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Effects of drying at different rates on desiccation sensitivity and membrane lipid peroxidation in Chinese wampee [Clausena lansium (Lour.) Skeels] axes

Wu Xianjin, Song Songquan, Qian Chunmei, Chen Ling, Fu Jiarui

The Key Laboratory of Gene Engineering of Ministry of Education,School of Life Sciences,Zhongshan University.Guangzhou 510275,Guangdong

Abstract

It has been found that the more rapidly the dehydration of axes is achieved, the lower the water content at which 50% of axes were killed by dehydration is. Flash-dried axes can survive lower water contents because the time when aqueous-based membrane lipid peroxidation occurred was significantly shortened at intermediate water contents and higher activities of SOD, POD and CAT remained at lower water contents. After the equilibrium water contents between slowly-dried axes and ambient relative humidity were reached, the loss of viability were associated with the duration the axes are kept at that water content. The dehydration at different rates, therefore, is an important factor which influences desiccation sensitivity of recalcitrant seeds or axes.

Key words: Clausena lansium axis;Drying rate;Membrane lipid peroxidation;Recalcitrant seed;Viability

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Citing This Article：

Wu Xianjin, Song Songquan, Qian Chunmei, Chen Ling, Fu Jiarui. Effects of drying at different rates on desiccation sensitivity and membrane lipid peroxidation in Chinese wampee [Clausena lansium (Lour.) Skeels] axes. Acta Physiol Sin 2001; 53 (5): (in Chinese with English abstract).