Genetic diversity and population structure of bread wheat varieties grown in Bulgaria based on microsatellite and phenotypic analyses

Determining the genetic diversity and population structure of the modern hexaploid wheat varieties currently grown in Bulgaria is fundamental for selection of genotypes with desirable traits resilient under climatic fluctuations and development of successful crop improvement programmes. In this stud...

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Autores principales:	Stefan Tsonev, Nikolai Kirilov Christov, Gallina Mihova, Anna Dimitrova, Elena Georgieva Todorovska
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	bread wheat (t. aestivum l.) genetic and phenotypic diversity population structure geographical pattern ssr markers Biotechnology TP248.13-248.65
Acceso en línea:	https://doaj.org/article/2c8f067d816a4da19fe0ec674fb4ad78
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spelling	oai:doaj.org-article:2c8f067d816a4da19fe0ec674fb4ad782021-11-17T14:21:55ZGenetic diversity and population structure of bread wheat varieties grown in Bulgaria based on microsatellite and phenotypic analyses1310-28181314-353010.1080/13102818.2021.1996274https://doaj.org/article/2c8f067d816a4da19fe0ec674fb4ad782021-01-01T00:00:00Zhttp://dx.doi.org/10.1080/13102818.2021.1996274https://doaj.org/toc/1310-2818https://doaj.org/toc/1314-3530Determining the genetic diversity and population structure of the modern hexaploid wheat varieties currently grown in Bulgaria is fundamental for selection of genotypes with desirable traits resilient under climatic fluctuations and development of successful crop improvement programmes. In this study, simple sequence repeat (SSR) markers were used to characterize a population of 117 modern wheat varieties (Triticum aestivum L.) from Bulgaria and several Western, Central and Eastern European countries. The genetic diversity was higher in the Western and Central European varieties than in the Bulgarian and the remaining Eastern European ones. Model-based population structure analysis defined 2 sub-populations (K = 2) dividing the Central and Western European varieties from the Bulgarian ones. Subsequent genetic structure analysis at K = 3 revealed an additional separation of the Bulgarian varieties in two distinct sub-populations. The phenotypic diversity among the varieties was evaluated in the fields of Dobrudzha Agricultural Institute, G. Toshevo in North-Eastern Bulgaria for three consecutive years. The distribution of the varieties in the biplot analysis in terms of grain yield and its components revealed differences in their adaptation to the agro-climatic conditions of North Bulgaria according to their geographical origin. These results and the prevalence of specific SSR alleles in the sub-populations suggest distinct adaptive mechanisms to specific agro-ecological regions. The data will be of interest for both breeders and farmers and could serve as a basis for wheat improvement programmes and further association mapping for important agronomic traits expressed under different environmental conditions. Supplemental data for this article is available online at https://doi.org/10.1080/13102818.2021.1996274 .Stefan TsonevNikolai Kirilov ChristovGallina MihovaAnna DimitrovaElena Georgieva TodorovskaTaylor & Francis Grouparticlebread wheat (t. aestivum l.)genetic and phenotypic diversitypopulation structuregeographical patternssr markersBiotechnologyTP248.13-248.65ENBiotechnology & Biotechnological Equipment, Vol 35, Iss 1, Pp 1520-1533 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bread wheat (t. aestivum l.) genetic and phenotypic diversity population structure geographical pattern ssr markers Biotechnology TP248.13-248.65
spellingShingle	bread wheat (t. aestivum l.) genetic and phenotypic diversity population structure geographical pattern ssr markers Biotechnology TP248.13-248.65 Stefan Tsonev Nikolai Kirilov Christov Gallina Mihova Anna Dimitrova Elena Georgieva Todorovska Genetic diversity and population structure of bread wheat varieties grown in Bulgaria based on microsatellite and phenotypic analyses
description	Determining the genetic diversity and population structure of the modern hexaploid wheat varieties currently grown in Bulgaria is fundamental for selection of genotypes with desirable traits resilient under climatic fluctuations and development of successful crop improvement programmes. In this study, simple sequence repeat (SSR) markers were used to characterize a population of 117 modern wheat varieties (Triticum aestivum L.) from Bulgaria and several Western, Central and Eastern European countries. The genetic diversity was higher in the Western and Central European varieties than in the Bulgarian and the remaining Eastern European ones. Model-based population structure analysis defined 2 sub-populations (K = 2) dividing the Central and Western European varieties from the Bulgarian ones. Subsequent genetic structure analysis at K = 3 revealed an additional separation of the Bulgarian varieties in two distinct sub-populations. The phenotypic diversity among the varieties was evaluated in the fields of Dobrudzha Agricultural Institute, G. Toshevo in North-Eastern Bulgaria for three consecutive years. The distribution of the varieties in the biplot analysis in terms of grain yield and its components revealed differences in their adaptation to the agro-climatic conditions of North Bulgaria according to their geographical origin. These results and the prevalence of specific SSR alleles in the sub-populations suggest distinct adaptive mechanisms to specific agro-ecological regions. The data will be of interest for both breeders and farmers and could serve as a basis for wheat improvement programmes and further association mapping for important agronomic traits expressed under different environmental conditions. Supplemental data for this article is available online at https://doi.org/10.1080/13102818.2021.1996274 .
format	article
author	Stefan Tsonev Nikolai Kirilov Christov Gallina Mihova Anna Dimitrova Elena Georgieva Todorovska
author_facet	Stefan Tsonev Nikolai Kirilov Christov Gallina Mihova Anna Dimitrova Elena Georgieva Todorovska
author_sort	Stefan Tsonev
title	Genetic diversity and population structure of bread wheat varieties grown in Bulgaria based on microsatellite and phenotypic analyses
title_short	Genetic diversity and population structure of bread wheat varieties grown in Bulgaria based on microsatellite and phenotypic analyses
title_full	Genetic diversity and population structure of bread wheat varieties grown in Bulgaria based on microsatellite and phenotypic analyses
title_fullStr	Genetic diversity and population structure of bread wheat varieties grown in Bulgaria based on microsatellite and phenotypic analyses
title_full_unstemmed	Genetic diversity and population structure of bread wheat varieties grown in Bulgaria based on microsatellite and phenotypic analyses
title_sort	genetic diversity and population structure of bread wheat varieties grown in bulgaria based on microsatellite and phenotypic analyses
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/2c8f067d816a4da19fe0ec674fb4ad78
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Genetic diversity and population structure of bread wheat varieties grown in Bulgaria based on microsatellite and phenotypic analyses

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