热带作物学报2011，Vol.32Issue(9)：1715-1719,5.DOI:10.3969/j.issn.1000-2561.2011.09.027
ABA预处理对蝴蝶兰类原球茎耐脱水性及生理基础的影响
Effects of ABA Pretreatment on Dehydration Tolerance and It's Physiological Bases of Phalaenopsis PLB
摘要
Abstract
Dehydration survival rate of PLB pretreated with H20 and ABA solution respectively, as well as physiological indices of PLB before and after desiccation were, preliminarily studied to reveal the effects of ABA solution pretreatment on the dehydration tolerance and it's physiological bases of Phalaenopsis PLB (protocorm-like body). The result showed that: PLB pretreated with 80 jimol/L ABA had obviously lower dehydration rate and very significantly higher survival rate after desiccation. There were not significant difference in dry weight, relative conductivity and survival rate after desiccation between fresh PLB, PLB pretreated with H2O and ABA solution respectively. Pretreatment of PLB with ABA solution could very significantly increase the contents of soluble protein, heat-stable protein, soluble carbohydrate and sucrose, respectively. Also, ABA could very significantly increase SOD activity of PLB and very significantly decrease the activitives of POD and CAT, but increase very significantly the total antioxidative capability of PLB. It is suggested that pretreatment of Phalaenopsis PLB with ABA solution in a short time could not change weigh indices and damage on PLB, and ABA could increase the content of protective substances and increase the total antioxidative capability, and that was the bases of elevating dehydration tolerance of PLB.关键词
蝴蝶兰类原球茎/ABA预处理/耐脱水性/生理学基础Key words
Phalaenopsis PLB/ Pretreatment with ABA solution/ Dehydration tolerance/ Physiological basis分类
农业科技引用本文复制引用
刘福平..ABA预处理对蝴蝶兰类原球茎耐脱水性及生理基础的影响[J].热带作物学报,2011,32(9):1715-1719,5.基金项目
福建省自然科学基金资助项目(No.2009J01079). （No.2009J01079）
