| 胜红蓟种子萌发/出苗对环境因子的响应 |
| |
| 引用本文： | 杜丽思,李铷,董玉梅,黄邦成,傅杨,汤东生.胜红蓟种子萌发/出苗对环境因子的响应[J].生态学报,2019,39(15):5662-5669. |
| |
| 作者姓名： | 杜丽思 李铷 董玉梅 黄邦成 傅杨 汤东生 |
| |
| 作者单位： | 云南农业大学省部共建云南生物资源利用与保护国家重点实验室 |
| |
| 基金项目： | 国家自然科学基金项目（31660555） |
| |
| 摘 要： | 胜红蓟为我国南部低海拔区域农田和果园恶性杂草。为揭示胜红蓟环境适应规律、明确其危害性,评价和分析了胜红蓟种子萌发对光照、温度、pH、盐度、渗透势等环境因子的响应特征。结果表明:胜红蓟种子在10—30℃内均能萌发,最适萌发温度为20℃,交替温度处理可提高种子的萌发率。胜红蓟种子萌发对光照敏感,无光照处理种子不萌发。土壤相对湿度在50%—100%范围内,种子出苗率均高于55%,最适相对湿度为70%。胜红蓟种子仅能在土壤表面萌发,1 cm的播种深度完全抑制种子萌发。pH值在5—10之间,种子萌发率高于85%,最适pH值为7。NaCl浓度在0—80 mmol/L以内种子萌发率超过88%,浓度为160 mmol/L时萌发率接近30%。渗透势在-0.40—0 MPa以内种子萌发率高于70%,渗透势为-0.6 MPa时种子不能萌发。由此可见,胜红蓟种子萌发具有广阔的环境适生范围,对农作物具有较强的早期危害性。
|
| 关 键 词： | 胜红蓟 种子萌发 环境因子 适应性 |
| 收稿时间： | 2017/12/15 0:00:00 |
| 修稿时间： | 2019/3/22 0:00:00 |
Seed germination and seedling emergence of Ageratum conyzoides in response to different environmental factors |
| |
| DU Lisi,LI Ru,DONG Yumei,HUANG Bangcheng,FU Yang and TANG Dongsheng.Seed germination and seedling emergence of Ageratum conyzoides in response to different environmental factors[J].Acta Ecologica Sinica,2019,39(15):5662-5669. |
| |
| Authors: | DU Lisi LI Ru DONG Yumei HUANG Bangcheng FU Yang and TANG Dongsheng |
| |
| Institution: | State Key Laboratory for Utilization and Conservation for Bio-resources of Yunnan, Yunnan Agricultural University, Kunming 650201, China,State Key Laboratory for Utilization and Conservation for Bio-resources of Yunnan, Yunnan Agricultural University, Kunming 650201, China,State Key Laboratory for Utilization and Conservation for Bio-resources of Yunnan, Yunnan Agricultural University, Kunming 650201, China,State Key Laboratory for Utilization and Conservation for Bio-resources of Yunnan, Yunnan Agricultural University, Kunming 650201, China,State Key Laboratory for Utilization and Conservation for Bio-resources of Yunnan, Yunnan Agricultural University, Kunming 650201, China and State Key Laboratory for Utilization and Conservation for Bio-resources of Yunnan, Yunnan Agricultural University, Kunming 650201, China |
| |
| Abstract: | |
| |
| Keywords: | Ageratum conyzoide seed germination environmental factors adaptiveness |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《生态学报》浏览原始摘要信息 |
| 点击此处可从《生态学报》下载免费的PDF全文 |
|
