| 过量Mg2+对农作物种子萌发特性的影响 |
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| 引用本文： | 马恩,付莎莎,张宏波.过量Mg2+对农作物种子萌发特性的影响[J].农业科学与技术,2008,9(2). |
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| 作者姓名： | 马恩 付莎莎 张宏波 |
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| 作者单位： | [1]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [2]中国科学院沈阳应用生态研究所,辽宁沈阳110016 |
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| 基金项目： | 中国科学院东北振兴科技行动计划重点项目，国家重点基础研究发展计划(973计划) |
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| 摘 要： | 以MgCl2溶液考察Mg^2＋对玉米、大豆种子的萌发及生长的影响，为进一步研究镁粉尘的污染机理、生物响应和污染等级划分提供依据。
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| 关 键 词： | 过量Mg^2＋ 农作物 种子萌发 污染机理 生物响应 |
Effects of Excessive Mg2+ on the Germination Characteristics of Crop Seeds |
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| MA En,FU Sha-sha,ZHANG Hong-bo.Effects of Excessive Mg2+ on the Germination Characteristics of Crop Seeds[J].Agricultural Science ＆ Technology,2008,9(2). |
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| Authors: | MA En FU Sha-sha ZHANG Hong-bo |
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| Abstract: | Objective] The research aimed to reveal the effects of exceasive Mg2+ on the germination characteristics of maise and soybean. Method] E-leven concentration gradients of Mg2+ inchiding 0, 40, 80, 120, 160,200,240,280,320,360 and 400 mmoL/L were set up to study the effects of differ-ent treatments on such indices as the germination potential, germination rate, fresh weight, dry weight, root length, plant height and stem diameter of maize and soybean. Result] With the increasing of Mg2+ concentration, the germination (d" maize delayed and the germination rate of soybean obviously decreased, reaching the significant difference at 0.05 level. When Mg2. concentration increased, the fresh weight and dry weight of maize and soybean de-creased, but maize and soybean showed some adaptability. The growth of radicles and seedlings in maize and soyhean were obviously inhibited by Mg2+, and atrophy and dysplasia phenomena appeared. Conclusion] Excessive Mg~" stress has different effects on the germination potential and germination rate of different crops and has obvious poisoning effects on the root and stem growth of crops. |
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| Keywords: | Mg2+ stress Maize Soybean Seeds Germination |
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