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Dépôt Institutionnel de l'Université Ferhat ABBAS - Sétif 1 >
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Agriculture >
Numéro 0-2010 >
Leaf senescence and carbon isotope discrimination in durum wheat(triticum durum desf.) under severe drought conditions >
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| Titre: | Leaf senescence and carbon isotope discrimination in durum wheat(triticum durum desf.) under severe drought conditions |
| Auteur(s): | Hafsi, M.
Akhter, J.
Monneveux, P. |
| Mots-clés: | carbon isotope discrimination
drought
senescence
durum wheat (Triticum durum Desf.) |
| Date de publication: | 2010 |
| Collection/Numéro: | Volume 0;2010 |
| Résumé: | The relationships between leaf senescence, carbon isotope discrimination and yield performance were
examined in durum wheat (Triticum durum Desf.), in the high plains of Setif, eastern Algeria. Ten CIMMYT high-yielding cultivars were grown during two cropping seasons characterized by low rainfall (217 and 162 mm,
respectively), freezing temperatures at heading stage and terminal heat stress. Senescence was assessed using
numerical image analysis (NIA). Carbon isotope discrimination was analyzed in flag leaves at anthesis and grain at
maturity. Senescence was significantly negatively correlated to grain yield in season 1, but not in season 2. There
was no relationship between Δ and grain yield in both seasons. The absence of association between Δ and grain
yield is likely to be due a strong contribution of pre-anthesis assimilates to yield together with a sink limitation of
yield. |
| URI/URL: | http://dspace.univ-setif.dz:8888/jspui/handle/123456789/348 |
| ISSN: | 2 21 17 70 0 – – 1 10 05 59 |
| Collection(s) : | Leaf senescence and carbon isotope discrimination in durum wheat(triticum durum desf.) under severe drought conditions
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