摘要
对 4℃低温胁迫下 ,不同物候期细叶杜香 (Ledum palustreL .subsp .decumdens)的可溶性蛋白质含量、可溶性糖含量、脯氨酸含量和水分含量进行了研究。结果表明 ,不同物候期的细叶杜香对低温胁迫的适应机制不相同。萌发期细叶杜香抗逆性强 ,可溶性蛋白质、可溶性糖和脯氨酸含量在低温胁迫过程中上升且维持在一个较高的水平 ;生殖期和营养期细叶杜香抗逆性较弱 ,三者含量在低温胁迫过程中先下降 ,低温适应机制形成后逐渐升高。三个物候期的细叶杜香含水量维持在恒定水平 ,束缚水 (Wd)
After 4℃ low temperature stress, the content of soluble protein, soluble sugar, proline and water on different phonological period of Ledum palustre L. subsp. decumdens was measured. The result showed that the phenological period C has different physiological adaptive mechanism for low temperature stress. Under low temperature stress, L. palustre L. subsp. decumdens in germinative period shows stronger hardiness. The content soluble protein, soluble sugar and proline increased and maintained at a high level . If the L. palustre L. subsp. decumdens is growing or reproducing, it has weak hardiness. During low temperature stress the three physiological parameter decreased first. When the physiological adaptive mechanism to low temperature stress has been formed, the physiological parameters increased again. In the three phenological period, The Ledum palustre L. subsp. decumdens content of water maintains stability level, the content of bound water increased.
出处
《植物研究》
CAS
CSCD
北大核心
2004年第2期197-200,共4页
Bulletin of Botanical Research
基金
齐齐哈尔市科技局计划项目
