number of MTAs with those previously published confirms the validity of the results of this study. The MTAs reported herewith will provide the opportunity to implement marker-assisted selection in ongoing durum wheat breeding projects targeting higher productivity in the region.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74b95cda42127fd1b41b2eadfc44da4e https://doaj.org/article/34b081c3806c46cb8ac56c727fe1a94b Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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