聚乙二醇胁迫下3个油橄榄品种生理指标响应

doi:10.12302/j.issn.1000-2006.202208063

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南京林业大学学报（自然科学版） ›› 2024, Vol. 48 ›› Issue (2): 137-143.doi: 10.12302/j.issn.1000-2006.202208063

聚乙二醇胁迫下3个油橄榄品种生理指标响应

杜晋城¹(), 李欣欣¹, 王泽亮¹, 刘偲², 钟毅¹, 王丽华¹^,^*()

1.四川省林业科学研究院,四川成都 610081
2.四川省林业和草原科学技术推广总站,四川成都 610082

收稿日期:2022-08-28 修回日期:2022-09-20 出版日期:2024-03-30 发布日期:2024-04-08
通讯作者: *王丽华(381204060@qq.com),助理研究员。
作者简介:杜晋城(78830818@qq.com),副研究员。
基金资助:
四川省科技计划项目(2021YFYZ0032);国家重点研发计划(2019YFD1001205);四川省科技厅科研院所成果转化项目(2021JDZH0016)

Response of physiological indexes of three Olea europaea cultivars to PEG stress

DU Jincheng¹(), LI Xinxin¹, WANG Zeliang¹, LIU Si², ZHONG Yi¹, WANG Lihua¹^,^*()

1. Sichuan Academy of Forestry Science, Chengdu 610081, China
2. Sichuan Province Forestry and Grassland Science and Technology Extension General Station, Chengdu 610082, China

Received:2022-08-28 Revised:2022-09-20 Online:2024-03-30 Published:2024-04-08

摘要/Abstract

摘要：

【目的】比较四川盆地3个主栽油橄榄(Olea europaea)品种[‘豆果’ (‘Arbeqina’)、‘柯基’(‘Koroneiki’)和‘阿布桑娜’(‘Arbosana’)]持续干旱胁迫时叶片相关生理生化响应特征,为因地制宜地引进和栽培油橄榄优良品种提供依据。【方法】以‘豆果’‘柯基’‘阿布桑娜’为研究对象,利用质量分数5%、10%、15%、20%和30%的聚乙二醇(PEG-6000)溶液处理模拟为期35 d持续干旱胁迫,对其叶片相应生理生化指标进行分析测定和评价。【结果】随着渗透胁迫程度的加剧和时间的延长,3个油橄榄品种间叶片的功能性状表现出了一定的种间差异性,各油橄榄品种叶片卷曲、失绿,叶绿素(Chl)含量呈下降趋势,脯氨酸(Pro)含量大幅度升高;同时3个品种油橄榄叶片过氧化物酶(POD)、超氧化物歧化酶(SOD)活性表现出升高的趋势。品种间相比较,随着渗透胁迫程度的加剧和时间的延长,‘柯基’叶片卷曲、失绿及叶绿素含量减少幅度较小,Pro含量增加幅度较大,叶片POD、SOD酶活性上升幅度较大。【结论】 3个油橄榄品种在不同干旱持续胁迫下叶片功能性状差异较大,表现出不同的适应特性,3个品种中叶片的功能性状优异性排序为:‘柯基’> ‘阿布桑娜’>‘豆果’。供试油橄榄品种中‘柯基’表现出较强的渗透调节能力和抗氧化能力,对干旱胁迫的适应性较强,优于‘阿布桑娜’和‘豆果’。

关键词: 油橄榄, 干旱胁迫, 聚乙二醇胁迫, 叶片生理生化特性, 四川省

Abstract:

【Objective】 The physiological and biochemical response characteristics of leaves under continuous drought stress in three main cultivars of Olea europaea (‘Arbeqina’‘Koroneiki’ and ‘Arbosana’) in the Sichuan Province were compared to provide a basis for the cultivation and introduction of excellent varieties of olive according to local conditions. 【Method】 Taking ‘Arbeqina’‘Koroneiki'and ‘Arbosana’ as the research objects, polyethylene glycol 6000 (PEG-6000) solutions with mass ratio of 5%, 10%, 15%, 20%, and 30% were used to simulate continuous drought stress for 35 days. The corresponding physiological indicators of the leaves were analyzed, measured, and evaluated.【Result】 Over time with the deepening of osmotic stress, the functional traits of leaves among the three oleifera cultivars displayed certain interspecific differences. At the same time, the peroxidase (POD) and superoxide dismutase (SOD) activities in the leaves of the three cultivars of olive oil displayed an increasing trend. Compared with the cultivars, over time with the deepening of osmotic stress, the chlorophyll content of ‘Koroneiki’ decreased slightly, the proline content increased significantly, and the POD and SOD activities in leaves increased significantly. 【Conclusion】 The leaf function traits of the three olive varieties under different levels of continuous drought stress varied greatly, displaying different adaptive characteristics. Among the three varieties, the leaf function traits followed the order of ‘Koroneiki’>‘Arbosana’>‘Arbeqina’. Among the tested olive varieties, ‘Koroneiki’ had a strong osmotic adjustment ability and antioxidant capacity, and a strong adaptability to drought stress, being superior to ‘Arbosana’ and ‘Arbeqina’.

Key words: Olea europaea, drought stress, PEG stress, physiological properties of leaves, Sichuan Province

中图分类号:

S718

杜晋城,李欣欣,王泽亮,等. 聚乙二醇胁迫下3个油橄榄品种生理指标响应[J]. 南京林业大学学报（自然科学版）, 2024, 48(2): 137-143.

DU Jincheng, LI Xinxin, WANG Zeliang, LIU Si, ZHONG Yi, WANG Lihua. Response of physiological indexes of three Olea europaea cultivars to PEG stress[J].Journal of Nanjing Forestry University (Natural Science Edition), 2024, 48(2): 137-143.DOI: 10.12302/j.issn.1000-2006.202208063.

图/表 5

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聚乙二醇胁迫下3个油橄榄品种生理指标响应

Response of physiological indexes of three Olea europaea cultivars to PEG stress

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