南京林业大学学报（自然科学版）2024，Vol.48Issue(2)：137-143,7.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
Response of physiological indexes of three Olea europaea cultivars to PEG stress
摘要
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'.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Key words
Olea europaea/drought stress/PEG stress/physiological properties of leaves/Sichuan Province分类
农业科技引用本文复制引用
杜晋城,李欣欣,王泽亮,刘偲,钟毅,王丽华..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):137-143,7.基金项目
四川省科技计划项目(2021YFYZ0032) （2021YFYZ0032）
国家重点研发计划(2019YFD1001205) （2019YFD1001205）
四川省科技厅科研院所成果转化项目(2021JDZH0016). （2021JDZH0016）
