| Seed germination in relation to the invasiveness in spiny amaranth and edible amaranth in Xishuangbanna, SW China | |
| Ye, Juan; Wen, Bin | |
| 2017 | |
| Source Publication | PLOS ONE
 |
| Volume | 12Issue:4Pages:e0175948 |
| Abstract | Both spiny and edible amaranths (Amaranthus spinosusand A. tricolor) are exotic annuals in China that produce numerous small seeds every year. Spiny amaranth has become a successful invader and a troublesome weed in Xishuangbanna, but edible amaranth has not, although it is widely grown as a vegetable there. As seed germination is one of the most important life-stages contributing to the ability of a plant to become invasive, we conducted experiments to compare the effects of high temperature and water stress on seed germination in two varieties each of spiny amaranth and edible amaranth. Overall, the seeds of both amaranth species exhibited adaptation to high temperature and water stress, including tolerance to ground temperatures of 70 degrees C for air-dried seeds, which is consistent with their behavior in their native ranges in the tropics. As expected, the invasive spiny amaranth seeds exhibited higher tolerance to both continuous and daily periodic high-temperature treatment at 45 degrees C, and to imbibition-desiccation treatment, compared to edible amaranth seeds. Unexpectedly, edible amaranth seeds exhibited higher germination at extreme temperatures (10 degrees C, 15 degrees C, and 40 degrees C), and at lower water potential (below -0.6 MPa). It is likely that cultivation of edible amaranth has selected seed traits that include rapid germination and germination under stressful conditions, either of which, under natural conditions, may result in the death of most germinating edible amaranth seeds and prevent them from becoming invasive weeds in Xishuangbanna. This study suggests that rapid germination and high germination under stress conditions-excellent seed traits for crops and for many invasive species-might be a disadvantage under natural conditions if these traits are asynchronous with natural local conditions that support successful germination. |
| Language | 英语 |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/10400 |
| Collection | 支撑系统 |
| Recommended Citation GB/T 7714 | Ye, Juan,Wen, Bin. Seed germination in relation to the invasiveness in spiny amaranth and edible amaranth in Xishuangbanna, SW China[J]. PLOS ONE,2017,12(4):e0175948. |
| APA | Ye, Juan,&Wen, Bin.(2017).Seed germination in relation to the invasiveness in spiny amaranth and edible amaranth in Xishuangbanna, SW China.PLOS ONE,12(4),e0175948. |
| MLA | Ye, Juan,et al."Seed germination in relation to the invasiveness in spiny amaranth and edible amaranth in Xishuangbanna, SW China".PLOS ONE 12.4(2017):e0175948. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Seed germination in （3048KB） | 开放获取 | CC BY-NC-SA | View Download | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment