| 钙离子和EDTA对小麦耐锌力的影响 |
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| 引用本文： | 张礼忠,赵凌菲,潘艳华.钙离子和EDTA对小麦耐锌力的影响[J].西南农业大学学报,1987(4). |
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| 作者姓名： | 张礼忠 赵凌菲 潘艳华 |
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| 作者单位： | 西南农业大学土化系，西南农业大学土化系，西南农业大学土化系 |
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| 摘 要： | 水培结果表明,绵阳11和15号小麦耐有效锌的临界值为600ppm。在0.05—400ppm以内。幼苗生长正常,400ppm时,便出现锌中毒症状,至600ppm时,症状最严重,显症时间最早,从培养第3日起,植株开始枯萎,到第9日,焦叶指数和蔫萎指数均达三级,植株含锌量达6674ppm;而400ppm处理的,症状较轻,植株含锌量明显下降,为6185ppm。加钙处理(500ppmCa~(2+)),使症状加剧,显症提前,植株含锌量相应增高。加0.1％EDTA处理,使症状减轻,推迟显症,植株含锌量下降;在最高锌量(600ppm)加EDTA处理,较其它处理的植株,症状最轻、最迟,含锌量最低。
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| 关 键 词： | 钙离子 EDTA 小麦 锌 耐受性 |
THE EFFECTS OF Ca~(2+) AND EDTA ON THE ZINC TOLERANCE OF WHEAT |
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| Zhang Lizhong,Zhao Lingfei,Pan Yanhua.THE EFFECTS OF Ca~(2+) AND EDTA ON THE ZINC TOLERANCE OF WHEAT[J].Journal of Southwest Agricultural University,1987(4). |
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| Authors: | Zhang Lizhong Zhao Lingfei Pan Yanhua |
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| Abstract: | The results of solution culture showed that the critical value of the high Zinc concentration tolerance of wheat (the cultivers of Mian Yang 11 and 15 )was 600 ppm. The seedlings grew normally at the concentration of Zinc from 0.05 to<400 ppm. The Zinc toxicity symptom occurred in different extent when the Zn~(2+) of concentration of 400 ppm and 600 ppm was added to the culture solutions. For the treatment of 600 ppm Zn~(2+) the symptom was most severe and occurred most early, leaf withering appeared 3 days from the begining of culture: the withering index was up to the third degree; and the Zinc content of the plants was up to 6674 ppm. But, in the treatment of 400 ppm Zn~(2+), Zinc toxicity symptom was obviously light, and the Zinc content of the seedlings was remarkably low. Adding Ca~(2+) (500 ppm) to the culture solution made the Zinc toxicity symptom more severe and earlier, and the plant Zinc content increased accordingly under the same toxicity conditions. Adding EDTA (0.1%), under the same toxicity conditions, the symptom lightened and postponed, and the plant Zinc content decreased accordingly. In the treatment of maximum Zn~(2+)(600 ppm)plus EDTA (0.1%), among all the4 maximum Zn~(2+) treatments, the plant toxicty symptom was the lightest and latest, and the plant Zinc content was the lowest also. |
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| Keywords: | calcium ion EDTA triticum aestivum Zinc tolerance |
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