![](https://www.jinchutou.com/images/s.gif)
重金属镉胁迫对水稻种子萌发的影响论文电子版完整版
43页1、沈阳*大学本科毕业论文 题 目:重金属镉胁迫对水稻种子萌发的影响院 系: 环境与生物工程学院 专 业: 环境工程 班 级: 环境* 学生姓名: * 指导教师: * 论文提交日期: 年 月 日论文答辩日期: 年 月 日重金属镉胁迫对水稻种子萌发的影响摘 要近年来,重金属污染导致的环境问题已引起人们的广泛关注。重金属镉是一类主要的环境污染物,对生物体有很强的遗传毒性。以水稻作为实验材料,探讨了系列浓度Cd2+对水稻种子萌发和幼苗生长的影响,为深入研究Cd2+对水稻的伤害及水稻耐Cd2+机制提供参考;本实验还探讨了一定浓度Cd2+胁迫下加入上述实验得到的两种细菌对水稻种子萌发及幼苗生长的影响,为进一步利用微生物技术来缓解Cd2+污染提供参考数据。整个实验结果如下:1、不同浓度的Cd2+及Cd2+-微生物菌液处理对水稻种子萌发的影响:在实验所设浓度范围内,水稻种子出芽率、发芽势、出芽指数、活力指数以及a-淀粉酶活性等指标明显受到镉浓度影响,并且随着镉浓度增大,各项种子萌发指标均呈现明显的下降趋势。当镉浓度小于或等于1mg/L时,各项指标呈现上升趋势,当浓度在1mg/L以后并逐渐增加时,水稻种子
2、出芽率等指标明显受到影响,其浓度在100mg/kg-200mg/kg之间时,镉对水稻种子毒害极深并严重抑制了种子萌发。加入微生物菌液之后,水稻出芽率等指标的含量变化明显得到了改善,并可看出镉胁迫对水稻种子萌发的影响的缓解作用,细菌JL-1比细菌JL-2对镉的吸附作用要好。2、不同浓度的Cd2+及Cd2+-微生物菌液处理对水稻幼苗生长的影响:在实验设置的浓度范围内,随着Cd2+处理浓度的升高,水稻幼苗的生长量和根系活力以及抗氧化酶活性等呈现先上升后下降趋势,根系及幼苗的生长受到严重抑制。当加入微生物菌液以后,上述各项指标的变化明显得到改善,而且在微生物细菌发挥作用中,细菌JL-1要比JL-2要好。关键词:镉;微生物;细菌;水稻32 The Effect Of The Cadmium Stressing On Rice Seed GerminationAbstract In recent years, environmental problems caused by heavy metal pollution has attracted peoples attention. Cadmium
3、 is a kind of major environmental pollutants on living organisms with strong genetic toxicity. We take the rice as the experimental material, talking about the series effect of Cd2+ on rice seed germination and youth growth. In order to study the damage Cd2+ on rice and rice-resistant mechanism of Cd2+ reference this study also explores a certain concentration of Cd2+ stress by adding the above-mentioned experiments of two types of bacteria on rice seed germination and seedling growth; in order
4、to further the use of microbial technology to Cd2+ pollution mitigation to provide reference data. The results are as follows:1, Different concentrations of Cd2+ and Cd2+-microbial bacilli treatment on rice seed germination: the concentration in the experimental set up within the budding rate of rice seeds, germination potential, budding index, vigor index and a-amylase activity and other indicators of significant affected by the concentration of cadmium, and with the concentration of cadmium in
《重金属镉胁迫对水稻种子萌发的影响论文电子版完整版》由会员夏**分享,可在线阅读,更多相关《重金属镉胁迫对水稻种子萌发的影响论文电子版完整版》请在金锄头文库上搜索。
![20XX年6月大学生入党个人自传2000字.docx](https://union.152files.goldhoe.com/2023-12/27/dd4c9011-ebad-4727-9475-6f9c42a5933a/pic1.jpg)
20XX年6月大学生入党个人自传2000字.docx
![2023年青春的演讲稿110范文.docx](https://union.152files.goldhoe.com/2023-9/2/2907642e-87b8-4e00-8097-4fc2a057e5a8/pic1.jpg)
2023年青春的演讲稿110范文.docx
![客服部经理述职报告模版.docx](https://union.152files.goldhoe.com/2023-10/12/536567e4-95e5-4993-ab14-31567bd15d7b/pic1.jpg)
客服部经理述职报告模版.docx
