欢迎访问《应用生态学报》官方网站,今天是 分享到:

应用生态学报 ›› 2018, Vol. 29 ›› Issue (12): 4191-4198.doi: 10.13287/j.1001-9332.201812.006

• 研究论文 • 上一篇    下一篇

铝胁迫对橡胶苗生理和叶绿素荧光特性的影响

安锋1,李昌珍1,2,3*,张婷婷3,王立丰1,王纪坤1,谢贵水1   

  1. 1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, 海南儋州 571737;
    2海南省热带生物资源可持续利用重点实验室, 海口 570228;
    3海南大学热带农林学院, 海口 570228
  • 收稿日期:2018-04-11 修回日期:2018-09-30 出版日期:2018-12-20 发布日期:2018-12-20
  • 作者简介:安 锋, 男, 1977年生, 博士, 副研究员. 主要从事橡胶树等热带作物栽培与生理生态研究. E-mail: an-f@163.com
  • 基金资助:
    本文由国家自然科学基金面上项目(31670633)资助

Effects of aluminum toxicity on physiological and leaf chlorophyll fluorescent characteristics of rubber tree seedlings

AN Feng1, LI Chang-zhen1,2,3*, ZHANG Ting-ting3, WANG Li-feng1, WANG Ji-kun1, XIE Gui-shui1   

  1. 1Rubber Research Institute, Chinese Academy of Tropical Agricultural Sciences/Ministry of Agriculture Danzhou Investigation & Experiment Station of Tropical Crops, Danzhou 571737, Hainan, China;
    2Hainan Province Key Laboratory for Sustainable Utilization of Tropical Bioresources, Haikou 570228, China;
    3Institute of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
  • Received:2018-04-11 Revised:2018-09-30 Online:2018-12-20 Published:2018-12-20
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (31670633).
    2018-04-11 Received, 2018-09-30 Accepted

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200 mmol·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.

Abstract: 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, non-photochemical quenching coefficient and photosynthetic electron transport rate were significantly decreased when the saplings were subjected to AlCl3 treatments with concentration higher than 200 mmol·L-1. When the AlCl3 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 between 100 to 200 mmol·L-1. When this threshold was exceeded, aluminum toxicity would cause irreversible damage to rubber tree seedlings.