Responses of leaf growth and gas exchanges to salt stress during reproductive stage in wild wheat relative Aegilops geniculata Roth. and wheat (Triticum durum Desf.)

• Autorzy: Mguis K , Albouchi A. , Abasi M. , Khadhri A. , Ykoubi-Tej M. , Mahjoub A. , Brahim N. B. , Ouerghi Z.
• Języki publikacji: EN

Abstrakty

EN

In order to investigate the effect of salinity on the growth and photosynthesis of the wild wheat and wheat, three accessions of Aegilops geniculata from Ain Zana, Zaghouan and Sbitla and one variety of durum wheat (Triticum durum) were grown in the INRAT greenhouse and treated with different salinity levels. The growth of leaves, water status and gas exchange parameters have been measured at the reproductive stage. The flag leaf length, total leaf dry weight, water status, CO2 assimilation rate, stomatal conductance, intercellular CO2 and transpiration for the three Ae. geniculata accessions and wheat variety significantly decreased with increasing salt. The decline in photosynthesis measured in response to salt stress was proportionally greater than the declines in transpiration, resulting in a reduction of water-use efficiency, at both the leaf and whole-plant levels. Among the factors inhibiting photosynthetic activity, those of a stomatal nature had a greater effect. This study has shown a high degree of variation of these characters mainly related to geographical origin. It was observed also that Sbitla accession was less affected by the imposed salt stress than all the others while Ain Zana was the most affected one.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2013
• Tom: 35
• Numer: 05
• Opis fizyczny: p.1453-1461,fig.,ref.

Twórcy

autor

Mguis K

• Unite´ d’Agrosylvopastoralisme, INRGREF, Rue Hedi Karray, 2080 Ariana, Tunisia
• Laboratoire de Botanique, INRAT, Rue Hedi Karray, 2080 Ariana, Tunisia
• Unite´ de Physiologie et Biochimie de la tole´rance aux sels des plantes, De´partement de Biologie FST, FST, Universite´ de Tunis El Manar, 2092 Tunis, Tunisia

autor

Albouchi A.

• Unite´ d’Agrosylvopastoralisme, INRGREF, Rue Hedi Karray, 2080 Ariana, Tunisia

autor

Abasi M.

• Unite´ d’Agrosylvopastoralisme, INRGREF, Rue Hedi Karray, 2080 Ariana, Tunisia

autor

Khadhri A.

• De´partement de biologie FST, FST, Universite´ de Tunis El Manar, Campus Universitaire, 1060 Tunis, Tunisia

autor

Ykoubi-Tej M.

• De´partement de biologie FST, FST, Universite´ de Tunis El Manar, Campus Universitaire, 1060 Tunis, Tunisia

autor

Mahjoub A.

• Laboratoire de Botanique, INRAT, Rue Hedi Karray, 2080 Ariana, Tunisia

autor

Brahim N. B.

• Laboratoire de Botanique, INRAT, Rue Hedi Karray, 2080 Ariana, Tunisia

autor

Ouerghi Z.

• Unite´ de Physiologie et Biochimie de la tole´rance aux sels des plantes, De´partement de Biologie FST, FST, Universite´ de Tunis El Manar, 2092 Tunis, Tunisia

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