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当前位置: 首页 > 文章 > 铝胁迫对橡胶苗生理和叶绿素荧光特性的影响 应用生态学报 2018 (12) 4191-4198
Position: Home > Articles > Effects of aluminum toxicity on physiological and leaf chlorophyll fluorescent characteristics of rubber tree seedlings Chinese Journal of Applied Ecology 2018 (12) 4191-4198

铝胁迫对橡胶苗生理和叶绿素荧光特性的影响

作  者：
安锋;李昌珍;张婷婷;王立丰;王纪坤;谢贵水
单  位：
中国热带农业科学院橡胶研究所;中国热带农业科学院橡胶研究所/农业部儋州热带作物科学观测试验站;海南大学热带农林学院
关键词：
橡胶树;铝毒;抗氧化酶;渗透调节物质;叶绿素荧光
摘  要：
热带酸性土壤中铝毒非常普遍,其对橡胶树生长的影响尚不清楚.采用盆栽砂培试验研究了铝离子对橡胶苗生理和叶绿素荧光特性的影响.结果表明:当铝浓度高于200mmol·L~(-1)时,橡胶苗细胞质膜透性、叶片游离脯氨酸和可溶性糖含量显著提高,相对含水量、过氧化氢酶和过氧化物酶活性、叶片叶绿素a含量、叶绿素最大荧光、PSⅡ最大光化学效率、PSⅡ潜在活性、光化学淬灭系数、非光化学淬灭系数和光合电子传递速率显著降低;当铝离子浓度低于100 mmol·L~(-1)时,不同处理间橡胶苗生理和叶绿素荧光特性差异较小或不明显.说明橡胶树是较为耐铝的植物,铝离子对橡胶苗造成伤害的阈值在100～200 mmol·L~(-1);超过这一浓度,会造成橡胶苗不可逆的伤害.
译  名：
Effects of aluminum toxicity on physiological and leaf chlorophyll fluorescent characteristics of rubber tree seedlings
作  者：
AN Feng;LI Chang-zhen;ZHANG Ting-ting;WANG Li-feng;WANG Ji-kun;XIE Gui-shui;Rubber Research Institute,Chinese Academy of Tropical Agricultural Sciences/Ministry of Agriculture Danzhou Investigation & Experiment Station of Tropical Crops;Hainan Province Key Laboratory for Sustainable Utilization of Tropical Bioresources;Institute of Tropical Agriculture and Forestry,Hainan University;
单  位：
AN Feng%LI Chang-zhen%ZHANG Ting-ting%WANG Li-feng%WANG Ji-kun%XIE Gui-shui%Rubber Research Institute,Chinese Academy of Tropical Agricultural Sciences/Ministry of Agriculture Danzhou Investigation & Experiment Station of Tropical Crops%Hainan Province Key Laboratory for Sustainable Utilization of Tropical Bioresources%Institute of Tropical Agriculture and Forestry,Hainan University
关键词：
rubber;;aluminum toxicity;;antioxidant enzyme;;osmotic substance;;chlorophyll fluorescence
摘  要：
Aluminum toxicity is common in tropical acid soils. However,its effects on rubber tree growth and latex production are still unclear. Using potted sand culture seedlings of rubber tree,the effects of different aluminum ion concentrations on physiological and chlorophyll( Chl) fluorescence characteristics were investigated. The results showed that the cell membrane permeability,free proline content,and soluble sugar content were significantly increased,while the relative water content,catalase and peroxidase activities,Chl a content,Chl maximum fluorescence yield,maximum photosynthesis efficiency and potential activity of PSII,photochemical quenching coefficient,nonphotochemical quenching coefficient and photosynthetic electron transport rate were significantly decreased when the saplings were subjected to Al Cl_3 treatments with concentration higher than 200 mmol·L~(-1). When the Al Cl_3 concentration was lower than 100 mmol ·L~(-1),the aforementioned parameters did not show any significant variation among different treatments for the entire duration of the experiment. These results indicated that the rubber tree could tolerate some degree of aluminum toxicity. The threshold concentration of aluminum toxicity for rubber tree seedlings would be between100 to 200 mmol·L~(-1). When this threshold was exceeded,aluminum toxicity would cause irreversible damage to rubber tree seedlings.

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