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| DOI | 10.1111/nph.19543 |
| Weak local adaptation to drought in seedlings of a widespread conifer | |
| 发表日期 | 2024 |
| ISSN | 0028-646X |
| EISSN | 1469-8137 |
| 起始页码 | 241 |
| 结束页码 | 6 |
| 卷号 | 241期号:6 |
| 英文摘要 | Tree seedlings from populations native to drier regions are often assumed to be more drought tolerant than those from wetter provenances. However, intraspecific variation in drought tolerance has not been well-characterized despite being critical for developing climate change mitigation and adaptation strategies, and for predicting the effects of drought on forests.We used a large-scale common garden drought-to-death experiment to assess range-wide variation in drought tolerance, measured by decline of photosynthetic efficiency, growth, and plastic responses to extreme summer drought in seedlings of 73 natural populations of the two main varieties of Douglas-fir (Pseudotsuga menziesii var. menziesii and var. glauca).Local adaptation to drought was weak in var. glauca and nearly absent in menziesii. Var. glauca showed higher tolerance to drought but slower growth than var. menziesii. Clinal variation in drought tolerance and growth species-wide was mainly associated with temperature rather than precipitation. A higher degree of plasticity for growth was observed in var. menziesii in response to extreme drought.Genetic variation for drought tolerance in seedlings within varieties is maintained primarily within populations. Selective breeding within populations may facilitate adaptation to drought more than assisted gene flow. |
| 英文关键词 | assisted gene flow; climate adaptation; climate change; Douglas-fir; drought tolerance; extreme drought; local adaptation; temperate trees |
| 语种 | 英语 |
| WOS研究方向 | Plant Sciences |
| WOS类目 | Plant Sciences |
| WOS记录号 | WOS:001146070100001 |
| 来源期刊 | NEW PHYTOLOGIST
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/309204 |
| 作者单位 | University of British Columbia |
| 推荐引用方式 GB/T 7714 | . Weak local adaptation to drought in seedlings of a widespread conifer[J],2024,241(6). |
| APA | (2024).Weak local adaptation to drought in seedlings of a widespread conifer.NEW PHYTOLOGIST,241(6). |
| MLA | "Weak local adaptation to drought in seedlings of a widespread conifer".NEW PHYTOLOGIST 241.6(2024). |
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