| 摘要: |
| 金银花具有良好的药用价值和保健功能。为筛选适宜宁夏压砂地种植的金银花品种，本研究依据中卫市沙坡头区兴仁镇硒砂瓜种植区田间持水量，分别设置21.93%、15.47%、10.31%、6.45%、3.87% 5个水分梯度，研究5个土壤水分梯度下四季金银花、红色金银花、北花1号金银花、九丰1号金银花和平邑山花子金银花叶片抗氧化酶活性、渗透调节物质含量变化趋势以及抗旱能力强弱。结果表明：5个金银花品种超氧化物歧化酶(SOD)活性、过氧化物酶(POD)活性、过氧化氢酶(CAT)活性、丙二醛(MDA)含量、脯氨酸(Pro)和可溶性蛋白(SP)含量随干旱胁迫程度增强呈增加趋势。相关性分析表明，干旱胁迫与各生理指标呈显著正相关。隶属函数综合评价得出，抗旱能力为平邑山花子金银花>红色金银花>北花1号金银花>四季金银花>九丰1号金银花。综上，平邑山花子金银花、红色金银花和北花1号金银花可以作为宁夏压砂地金银花抗旱优选品种。我们的研究结果为宁夏压砂地金银花品种的选择提供了理论依据和实践指导。 |
| 关键词: 压砂地 干旱胁迫 金银花 生理生化特征 抗旱性 |
| DOI： |
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| 基金项目:宁夏自然科学基金项目（2022AAC02055）；2022年中央财政林业科技推广示范项目（[2022]ZY09）；宁夏退耕还林工程效益监测项目；宁夏回族自治区第六批科技创新领军人才项目（2020GKLR0100） |
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| Effects of drought stress on physiological and biochemical characteristics of five honeysuckle varieties |
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yanghui, 范金鑫, 黄婷
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Ningxia Academy of Agriculture and Forestry Sciences
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| Abstract: |
| Honeysuckle has good medicinal value and health care function. In order to screen honeysuckle varieties suitable for planting in pressurised sandy land in Ningxia. In this study, five moisture gradients of 21.93%, 15.47%, 10.31%, 6.45% and 3.87% were set based on the field water holding capacity of selenium honeysuckle planting area in Xingren Town, Shapotou District, Zhongwei City. The antioxidant enzyme activity, osmoregulatory substance content and drought tolerance of leaves of Four Seasons honeysuckle, Red honeysuckle, Beiflora No.1 honeysuckle, Jiufeng No.1 honeysuckle and Pingyi Shanhuazi honeysuckle were investigated under the five moisture gradients.The results showed that the superoxide dismutase (SOD) activity, peroxidase (POD) activity, catalase (CAT) activity, malondialdehyde (MDA) content, proline (Pro) and soluble protein (SP) content of five honeysuckle varieties increased with the increase of drought stress. Correlation analysis showed that drought stress was significantly positively correlated with various physiological indexes. According to the comprehensive evaluation of the membership function, the drought resistance ability was Pingyi Shanhuazi honeysuckle > Red honeysuckle > Beiflora No.1 honeysuckle > Four Seasons honeysuckle > Jiufeng No.1 honeysuckle. In summary, Pingyi Shanhuazi honeysuckle, Red honeysuckle and Beiflora No.1 honeysuckle can be used as drought-resistant varieties of honeysuckle in Ningxia gravel-mulched land. Our results provide a theoretical basis and practical guidance for the selection of honeysuckle varieties in pressurised sandy land in Ningxia. |
| Key words: Sand-pressed ground Drought stress Honeysuckle Physiological and biochemical characteristics Drought resistance |
