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| DOI | 10.1093/treephys/tpae022 |
| Leaf thermotolerance of Hevea brasiliensis clones: intra- versus interclonal variation and relationships with other functional traits | |
| 发表日期 | 2024 |
| ISSN | 0829-318X |
| EISSN | 1758-4469 |
| 起始页码 | 44 |
| 结束页码 | 3 |
| 卷号 | 44期号:3 |
| 英文摘要 | Land surface temperature is predicted to increase by 0.2 degree celsius per decade due to climate change, although with considerable regional variability, and heatwaves are predicted to increase markedly in the future. These changes will affect where crops can be grown in the future. Understanding the thermal limits of plant physiological functioning and how flexible such limits are is thus important. Here, we report on the measurements of a core foliar thermotolerance trait, T-50, defined as the temperature at which the maximum quantum yield (F-v/F-m) of photosystem II declines by 50%, across nine different Malaysian Hevea brasiliensis clones. We explore the relative importance of interclonal versus intraclonal variation in T-50 as well as its association with leaf and hydraulic traits. We find very low variation in T-50 within individual clones (mean intraclonal coefficient of variation (CoV) of 1.26%) and little variation across clones (interclonal CoV of 2.1%). The interclonal variation in T-50 was lower than for all other functional traits considered. The T-50 was negatively related to leaf mass per area and leaf dry matter content, but it was not related to hydraulic traits such as embolism resistance (P-50) or hydraulic safety margins (HSM50). The range of T-50 observed (42.9-46.2 degree celsius) is well above the current maximum air temperatures T-max,(obs) (T-50 - T-max,(obs) >5.8 degree celsius), suggesting that H. brasiliensis is likely thermally safe in this south-east Asian region of Malaysia. |
| 英文关键词 | Fv/Fm; H. brasiliensis; P-50; photosystem II; quantum yield; T-50 |
| 语种 | 英语 |
| WOS研究方向 | Forestry |
| WOS类目 | Forestry |
| WOS记录号 | WOS:001185045100002 |
| 来源期刊 | TREE PHYSIOLOGY
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/300510 |
| 作者单位 | University of Leeds; Malaysian Rubber Board |
| 推荐引用方式 GB/T 7714 | . Leaf thermotolerance of Hevea brasiliensis clones: intra- versus interclonal variation and relationships with other functional traits[J],2024,44(3). |
| APA | (2024).Leaf thermotolerance of Hevea brasiliensis clones: intra- versus interclonal variation and relationships with other functional traits.TREE PHYSIOLOGY,44(3). |
| MLA | "Leaf thermotolerance of Hevea brasiliensis clones: intra- versus interclonal variation and relationships with other functional traits".TREE PHYSIOLOGY 44.3(2024). |
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