The Combined Stress of Elevated Temperature and Drought on the Physiological and Biochemical Characteristics of Robinia pseudoacacia L. Seedlings

doi:10.11924/j.issn.1000-6850.2013-2438

Abstract

Abstract: Drought and elevated temperature are two main manifestations of global climate change scenario, which significantly affect plants’growth and spread. Through different temperature and water gradients control, photosynthetic performance and antioxidative enzyme activities of Robinia pseudoacacia L. seedlings were studied. The results showed that drought inhibited seedlings’growth, while short-term high temperature promoted their growth; height, leaf number, photosynthetic performance, POD and CAT were significantly affected by temperature, water and temperature×water; elevated temperature and drought would not only promote seedlings’increase of antioxidative enzyme activities, but also seedlings’accumulation of N and P, but excessive temperature and drought inhibited the accumulation of P.

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