| 硅对玉米种子萌发和幼苗生长作用机制初探 |
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| 引用本文： | 马成仓,李清芳,束良佐,张经余.硅对玉米种子萌发和幼苗生长作用机制初探[J].作物学报,2002,28(5):665-669. |
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| 作者姓名： | 马成仓 李清芳 束良佐 张经余 |
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| 作者单位： | 淮北煤炭师范学院生物系,安徽淮北,235000 |
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| 基金项目： | 安徽省重点农业项目 (94-14 ) |
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| 摘 要： | 研究硅对玉米种子萌发和幼苗生长代谢的影响, 结果表明: 在Si浓度从1.0 mmol/L到2.5 mmol/L范围内, Si能提高玉米种子萌发过程中淀粉酶、蛋白酶、脂肪酶活性, 促进呼吸代谢, 提高种子发芽率和增加单株鲜重. 在幼苗生长阶段, Si能增加叶绿素含量, 提高光合强度, 增强根系活力和硝酸还原酶活力, 降低蒸腾强度, 提高蒸腾比率、叶
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| 关 键 词： | 硅 玉米 种子萌发 生长 代谢 |
| 收稿时间： | 2000-09-19 |
| 修稿时间： | 2000年9月19日 |
Preliminary Explanation of the Mechanism about Effects of Silicon on Maize Seed Germination and Seedling Growth |
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| MA Cheng,Cang,LI Qing,Fang,SHU Liang,Zuo,ZHANG Jing,Yu.Preliminary Explanation of the Mechanism about Effects of Silicon on Maize Seed Germination and Seedling Growth[J].Acta Agronomica Sinica,2002,28(5):665-669. |
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| Authors: | MA Cheng Cang LI Qing Fang SHU Liang Zuo ZHANG Jing Yu |
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| Abstract: | The effect of Silicon on seed germination and seedling growth of maize was investigated in this paper. The result showed that Silicon accelerate the growth and respiration rate of seedlings, and promoted the activities of diastase, protease and lipase during maize seed germination. Silicon increased contents of chlorophyll and photosynthesis rate, roots activities and nitrate reductase activity of maize seedlings during seedlings growth. Silicon decreased transpiration rate, while increased transpiration ratio and leaf water content. Silicon improved nutrition metabolism of maize seedlings and advanced seedlings growth rate. |
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| Keywords: | Maize Silicon Seed germination Seedling growth Metabolism |
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