| 高温胁迫下8个绣球品种的生理生化响应 |
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| 引用本文： | 陆艾鲜,凌瑞,陈生煜,翟俊文,郑泽新,吴沙沙.高温胁迫下8个绣球品种的生理生化响应[J].热带作物学报,2022,43(4):816-828. |
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| 作者姓名： | 陆艾鲜 凌瑞 陈生煜 翟俊文 郑泽新 吴沙沙 |
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| 作者单位： | 1.福建农林大学园林学院,福建福州 3500022.福建省观赏植物种质资源创新与应用工程技术研究中心,福建福州 3500023.福建省绣球花卉科技有限公司,福建永春 362600 |
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| 基金项目： | 2020年度福建农林大学乡村振兴服务团队项目(11891970151);福建农林大学科研创新基金项目(KFA17331A);2018年福建农林大学花卉产业专家指导服务团队项目(11891008001) |
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| 摘 要： | 中国南方地区夏季高温是限制绣球在该地区引种栽植与园林应用的重要因素之一,探讨绣球在高温胁迫下生理生化的响应机理,对绣球在特殊立地条件下的应用有重要参考意义。试验以8个绣球品种为材料,利用人工气候箱模拟高温胁迫44℃/33℃（昼/夜）下9项指标的生理生化指标变化。结果表明,高温胁迫下,8个绣球品种的热害指数呈上升趋势,且由高到低依次为‘灵感’>‘银边’>‘纱织小姐’>‘小町’>‘爱莎’>‘含羞叶’>‘花手鞠’>‘头花’;相对电导率、丙二醛呈持续上升趋势,‘纱织小姐’‘银边’及‘小町’叶片的相对电导率与丙二醛含量增幅最大,‘爱莎’‘头花’及‘含羞叶’叶片的相对电导率与丙二醛含量增幅均最小;过氧化物酶、超氧化物歧化酶和过氧化氢酶的活性均产生显著影响,适度的高温诱导了绣球叶片上述3种酶活性的上升;可溶性糖含量在高温胁迫前期变化较小,但总体呈上升趋势;可溶性蛋白含量呈上升趋势,‘银边’与‘灵感’的蛋白质合成速率最低,‘头花’与‘含羞叶’的蛋白质合成速率最高;游离脯氨酸含量呈上升趋势,‘花手鞠’与‘头花’通过游离脯氨酸进行渗透调节的能力显著强于其他品种,‘灵感’与‘银边’通过游离脯氨酸进行渗透调节的能力显著弱于其他品种。利用模糊隶属函数分析8个绣球品种耐高温能力,‘纱织小姐’为最耐高温的品种,其次为‘含羞叶’‘小町’‘花手鞠’‘头花’‘灵感’‘爱莎’,‘银边’为最不耐高温的品种。本研究为探究绣球品种在高温胁迫下的生理生化响应机制提供了理论依据。
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| 关 键 词： | 绣球品种 高温胁迫 生理生化响应 耐热性 |
| 收稿时间： | 2021-09-26 |
Physiological and Biochemical Responses of Eight Hydrangea Cultivars to High Temperature Stress |
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| LU Aixian,LING Rui,CHENG Shengyu,ZHAI Junwen,ZHENG Zexin,WU Shasha.Physiological and Biochemical Responses of Eight Hydrangea Cultivars to High Temperature Stress[J].Chinese Journal of Tropical Crops,2022,43(4):816-828. |
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| Authors: | LU Aixian LING Rui CHENG Shengyu ZHAI Junwen ZHENG Zexin WU Shasha |
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| Institution: | 1. College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China2. Fujian Ornamental Plant Germplasm Resources Innovation & Engineering Application Research Center, Fuzhou, Fujian 350002, China3. Fujian Hydrangea Flower Technology Co., Ltd, Yongchun, Fujian 362600, China |
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| Abstract: | High temperature in summer is one of the important factors restricting the introduction and planting of Hydrangea in Southern China. The study of the physiological and biochemical response mechanism of Hydrangea under high temperature stress has important reference significance for the application of Hydrangea under special site conditions. In this experiment, eight cultivars of Hydrangea were used as materials to determine the physiological and biochemical changes of eight indexes under high temperature stress of 44℃/33℃ (day/night) in an artificial climate box. The results showed that under high temperature stress, the heat damage index of the eight cultivars of Hydrangea showed a rising trend, and the order from high to low was ‘Inspiration’> ‘Tricolor’ > ‘Shakespeare’ > ‘Komachi’ > ‘Essar’ > ‘Elbtal’> ‘Stockings’ > ‘Corsage’. The relative electrical conductivity and malondialdehyde contents of the eight Hydrangea cultivars increased continuously. The contents of relative electrical conductivity and malondialdehyde in leaves of ‘Shakespeare’, ‘Tricolor’ and ‘Komachi’ increased the most, and the contents of relative electrical conductivity and malondialdehyde in leaves of ‘Essar’, ‘Corsage’ and ‘Elbtal’ increased the least. The activities of superoxide dismutase, peroxidase and catalase in the leaves of eight cultivars of Hydrangea were significantly affected by moderate high temperature. The content of soluble sugar changed little in the early stage of high temperature stress, but showed an overall increasing trend. The content of soluble protein increased, and the protein synthesis rates of ‘Tricolor’ and ‘Inspiration’ were the lowest, and the protein synthesis rates of ‘Corsage’ and ‘Elbtal’ were the highest. The content of proline increased, the osmotic regulation ability of ‘Stockings’ and ‘Corsage’ through free proline was significantly stronger than that of other cultivars, and the osmotic regulation ability of ‘Tricolor’ and ‘Inspiration’ through free proline was significantly weaker than that of other cultivars. The contents of soluble sugar, soluble protein and proline of osmotic regulation substances in eight cultivars of Hydrangea were all increased by high temperature stress to adapt to high temperature stress of 43℃/33℃. The fuzzy membership function was used to analyze the comprehensive order of high temperature resistance of 8 Hydrangea cultivars from high to low: ‘Shakespeare’ was the most high temperature resistant variety, followed by ‘Elbtal’, ‘Komachi’, ‘Stockings’, ‘Corsage’, ‘Inspiration’, ‘Essar’, and ‘Tricolor’ was the least high temperature resistant variety. This study provided a theoretical basis for the physiological and biochemical response mechanism of Hydrangea cultivars under high temperature stress and provided reference value for the application of Hydrangea cultivars under special site conditions. |
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| Keywords: | Hydrangea cultivars high temperature stress physiological and biochemical response heat resistance |
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