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Genetic variation of salt-stressed durum wheat (Triticum turgidum subsp. durum Desf.) genotypes under field conditions and gynogenetic capacity

Agriculture has new challenges against the climate change: the preservation of genetic resources and the rapid creation of new varieties better adapted to abiotic stress, specially salinity. In this context, the agronomic performance of 25 durum wheat (Triticum turgidum subsp. durum Desf.) genotypes...

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Autores principales: Ayed-Slama, Olfa, Bouhaouel, Imen, Chamekh, Zoubeir, Trifa, Youssef, Sahli, Ali, Ben Aissa, Nadhira, Slim-Amara, Hajer
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Academy of Scientific Research and Technology, Egypt 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6296626/
https://www.ncbi.nlm.nih.gov/pubmed/30647718
http://dx.doi.org/10.1016/j.jgeb.2017.11.004
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author Ayed-Slama, Olfa
Bouhaouel, Imen
Chamekh, Zoubeir
Trifa, Youssef
Sahli, Ali
Ben Aissa, Nadhira
Slim-Amara, Hajer
author_facet Ayed-Slama, Olfa
Bouhaouel, Imen
Chamekh, Zoubeir
Trifa, Youssef
Sahli, Ali
Ben Aissa, Nadhira
Slim-Amara, Hajer
author_sort Ayed-Slama, Olfa
collection PubMed
description Agriculture has new challenges against the climate change: the preservation of genetic resources and the rapid creation of new varieties better adapted to abiotic stress, specially salinity. In this context, the agronomic performance of 25 durum wheat (Triticum turgidum subsp. durum Desf.) genotypes (nineteen landraces and six improved varieties), cultivated in two semi-arid regions in the center area of Tunisia, were assessed. These sites (Echbika, 2.2 g l(−1); Barrouta, 4.2 g l(−1)) differ by their degree of salinity of the water irrigation. The results showed that most of the agronomic traits (e.g. spike per meter square, thousand kernels weight and grain yield) were reduced by salinity. Durum wheat landraces, Mahmoudi and Hmira, and improved varieties, Maali and Om Rabia showed the widest adaptability to different quality of irrigation water. Genotypes including Jneh Kotifa and Arbi were estimated as stable genotypes under adverse conditions. Thereafter, salt-tolerant (Hmira and Jneh Khotifa) and the most cultivated high-yielding (Karim, Razzak and Khiar) genotypes were tested for their gynogenetic ability to obtain haploids and doubled haploid lines. Genotypes with good induction capacity had not necessarily a good capacity of regeneration of haploid plantlets. In our conditions, Hmira and Khiar exhibited the best gynogenetic ability (3.1% and 2.9% of haploid plantlets, respectively).
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spelling pubmed-62966262019-01-15 Genetic variation of salt-stressed durum wheat (Triticum turgidum subsp. durum Desf.) genotypes under field conditions and gynogenetic capacity Ayed-Slama, Olfa Bouhaouel, Imen Chamekh, Zoubeir Trifa, Youssef Sahli, Ali Ben Aissa, Nadhira Slim-Amara, Hajer J Genet Eng Biotechnol Plant Biotechnology Agriculture has new challenges against the climate change: the preservation of genetic resources and the rapid creation of new varieties better adapted to abiotic stress, specially salinity. In this context, the agronomic performance of 25 durum wheat (Triticum turgidum subsp. durum Desf.) genotypes (nineteen landraces and six improved varieties), cultivated in two semi-arid regions in the center area of Tunisia, were assessed. These sites (Echbika, 2.2 g l(−1); Barrouta, 4.2 g l(−1)) differ by their degree of salinity of the water irrigation. The results showed that most of the agronomic traits (e.g. spike per meter square, thousand kernels weight and grain yield) were reduced by salinity. Durum wheat landraces, Mahmoudi and Hmira, and improved varieties, Maali and Om Rabia showed the widest adaptability to different quality of irrigation water. Genotypes including Jneh Kotifa and Arbi were estimated as stable genotypes under adverse conditions. Thereafter, salt-tolerant (Hmira and Jneh Khotifa) and the most cultivated high-yielding (Karim, Razzak and Khiar) genotypes were tested for their gynogenetic ability to obtain haploids and doubled haploid lines. Genotypes with good induction capacity had not necessarily a good capacity of regeneration of haploid plantlets. In our conditions, Hmira and Khiar exhibited the best gynogenetic ability (3.1% and 2.9% of haploid plantlets, respectively). Academy of Scientific Research and Technology, Egypt 2018-06 2017-12-01 /pmc/articles/PMC6296626/ /pubmed/30647718 http://dx.doi.org/10.1016/j.jgeb.2017.11.004 Text en © 2017 Production and hosting by Elsevier B.V. on behalf of Academy of Scientific Research & Technology. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Plant Biotechnology
Ayed-Slama, Olfa
Bouhaouel, Imen
Chamekh, Zoubeir
Trifa, Youssef
Sahli, Ali
Ben Aissa, Nadhira
Slim-Amara, Hajer
Genetic variation of salt-stressed durum wheat (Triticum turgidum subsp. durum Desf.) genotypes under field conditions and gynogenetic capacity
title Genetic variation of salt-stressed durum wheat (Triticum turgidum subsp. durum Desf.) genotypes under field conditions and gynogenetic capacity
title_full Genetic variation of salt-stressed durum wheat (Triticum turgidum subsp. durum Desf.) genotypes under field conditions and gynogenetic capacity
title_fullStr Genetic variation of salt-stressed durum wheat (Triticum turgidum subsp. durum Desf.) genotypes under field conditions and gynogenetic capacity
title_full_unstemmed Genetic variation of salt-stressed durum wheat (Triticum turgidum subsp. durum Desf.) genotypes under field conditions and gynogenetic capacity
title_short Genetic variation of salt-stressed durum wheat (Triticum turgidum subsp. durum Desf.) genotypes under field conditions and gynogenetic capacity
title_sort genetic variation of salt-stressed durum wheat (triticum turgidum subsp. durum desf.) genotypes under field conditions and gynogenetic capacity
topic Plant Biotechnology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6296626/
https://www.ncbi.nlm.nih.gov/pubmed/30647718
http://dx.doi.org/10.1016/j.jgeb.2017.11.004
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