![必备整改通知3篇](https://union.152files.goldhoe.com/2024-1/4/005b9e5c-14f7-4258-8ac2-f2a915315855/pic1.jpg)
必备整改通知3篇
![纸包装QS认证检测设备与检测方法.doc](https://union.152files.goldhoe.com/2023-2/6/55e07b00-95e4-48ff-9783-c0c8fd0ba129/pic1.jpg)
纸包装QS认证检测设备与检测方法.doc
![小班数学教案《拼图形》.docx](https://union.152files.goldhoe.com/2023-12/8/3d78b0eb-3c45-4477-b66f-30fefaf16cb0/pic1.jpg)
小班数学教案《拼图形》.docx
![行政司机2022年工作总结.docx](https://union.152files.goldhoe.com/2023-9/29/1ed2537b-e576-421b-9f4d-dafe0a609c86/pic1.jpg)
行政司机2022年工作总结.docx
![小升初词语运用](https://union.152files.goldhoe.com/2023-7/5/ce5d3378-1be7-49b2-9d1e-ead1dc736d60/pic1.jpg)
小升初词语运用
![一名词解释.doc](https://union.152files.goldhoe.com/2023-7/8/43cfcd09-9d88-4e2d-af26-6a864c64ac49/pic1.jpg)
一名词解释.doc
![反思阅读教学活1](https://union.152files.goldhoe.com/2023-4/13/ef0ca8ef-9197-4244-a9c4-14f1f698c25c/pic1.jpg)
反思阅读教学活1
![春节祝福词.docx](https://union.152files.goldhoe.com/2024-1/28/30ea11d8-5eb6-4ff7-82a0-0c6685f995aa/pic1.jpg)
春节祝福词.docx
![药理学复习(自用、不完全).doc](https://union.152files.goldhoe.com/2022-12/7/52044514-7033-45c2-b4c7-f6f0be298ac3/pic1.jpg)
药理学复习(自用、不完全).doc
![2023年最新采购员工作计划标准范文(二篇).doc](https://union.152files.goldhoe.com/2022-10/16/d1138de9-8a53-4f6b-868c-e00148831d00/pic1.jpg)
2023年最新采购员工作计划标准范文(二篇).doc
![描写观察黄豆生长过程作文1000字.docx](https://union.152files.goldhoe.com/2023-12/17/3d325a13-e06b-4a62-aa7b-dbc76e28bc27/pic1.jpg)
描写观察黄豆生长过程作文1000字.docx
![高三年级家风议论文800字.docx](https://union.152files.goldhoe.com/2023-2/2/2de0e512-fbc6-47c9-a840-4936275e4935/pic1.jpg)
高三年级家风议论文800字.docx
![电脑住宅教学设计.doc](https://union.152files.goldhoe.com/2024-1/15/c271ba5a-0678-4778-81f5-f92c7d1e3b55/pic1.jpg)
电脑住宅教学设计.doc
![二次结构施工技术交底.doc](https://union.152files.goldhoe.com/2022-10/23/d47fd0ca-1878-4052-bad0-6fe7271c90d8/pic1.jpg)
二次结构施工技术交底.doc
![2023年牧民收入增长调研报告.docx](https://union.152files.goldhoe.com/2023-11/2/bcb6bfa9-4c5f-4253-ad66-ea96ae0bc517/pic1.jpg)
2023年牧民收入增长调研报告.docx
![语文教学随笔从课堂特色到特色课堂](https://union.152files.goldhoe.com/2024-1/2/d710e941-68e5-451e-a945-23ef503cc485/pic1.jpg)
语文教学随笔从课堂特色到特色课堂
![厂外来人员管理规定范本.docx](https://union.152files.goldhoe.com/2023-3/14/99c7fe6c-7c71-4f98-b2db-281e5d0e6b88/pic1.jpg)
厂外来人员管理规定范本.docx
![XXX学院智慧校园规划建设方案](/Images/s.gif)
2023-01-11 158页
![如何评初中数学课](/Images/s.gif)
2024-02-23 6页
![三年级下学期语文期末考试质量分析](/Images/s.gif)
2023-02-10 3页
![xx小学2016至2017学年度第一学期](/Images/s.gif)
2023-08-03 5页
![智慧城市综合管理平台功能清单](/Images/s.gif)
2023-01-10 20页
![小学一年级看图写话练习题-打印版](/Images/s.gif)
2022-12-13 12页
![初中物理中考常用公式 总结;](/Images/s.gif)
2023-03-06 5页
![幼儿入园健康承诺书](/Images/s.gif)
2024-01-17 2页
![定密工作各项制度.doc](/Images/s.gif)
2022-10-22 36页
![第45届世界技能大赛河南省美容项目选拔赛样题.doc](/Images/s.gif)
2024-01-24 13页