强旱生植物四合木、半日花的茎和叶脂肪酸含量动态变化特性研究  

Dynamic Fatty Acid Content in the Above-ground Nutritive Organs of Tetraena mongolica & Songaricum schrenk

作　　者：张飞[1] 王琪[1] 杨冠宇[1] 丛靖宇[1] 万东莉[1] 侯亚光[1] 王瑞刚[1] 

机构地区：[1]内蒙古农业大学生物工程学院,呼和浩特010018

出　　处：《林业科技》2009年第5期10-13,共4页Forestry Science & Technology

基　　金：教育部春晖计划(Z2007-1-01013);中国农业大学-内蒙古农业大学合作项目(K32712)联合资助

摘　　要：四合木、半日花的茎和叶几种主要脂肪酸含量及其动态变化规律的研究结果表明:茎、叶的主要饱和脂肪酸和油酸的动态变化均呈抛物线型;多不饱和脂肪酸有随生育进程而降低的一致性规律。多不饱和脂肪酸通过在返青到落叶期形成"贮藏-释放循环",在四合木和半日花的发育和逆境适应中起作用。四合木和半日花茎、叶不饱和脂肪酸含量较高,特别是返青期的亚油酸和亚麻酸,这说明其地上营养器官可作为油脂原料和营养保健材料。The endangered plant of Tetraena mongolica and Songaricurn schrenk were relict flora and distribute only in China. They are valuable resources for scientific research on species evolution, plant anti-stress and biomaterials. In this paper, the main fatty acids content in the stem and leaves of Tetraena mongolica and Songaricum schrenk were detected. The results showed that the variation trends of saturated fatty acid in Tetraena mongolica and Songaricum schrenk takes a parabola shape, while that of unsaturated fatty acid goes down with the process of growth. From spring to autumn, unsaturated fatty acids play an important role on development and stress - resisting by forming a ＂ store - release＂ cycle. The content of unsaturated fatty acid are higher in both stems and leaves of Tetraerta mongolica and Songaricum schrenk, especially that of linoleic acid and linolenic acid, when the plants just turn green in spring. That means the nutritive organs above ground of Tetraena mongolica and Songaricum schrenk could be used as materials for oil extraction, nutrition and health care. Tetraena mongolica and Songaricum schrenk are extemely drought - resistant species. How to protect and use this valuable resource would have great effect on environment and species protection in local area of Inner Mongolia.

关 键 词：四合木 半日花 脂肪酸 地上营养器官 

分 类 号：Q948[生物学—植物学]