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花生种子耐脱水力的形成与可溶性糖累积的关系

杨晓泉, 姜孝成, 傅家瑞

中山大学生物系.广东,广州 510275

摘要

花生胚轴的耐脱水力在40-65 DAP的发育后期逐渐增加,同时胚轴还原性糖/非还原性糖比值下降。缓慢干燥可同时诱导35 DAP胚轴累积蔗糖与寡糖(水苏糖与棉籽糖);外源ABA及高渗处理可诱导35 DAP离体胚轴累积蔗糖,但不能累积寡糖(水苏糖)。

关键词： 花生; 种子发育; 耐脱水力; 可溶性糖

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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引用本文：

杨晓泉, 姜孝成, 傅家瑞. 花生种子耐脱水力的形成与可溶性糖累积的关系[J]. 生理学报 1998; 50 (2): .

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).