Comparative effect of salinity on growth, grain yield, water use efficiency, δ(13)C and δ(15)N of landraces and improved durum wheat varieties

Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Plant science : an international journal of experimental plant biology. - 1985. - 251(2016) vom: 01. Okt., Seite 44-53
1. Verfasser: Chamekh, Zoubeir (VerfasserIn)
Weitere Verfasser: Ayadi, Sawsen, Karmous, Chahine, Trifa, Youssef, Amara, Hajer, Boudabbous, Khaoula, Yousfi, Salima, Serret, Maria Dolors, Araus, José Luis
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Plant science : an international journal of experimental plant biology
Schlagworte:Journal Article Durum wheat Grain yield Salinity Water use efficiency δ(13)C δ(15)N Sodium Chloride 451W47IQ8X Carbon mehr... 7440-44-0 Nitrogen N762921K75
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245 1 0 |a Comparative effect of salinity on growth, grain yield, water use efficiency, δ(13)C and δ(15)N of landraces and improved durum wheat varieties 
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520 |a Supplemental irrigation with low-quality water will be paramount in Mediterranean agriculture in the future, where durum wheat is a major crop. Breeding for salinity tolerance may contribute towards improving resilience to irrigation with brackish water. However, identification of appropriate phenotyping traits remains a bottleneck in breeding. A set of 25 genotypes, including 19 landraces and 6 improved varieties most cultivated in Tunisia, were grown in the field and irrigated with brackish water (6, 13 and 18dSm(-1)). Improved genotypes exhibited higher grain yield (GY) and water use efficiency at the crop level (WUEyield or 'water productivity'), shorter days to flowering (DTF), lower N concentration (N) and carbon isotope composition (δ(13)C) in mature kernels and lower nitrogen isotope composition (δ(15)N) in the flag leaf compared with landraces. GY was negatively correlated with DTF and the δ(13)C and N of mature kernels and was positively correlated with the δ(15)N of the flag leaf. Moreover, δ(13)C of mature kernels was negatively correlated with WUEyield. The results highlight the importance of shorter phenology together with photosynthetic resilience to salt-induced water stress (lower δ(13)C) and nitrogen metabolism (higher N and δ(15)N) for assessing genotypic performance to salinity 
650 4 |a Journal Article 
650 4 |a Durum wheat 
650 4 |a Grain yield 
650 4 |a Salinity 
650 4 |a Water use efficiency 
650 4 |a δ(13)C 
650 4 |a δ(15)N 
650 7 |a Sodium Chloride  |2 NLM 
650 7 |a 451W47IQ8X  |2 NLM 
650 7 |a Carbon  |2 NLM 
650 7 |a 7440-44-0  |2 NLM 
650 7 |a Nitrogen  |2 NLM 
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700 1 |a Ayadi, Sawsen  |e verfasserin  |4 aut 
700 1 |a Karmous, Chahine  |e verfasserin  |4 aut 
700 1 |a Trifa, Youssef  |e verfasserin  |4 aut 
700 1 |a Amara, Hajer  |e verfasserin  |4 aut 
700 1 |a Boudabbous, Khaoula  |e verfasserin  |4 aut 
700 1 |a Yousfi, Salima  |e verfasserin  |4 aut 
700 1 |a Serret, Maria Dolors  |e verfasserin  |4 aut 
700 1 |a Araus, José Luis  |e verfasserin  |4 aut 
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773 1 8 |g volume:251  |g year:2016  |g day:01  |g month:10  |g pages:44-53 
856 4 0 |u http://dx.doi.org/10.1016/j.plantsci.2016.07.005  |3 Volltext 
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