Differential leaf gas exchange responses to salinity and drought in the mangrove tree Avicecennia germinans (Avicenniaceae)
محفوظ في:
| المؤلف: | |
|---|---|
| التنسيق: | artículo original |
| الحالة: | Versión publicada |
| تاريخ النشر: | 2006 |
| الوصف: | Leaf gas exchange was assessed in Avicennia germinans L. grown under different NaCl concentra-tions (0-40‰), after salt-relief, and then during drought. Stomatal conductance (gs) and net photosynthetic rate (Pn) decreased with increasing NaCl concentration, and intrinsic water use efficiency (Pn / gs) increased. Under desalinization Pn / gs declined. Thus, gs did not change in plants grown at low NaCl concentration (10‰), but increased up to 30-32% at higher NaCl concentration (20 - 40‰). However, Pn was only slightly enhanced (10-15%). Under drought, Pn decreased by as much as 46% in plants grown at low NaCl concentration (10‰) and by 22% at high NaCl concentration (40‰). Thus, Pn / gs decreased and water use efficiency was lower during drought compared to estimates prior to salt-relief. |
| البلد: | Portal de Revistas UCR |
| المؤسسة: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| اللغة: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/13877 |
| الوصول للمادة أونلاين: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/13877 |
| كلمة مفتاحية: | Avicennia germinans manglar NaCl conductancia estomas eficiencia de uso de agua |