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吴雨桦, 白斌, 熊福博, 等. 五个核桃品种对干旱胁迫的生理生化响应[J/OL]. 四川林业科技, 2024, 45[2024-05-17]. DOI: 10.12172/202401160001
引用本文: 吴雨桦, 白斌, 熊福博, 等. 五个核桃品种对干旱胁迫的生理生化响应[J/OL]. 四川林业科技, 2024, 45[2024-05-17]. DOI: 10.12172/202401160001
WU Y H, BAI B, XIONG F B, et al. Physiological and biochemical responses of five walnut varieties to drought stress[J/OL]. Journal of Sichuan Forestry Science and Technology, 2024, 45[2024-05-17]. DOI: 10.12172/202401160001
Citation: WU Y H, BAI B, XIONG F B, et al. Physiological and biochemical responses of five walnut varieties to drought stress[J/OL]. Journal of Sichuan Forestry Science and Technology, 2024, 45[2024-05-17]. DOI: 10.12172/202401160001

五个核桃品种对干旱胁迫的生理生化响应

Physiological and biochemical responses of five walnut varieties to drought stress

  • 摘要: 为了解四川省五个主栽核桃品种的抗旱能力。采用自然干旱法对五个品种进行不同干旱时间梯度处理,测定叶片的主要生理生化指标,然后运用主成分分析、隶属函数法等进行综合评价其抗旱能力。五个核桃品种的相关生理生化指标分析结果表明,相对含水量(RWC)、叶绿素含量(Chl)随着干旱时间的延长,呈现下降的趋势;过氧化氢酶(CAT)、过氧化物酶(POD)活性以及丙二醛(MDA)呈现先升后降的趋势,总体表现为上升或者下降;而超氧化物歧化酶(SOD)活性则表现先升后降或逐渐上升的趋势。相关、主成分以及隶属函数法分析结果表明,Chl、MDA、SOD活性三个指标能够综合评价五个核桃品种的抗旱能力。通过测定五个品种的生理生化指标,利用主成分分析法、隶属函数法综合评价得出五个核桃品种的耐旱性大小排序依次为:‘新新 2’>‘温 185’>‘漾濞泡核桃’>‘盐源早’>‘三台泡核桃’。

     

    Abstract: To understand the drought resistance of five main walnut varieties in Sichuan Province. The main physiological and biochemical indexes of the leaves were measured by natural drought treatment, and then the drought resistance was evaluated by principal component analysis and affiliation function method. The analysis result of physiological and biochemical indexes of five walnut varieties showed that, the relative water content and chlorophyll content decreased with the extension of drought time. The activities of catalase, peroxidase and malondialdehyde increased firstly and then decreased, and the overall performance was increased or decreased. The activity of superoxide dismutase increased firstly and then decreased or gradually increased. The results of correlation, principal component and membership function analysis showed that chlorophyll content, malondialdehyde and superoxide dismutase activity could comprehensively evaluate the drought resistance of five walnut varieties. The order of drought tolerance of the five walnut varieties was evaluated by principal component analysis and membership function method, with measuring the physiological and biochemical indexes of the five walnut varieties. The order was as follows: ' Xinxin2' > ' Wen185' > ' Yangbi' > ' Yanyuanzao' > 'Santai'.

     

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