| 胺鲜酯和镉对蓖麻幼苗光合生理特性的影响 |
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| 引用本文： | 张铮,钱宝云,程晓庆,刘彩凤,史刚荣.胺鲜酯和镉对蓖麻幼苗光合生理特性的影响[J].核农学报,2011,25(3):602-608,587. |
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| 作者姓名： | 张铮 钱宝云 程晓庆 刘彩凤 史刚荣 |
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| 作者单位： | 资源植物学安徽省重点实验室,淮北师范大学生命科学学院,安徽淮北235000 |
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| 摘 要： | 以蓖麻(Ricinus communis L.)为研究对象,通过水培试验研究胺鲜酯(DA-6)和镉(Cd)对蓖麻生长和光合生理特性的交互作用,探讨DA-6浸种对植物Cd毒害是否具有缓解作用.研究结果表明,50μmol·L-1CdCl2对蓖麻幼苗生长和光合作用具有抑制作用.Cd处理显著降低蓖麻叶片的光合速率(Pn)、气孔...
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| 关 键 词： | 镉 胺鲜酯 蓖麻 光合作用 |
| 收稿时间： | 2010-08-04 |
| 修稿时间： | 2010-10-12 |
RESPONSES OF PHOTOSYNTHETIC TRAITS OF CASTOR BEAN SEEDLINGS TO CADMIUM AND DIETHYL AMINOETHYL HEXANOATE |
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| ZHANG Zheng,QIAN Bao-yun,CHEN Xiao-qing,LIU Cai-feng,SHI Gang-rong.RESPONSES OF PHOTOSYNTHETIC TRAITS OF CASTOR BEAN SEEDLINGS TO CADMIUM AND DIETHYL AMINOETHYL HEXANOATE[J].Acta Agriculturae Nucleatae Sinica,2011,25(3):602-608,587. |
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| Authors: | ZHANG Zheng QIAN Bao-yun CHEN Xiao-qing LIU Cai-feng SHI Gang-rong |
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| Institution: | The Anhui Provincial Key Laboratory of the Resource Plant Biology, College of Life Sciences, Huaibei Normal University, Huaibei, Anhui 235000 |
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| Abstract: | To determine whether diethyl aminoethyl hexanoate (DA-6) pretreatment alleviated the cadmium (Cd) toxicity to castor bean (Ricinus communis L.) seedlings, tffects of Cd (0, 50μmol·L-1CdCl2) and DA-6 (0, 0.1, 10 and 1000mg·L-1), and their interactions on plant growth and photosynthesis were investigated. Results showed that 50 μmol·L-1CdCl2 inhibited plant growth and photosynthesis of castor seedlings. Under Cd exposure, the net photosynthetic rate (Pn), stomatal conductance (Gs) and transpiration rate (E), photosynthetic pigment contents (Chl a, Chl b, Chl a+b, Car and Chl /Car) and chlorophyll fluorescence parameters (Fm, Fv/Fm, Fv/F0and ΦPS II) decreased, whereas the intercellular CO2 concentration (Ci), Chl a/b and F0 increased. Presoaking seeds with different concentrations of DA-6 did not change the plant growth regardless of Cd. In the absence of Cd, DA-6 pretreatment significantly enhanced the pigment contents (Chl a, Chl b, Chl a+b and Car) in castor leaves, while the ratio of pigment content (Chl a/b, Chl/Car), chlorophyll fluorescence parameters, and gas exchange parameters remained unaffected. In the present of Cd, presoaking seeds with 10 and 1000mg·L-1 DA-6 caused a reduction in pigment contents (Chl a, Chl b, Chl a+b and Car), gas exchange parameters (Pn, E and Gs), as well as chlorophyll fluorescence parameters (Fm, Fv/Fm, Fv/F0and ΦPS II) in castor seedlings. It was indicated that DA-6 presoaking might aggravate, rather than alleviate, the inhibition of Cd on photosynthesis of castor bean seedlings. |
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| Keywords: | cadmium diethyl aminoethyl hexanoate castor bean photosynthesis |
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