热带作物学报2017，Vol.38Issue(10)：1777-1783,7.DOI:10.3969/j.issn.1000-2561.2017.10.002
不同旱害级别对开割和未开割橡胶树形态和生理特性的影响
Effects of Different Drought Grades on the Morphological and Physiological Characterizations of Tapping Tree and Virgin Tree of Hevea brasiliensis
摘要
Abstract
Drought will cause growth retardation,leaf falling and increase TPD rating in rubber tree Hevea brasiliensis).In this study,different drought grades of RRIM600 tapping tree and virgin tree were used for comparison of the variations of latex,phenotypes,soil water contents,chlorophyll contents and other leaf physiological indices.The results showed that the DRC and TSC maintained at a high level in tapping tree,which not suitable for tapping with the increase of drought grades.Both tapping tree and virgin tree showed the same physiological responsive mechanism.Leaf area decreased gradually with the increase of drought grades.Chlorophyll contents reduced,but the Chla/Chlb ratio did not show obvious change in the leaves.Pro,SS,POD and SOD showed protection roles in drought stress.These results suggest that the leaf area would reduce,and the osmoregulation substance contents and antioxidant enzyme activities would increase under drought conditions.This study lay a good foundation for the establishment of a new rubber drought grades classification standards and screening drought diagnosis index in rubber tree.关键词
巴西橡胶树/开割树/未开割树/干旱/生理响应Key words
Hevea brasiliensis Müll.Arg./tapping tree/virgin tree/drought/physiological response分类
农业科技引用本文复制引用
王立丰,安锋,王纪坤,邹智,赖华英,谢贵水..不同旱害级别对开割和未开割橡胶树形态和生理特性的影响[J].热带作物学报,2017,38(10):1777-1783,7.基金项目
现代农业产业技术体系建设专项资金(No.CARS-34-ZP1) （No.CARS-34-ZP1）
海南省自然科学基金(No.310096) （No.310096）
中国热带农业科学院橡胶研究所基本科研业务费专项(No.1630022015013). （No.1630022015013）
