| 土壤水分胁迫对槟榔幼苗叶绿素荧光动力学参数的影响 |
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| 引用本文： | 陈歆,刘贝贝,韩丙军,周兆德,彭黎旭,杨福孙.土壤水分胁迫对槟榔幼苗叶绿素荧光动力学参数的影响[J].热带作物学报,2012,33(2):230-237. |
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| 作者姓名： | 陈歆 刘贝贝 韩丙军 周兆德 彭黎旭 杨福孙 |
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| 作者单位： | 1 中国热带农业科学院环境与植物保护研究所中国热带农业科学院环境影响评价与风险分析研究中心
2 农业部儋州农业环境科学观测实验站;1 中国热带农业科学院环境与植物保护研究所中国热带农业科学院环境影响评价与风险分析研究中心
2 农业部儋州农业环境科学观测实验站;中国热带农业科学院分析测试中心;海南大学;1 中国热带农业科学院环境与植物保护研究所中国热带农业科学院环境影响评价与风险分析研究中心
2 农业部儋州农业环境科学观测实验站;海南大学 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金（2011hzs1J001）；中国热带农业科学院环植所博士启动经费（Hzs1007）。 |
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| 摘 要： | 以海南长蒂种槟榔幼苗为供试材料，通过控制土壤相对含水量，设置5个土壤水分胁迫水平的单因子盆栽试验，研究土壤水分胁迫程度对槟榔幼苗叶绿素荧光动力学特性的影响。结果表明，长期、持续处于土壤水分胁迫会抑制槟榔幼苗的PSⅡ原初光能转化效率，光合电子传递能力、PSⅡ的光化学活性，PSⅡ潜在活性和PSⅡ潜在光合作用活力。土壤相对含水量≤30％，槟榔幼苗不能持续进行有效的热耗散，但具有较高的热耗散能力。其PSⅡ反应中心会出现不易逆转的破坏。其伤害部位可能位于PSⅡ氧化传递链或PSⅡ反应中心或PSⅡ原初电子受体。
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| 关 键 词： | 槟榔 土壤水分胁迫 叶绿素荧光动力学参数 |
Effects of Different Water Stress on Chlorophyll Fluorescence Parameters of Areca catechu L.Seedling |
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| CHEN Xin,LIU Beibei,HAN Bingjun,ZHOU Zhaode,PENG Lixu and YANG Fusun.Effects of Different Water Stress on Chlorophyll Fluorescence Parameters of Areca catechu L.Seedling[J].Chinese Journal of Tropical Crops,2012,33(2):230-237. |
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| Authors: | CHEN Xin LIU Beibei HAN Bingjun ZHOU Zhaode PENG Lixu and YANG Fusun |
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| Institution: | 1 Environment and Plant Protection Insititute, Chinese Academy of Tropical Agricultural Sciences / Environmental Assessmentand Risk Analysis Center, Chinese Academy of Tropical Agricultural Sciences,
2 Danzhou Scientific Observing and Experimental Station of Agro-Environment, Ministry of Agriculture, P.R.China;1 Environment and Plant Protection Insititute, Chinese Academy of Tropical Agricultural Sciences / Environmental Assessmentand Risk Analysis Center, Chinese Academy of Tropical Agricultural Sciences,
2 Danzhou Scientific Observing and Experimental Station of Agro-Environment, Ministry of Agriculture, P.R.China;Analysis & Testing Center, Chinese Academy of Tropical Agricultural Sciences;Hainan University;1 Environment and Plant Protection Insititute, Chinese Academy of Tropical Agricultural Sciences / Environmental Assessmentand Risk Analysis Center, Chinese Academy of Tropical Agricultural Sciences,
2 Danzhou Scientific Observing and Experimental Station of Agro-Environment, Ministry of Agriculture, P.R.China;Hainan University |
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| Abstract: | The effects of soil water stress on the chlorophyll fluorescence parameters of Hainan areca seedlings were studied,by using a pot experiment with five different soil water contents in this paper.The results showed that the Areca catechu L.Seedlings were in the long-term state of water stress would inhibit the betel nut seedlings’ PSⅡ primary light energy conversion efficiency,photosynthetic electron transport capacity,PSⅡ photochemical activity,PSⅡ potential photosynthetic activity and PSⅡ potential energy.Soil relative water content ≤30%,betel nut seedlings could not be sustained for effective heat dissipation,but with a higher heat dissipation capacity.Betel nut seedlings PSⅡ reaction center would be difficult to reverse the damage.The injuried sites may be located in PSⅡ oxide transport chain or PSⅡ reaction center or the original PSⅡ electron acceptor. |
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| Keywords: | Betel nut Water stress Chlorophyll Fluorescence Parameters |
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