| 徐 放，张卫华，潘 文，杨会肖，杨晓慧，廖焕琴，徐 斌，朱报著，王裕霞.27 种木本花卉抗寒与抗旱性评价[J].广东农业科学,2020,47(8):37-46 |
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27 种木本花卉抗寒与抗旱性评价 |
| Evaluation on Cold and Drought Resistance of 27 Woody Flower Species |
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| DOI：10.16768/j.issn.1004-874X.2020.08.006 |
| 中文关键词: 木本花卉 抗寒 抗旱 k-means 聚类分析 逼近理想解排序法（TOPSIS） |
| 英文关键词: woody flower cold-resistance drought- resistance k-means clustering technique for order preference by similarity to an ideal solution（TOPSIS） |
| 基金项目:广东省林业科技创新项目（2011KJCX004，2014KJCX005-01） |
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| 中文摘要: |
| 【目的】研究不同木本花卉物种在不同干旱和寒冷条件下的生理反应，开展不同木本花卉物种抗寒性和抗旱性的综合评定，为各物种的引种和推广提供可靠的依据。【方法】以 14 个科的 27 个木本花卉物种的室内盆栽植株作为试验材料，利用大型低温人工气候室进行阶段降温寒冷模拟，利用聚乙二醇 6000 溶液模拟不同干旱环境。对不同处理时间点的植株叶片进行电导率和相对含水量的测定，并利用 k-means 聚类方法对不同物种的抗寒和抗旱能力进行评价，基于测定的生理指标数据使用 TOPSIS 方法对抗寒和抗旱能力进行综合评价并排序。【结果】抗寒试验结果显示，杜鹃红山茶和澳洲火焰木等 15 个物种的抗寒性综合评定 U 值在 2.73以下，具有相对较强的抗寒能力，黄花风铃木、木棉等物种抗寒能力较弱；抗旱性试验结果显示，铁刀木、杜鹃红山茶等 10 个物种抗旱综合评定 U 值在 2.30 以下，抗旱能力较强，腊肠树、仪花等 17 个物种抗旱能力较弱。【结论】27 个树种的抗寒性和抗旱性具有显著差异，其中山茶属和苏木属物种具有较好的综合抗性，为后续各个木本花卉树种栽培和推广提供了重要的参考。 |
| 英文摘要: |
| 【Objective】The study was conduct to explore the physiological responses of different woody flower species under different drought and cold conditions, and a comprehensive assessment on the cold resistance and drought resistance of these species was performed in order to provide a reliable basis for the introduction and promotion of various species.【Method】The potted plants of 27 species belonging to 14 families were used as test materials. Large-scale lowtemperature artificial climate chambers were used for stage cooling and cold simulation. Polyethylene glycol 6000 solution was used to simulate different arid environments. The electrical conductivity and relative water content of plant leaves treated at different time points were measured, and the k-means clustering method was used to evaluate the cold and drought resistance of various species. Based on the measured physiological index data, TOPSIS method was used to comprehensively evaluate and rank the ability of cold and drought resistance.【Result】The results of cold resistance test showed that 15 species such as Camellia azalea and Brachychiton acerifolius had relatively strong cold resistance, the U value of the comprehensive evaluation of cold resistance was below 2.73. Species such as Handroanthus chrysanthus and Bombax malabaricum has relatively weak cold resistance. The results of drought resistance tests showed that 10 species such as Cassia siamea and Camellia azalea were more resistant to drought, the U value of comprehensive evaluation of drought resistance was below 2.30, while 17 species such as Cassia fi stula and Lysidice rhodostegia had weaker drought resistance.【Conclusion】There are significant differences in cold and drought resistance among 27 species, of which Camellia and Hematoxylin have better comprehensive resistance. The results provide a robust reference for the cultivation and promotion of various woody flower species. |
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