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Original Research ARTICLE Provisionally accepted The full-text will be published soon. Notify me

Front. Plant Sci. | doi: 10.3389/fpls.2019.01531

Unlocking the genetic diversity and population structure of a wild gene source of wheat, Ae. biuncialis Vis., and its relationship with the heading time

 László Ivanizs1, István Monostori1,  András Farkas1, Mária Megyeri1,  Péter Mikó1,  Edina Türkösi1,  Eszter Gaál1, Andrea Lenykó-Thegze1,  Kitti Szőke-Pázsi1,  Éva Szakács1,  Eva Darko1, Tibor Kiss1, Andrzej Kilian2 and  István Molnár1, 3*
  • 1Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Hungary
  • 2Diversity Arrays Technology, Australia
  • 3Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Czechia

Understanding the genetic diversity of Aegilops biuncialis, a valuable source of agronomical useful genes, may significantly facilitate the introgression breeding of wheat. The genetic diversity and population structure of 86 Ae. biuncialis genotypes were investigated by 32700 DArT markers with the simultaneous application of three statistical methods - Neigbour Joining clustering, Principal Coordinate Analysis and the Bayesian approach to classification. The collection of Ae. biuncialis accessions was divided into five groups that correlated well with their eco-geographic habitat: A (North Africa), B (mainly from Balkans), C (Kosovo and Near East), D (Turkey, Crimea and Peloponnese) and E (Azerbaijan and the Levant region). The diversity between the Ae. biuncialis accessions for a phenological trait (heading time), which is of decisive importance in the adaptation of plants to different eco-geographical environments, was studied over three years. A comparison of the intraspecific variation in the heading time trait by means of ANOVA and Principal Component Analysis revealed four phenotypic categories showing association with the genetic structure and geographic distribution, except for minor differences. The detailed exploration of genetic and phenologic divergence provides an insight into the adaptation capacity of Ae. biuncialis, identifying promising genotypes that could be utilized for wheat improvement.

Keywords: Ae biuncialis, genetic diversity, DArTseq markers, population structure, hierarchical clustering, Heading time

Received: 23 Aug 2019; Accepted: 01 Nov 2019.

Copyright: © 2019 Ivanizs, Monostori, Farkas, Megyeri, Mikó, Türkösi, Gaál, Lenykó-Thegze, Szőke-Pázsi, Szakács, Darko, Kiss, Kilian and Molnár. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

* Correspondence: Mx. István Molnár, Agricultural Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Martonvásár, Hungary, molnar.istvan@agrar.mta.hu