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Soluble sugar and the acquisition of desiccation tolerance in peanut ( Arachis hypogaea) seeds

Yang Xiaoquan, Jiang Xiaocheng, Fu Jiarui

Department of Biology,Zhongshan University.Guangzhou 510275,Guangdong

Abstract

Accumulation of soluble sugars associated with the acquisition of desiccation tolerance in peanut (Arachis hypogaea L.) seeds were studied. Desiccation tolerance of peanut axes was acquired progressively during 40-65 DAP embryogenesis. The contents of sucrose, raffinose and stachyose, the major oligosaccharides in peanut axes, increased and that of maltose declined with the acquisition of desiccation tolerance during embryogenesis. The content of sucrose and oligosaccharides increased synchronously with slow drying imposed on 35 DAP axes. In vitro incubation of 35 DAP embryos with ABA 10~(-5)mol/L and an osmoticum induced the accumulation of sucrose, but not that of oligosaccharides.

Key words: Arachis hypogaea;Seed development;Desiccation tolerance;Soluble sugar

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Citing This Article：

Yang Xiaoquan, Jiang Xiaocheng, Fu Jiarui. Soluble sugar and the acquisition of desiccation tolerance in peanut ( Arachis hypogaea) seeds. Acta Physiol Sin 1998; 50 (2): (in Chinese with English abstract).