| 铅对紫花苜蓿种子萌发与幼苗生长的影响 |
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| 引用本文： | 符卓旺 彭,娟 朱,洁 慈,恩 高,明.铅对紫花苜蓿种子萌发与幼苗生长的影响[J].中国农学通报,2011,27(3):303-306. |
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| 作者姓名： | 符卓旺 彭 娟 朱 洁 慈 恩 高 明 |
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| 作者单位： | 西南大学三峡库区农业面源污染控制工程技术研究中心/资源环境学院,重庆,400716 |
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| 基金项目： | 国家科技支撑计划课题“沿三峡库区坡耕地农业面源污染综合治理技术研究与示范”(2007BAD87B10); 重庆高校优秀成果转化资助项目“紫色水稻土有机碳的累积特征研究”; 国家科技支撑计划课题“西南城乡一体化城郊农业与环境协调技术集成与示范”(2008BABA7B10) |
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| 摘 要： | 采用培养试验研究了铅胁迫对紫花苜蓿（Medicago sativa L. )种子萌发与幼苗生长的影响。结果表明，在Pb2+浓度0~100 mg/kg范围内，Pb2+对种子的发芽率和发芽势的影响差异不显著，二者均表现为先轻微下降，然后又逐渐回升，表明紫花苜蓿种子萌发对铅具有一定的耐性。不同浓度Pb2+处理对幼芽和幼根生长均有较明显的抑制作用，且对幼根的毒害作用要比幼芽更明显。当Pb2+浓度达到250 mg/kg以后，其活力指数随之下降，且对紫花苜蓿种子萌发以及幼苗生长均表现出非常明显的毒害作用。
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| 关 键 词： | 玉米 玉米 组合鉴定 试验设计 |
| 收稿时间： | 2010/10/20 0:00:00 |
| 修稿时间： | 2010/12/2 0:00:00 |
Effects of Lead on Seed Germination and Growth of Alfalfa |
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| Fu Zhuowang,Peng Juan,Zhu Jie,Ci En,Gao Ming.Effects of Lead on Seed Germination and Growth of Alfalfa[J].Chinese Agricultural Science Bulletin,2011,27(3):303-306. |
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| Authors: | Fu Zhuowang Peng Juan Zhu Jie Ci En Gao Ming |
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| Institution: | Fu Zhuowang,Peng Juan,Zhu Jie,Ci En,Gao Ming(Engineering Research Center for Agricultural Non-point Source Pollution Control in the Three Gorges Reservoir Area/College of Resources and Environment,Southwest University,Chongqing 400716) |
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| Abstract: | Effects of lead on alfalfa(Medicago sativa L.)seed germination and growth were studied by cultivating experiment.The results showed that the effects of lead on the germination rate of seeds and germination energy were not significant when Pb2+ concentration ranged from 0 to 100 mg/kg.The general trend of seeds germination rate and germinating energy showed slight decrease at first and then gradually recovered.It indicated that alfalfa seed had certain extent patience for lead.The treatments with different P... |
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| Keywords: | lead alfalfa germination heavy metal |
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