Individual and interactive effects of drought and heat on leaf physiology of seedlings in an economically important crop.

ABSTRACT: Heat waves in combination with drought are predicted to occur more frequently with climate warming, yet their interactive effects on crop carbon and water balance are still poorly understood. Hence, research on the capacity of crops to withstand and recover from the combined stress is urgently needed. This study investigated the effects of drought and heat wave on a crop species as well as the recovery from the combined stress. Seedlings were grown in growth chambers under two soil water conditions (i.e. well watered and drought stress) at ambient temperature (26°C) for 10 days. Afterwards, half of the seedlings were exposed to a 7-day 42°C heat wave. All the drought-stressed seedlings were then rehydrated upon relief of the heat wave. Leaf gas exchange, the maximum carboxylation capacity

SUBMITTER: Duan H 

PROVIDER: S-EPMC5391698 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature