Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Belgique → Understanding the plant-water relations of drought-stressed Jatropha curcas plant

Universiteit Gent (2013)

Understanding the plant-water relations of drought-stressed Jatropha curcas plant

KONDWAKWENDA Aleck

Titre : Understanding the plant-water relations of drought-stressed Jatropha curcas plant

Auteur : KONDWAKWENDA Aleck

Université de soutenance : Universiteit Gent

Grade : Master of Science (MS) Physical Land Resources 2013

Résumé
In a greenhouse, three-month old Jatropha plants were exposed to three levels of water stress for a total of 133 days. Long term effects of drought on Jatropha leaf processes, biomass productions, stem diameter variations (SDV), stomatal conductance (gs), stem water potential and daily water use patterns were monitored with the objective of understanding plant water relations of Jatropha under long drought periods. Both morphological and physiological processes were significantly affected by drought. Massive leaf shedding to almost zero by drought stressed plants, stabilization of the stem water potential and strong control of gs are also important processes behind Jatropha drought resistance. Also, the absence of clear stem shrinkages in wet plants and a ’tilted egg’ shaped daily water use pattern could be other strategies behind the long term drought resistance of Jatropha.

Source : Pedon 25 - Physical Land Resources - Universiteit Gent

Page publiée le 8 novembre 2015, mise à jour le 24 janvier 2018