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| DOI | 10.1007/s00468-023-02485-3 |
| Covering young avocado 'Hass' trees with high-density shading nets during the winter mitigates frost damage and improves tree performance | |
| 发表日期 | 2024 |
| ISSN | 0931-1890 |
| EISSN | 1432-2285 |
| 起始页码 | 38 |
| 结束页码 | 2 |
| 卷号 | 38期号:2 |
| 英文摘要 | Key message Covering young 'Hass' trees with Silver 60% shading nets during cold winters mitigates frost damage and improves tree performance, apparently through a mechanism other than increasing nighttime air temperature. Avocado is a commercially important subtropical evergreen fruit tree. Severe frost may damage foliage, floral buds, flowers and fruit, thereby reducing avocado crop yield and restricting its geographical distribution and expansion. Shading nets are frequently used to protect agricultural crops from climate-related damage. To determine their ability to mitigate frost damage, Silver 60% shading nets were deployed over young 'Hass' trees during two consecutive winters and uncovered trees served as controls. Freezing and chilling temperatures occurred in the experimental orchard during the winter of each year, from December to March, reaching - 2.49 degrees C in January 2022. In the control, 93% of the examined floral buds were severely damaged compared to 4% in the Silver 60% trees. Damage to young vegetative shoots was assessed at 4.35 out of 5 in the control compared to 0.5 out of 5 in the Silver 60% trees. In both years, minimum air temperatures under the Silver 60% shading nets were similar to those of the control. Leaf-level photosynthetic photon flux density was similar to 60% lower under the shading nets. In most measurements, CO2-assimilation rate, stomatal conductance, ratio of variable to maximum fluorescence (Fv/Fm) and chlorophyll concentration in the leaves of the Silver 60% trees were higher than, or similar to the controls. Trunk diameter and flowering intensity of the Silver 60% trees were higher than for the control. These results indicate that covering young 'Hass' trees with Silver 60% shading nets during cold winters can mitigate frost damage and improve tree performance. |
| 英文关键词 | Abiotic stress; Climate change; Cold stress; Persea americana; Shading management |
| 语种 | 英语 |
| WOS研究方向 | Forestry |
| WOS类目 | Forestry |
| WOS记录号 | WOS:001157689900001 |
| 来源期刊 | TREES-STRUCTURE AND FUNCTION
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/303279 |
| 推荐引用方式 GB/T 7714 | . Covering young avocado 'Hass' trees with high-density shading nets during the winter mitigates frost damage and improves tree performance[J],2024,38(2). |
| APA | (2024).Covering young avocado 'Hass' trees with high-density shading nets during the winter mitigates frost damage and improves tree performance.TREES-STRUCTURE AND FUNCTION,38(2). |
| MLA | "Covering young avocado 'Hass' trees with high-density shading nets during the winter mitigates frost damage and improves tree performance".TREES-STRUCTURE AND FUNCTION 38.2(2024). |
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