摘要
为鉴定干旱胁迫对高油酸花生品种幼苗生长的影响,选用8个高油酸花生品种为试验材料,采用室内水培法,在花生苗期进行PEG模拟干旱胁迫,研究不同高油酸花生品种根系和叶片形态及生理特性的变化。结果表明,PEG模拟干旱胁迫下,高油酸花生根系形态参数相对值和根系活力相对值提高,从而提高了生物量抗旱系数。干旱胁迫会降低花生的根长、根表面积、根体积、根尖数、根系活力、地上部干重、根系干重和总干重,提高根冠比,高油酸小花生品种根系活力下降程度大于普通油酸含量花生品种,高油酸大花生品种根系指标下降程度小于普通花生。高油酸花生品种花育9113、山花21号、开农308、冀花11具有较好的抗旱性。
To identify the effects of drought stress on the seedling growth of high-oleic acid peanut varieties,this research selects eight high-oleic acid peanut cultivars as experimental materials,uses a hydroponic system in a laboratory and applies PEG-simulated drought stress during the seedling stage to analyze changes in root and leaf morphological and physiological characteristics across different high-oleic acid peanut cultivars.The results show that under PEG-simulated drought stress,the relative values of root morphological parameters and root activity in high-oleic acid peanuts increase,thereby enhancing the drought resistance coefficient of biomass.Drought stress significantly reduces root length,root surface area,root volume,root tip number,root activity,shoot dry weight,root dry weight,and total dry weight,while increasing the root-to-shoot ratio.Notably,small high-oleic acid peanut cultivars show a more pronounced decline in root activity than conventional oleic acid peanut cultivars,whereas large high-oleic acid peanut cultivars exhibit less reduction in root-related indices compared to conventional peanuts cultivars.Among the tested cultivars,Huayu 9113,Shanhua 21,Kainong 308,and Jihua 11 exhibit relatively strong drought resistance.
作者
刘瑞琦
宿宛玉
王恒斌
刘风珍
骆璐
谷明轩
万勇善
张昆
LIU Rui-qi;SU Wan-yu;WANG Heng-bin;LIU Feng-zhen;LUO Lu;GU Ming-xuan;WAN Yong-shan;ZHANG Kun(College of Agronomy/Shandong Agricultural University,Tai’an 271018,China;Seed Technology Extension Service Center of Linshu County,Linyi 276700,China)
出处
《山东农业大学学报(自然科学版)》
北大核心
2026年第1期46-55,共10页
Journal of Shandong Agricultural University:Natural Science Edition
基金
山东省重点研发计划(2023TZXD007)
国家现代农业产业技术体系资助(CARS-13)。
关键词
高油酸花生
PEG胁迫
根系形态
生理特性
High-oleic peanuts
PEG stress
root morphology
physiological characteristics
