中国农学通报2026，Vol.42Issue(14)：46-56,11.
不同花生品种苗期耐盐性比较及生理响应机制解析
Comparison of Salt Tolerance at Seedling Stage and Analysis of Physiological Response Mechanism in Different Peanut Varieties
摘要
Abstract
To compare the salt tolerance of 8 peanut varieties in Xinbaihua series under salt stress and analyze their physiological response mechanism.In this study,different peanut varieties were treated by hydroponics for 7 days respectively under 300 mmol/L NaCl stress.The plant height,biomass(fresh and dry weight)and root morphological indicators of each variety were measured,and the salt tolerance was comprehensively evaluated by membership function methods.Based on above results,4 varieties with the greatest differences in salt tolerance were selected,and the physiological indexes,such as leaf chlorophyll content,reactive oxygen species(ROS)content and antioxidant enzyme activity were determined.The results showed that salt stress inhibited the plant height,biomass and root growth of each variety significantly.Among them,the inhibition of'Xinbaihua 25'was the lowest,and its plant height,fresh weight,dry weight and total root length decreased by 14.29%,53.69%,29.64%and 43.63%,respectively;while'Xinbaihua 15'was the most severely suppressed,corresponding indicators significantly decreased by 32.19%,68.94%,37.72%and 54.82%.The comprehensive evaluation results combined with membership function showed that the salt tolerance of'Xinbaihua 25'was the strongest,followed by'Xinbaihua 27',and the salt tolerance of'Xinbaihua 15'and'Xinbaihua 17'were the worst.The results of physiological indexes showed that compared with'Xinbaihua 15'and'Xinbaihua 17',the contents of O2-,H2O2 and MDA in leaves of'Xinbaihua 25'and'Xinbaihua 27'with strong salt tolerance were significantly decreased,while the contents of chlorophyll and the activities of POD,CAT and APX were increased.This phenomenon showed that peanut varieties with strong salt tolerance had stronger antioxidant capacity and photosynthetic capacity,thus alleviating the inhibition of salt stress on peanut growth.In short,the salt tolerance of 8 peanut varieties are compared and analyzed systematically,which provide theoretical basis and germplasm resources for further studying the molecular mechanism of their response to salt stress and cultivating salt-tolerant varieties.关键词
花生/盐胁迫/耐盐性/活性氧/抗氧化酶Key words
peanut/salt stress/salt tolerance/reactive oxygen species/antioxidant enzyme分类
农业科技引用本文复制引用
邵梦瑶,孔祥军,贾佩佩,李恒彬,闫思慧,孙辰昕,李丽杰,李增强,张志勇..不同花生品种苗期耐盐性比较及生理响应机制解析[J].中国农学通报,2026,42(14):46-56,11.基金项目
中原科技创新领军人才项目"褪黑素调控棉花和花生氮效率的miRNAs机制与应用"(214200510021) （214200510021）
河南省科技研发计划联合基金(学科类)"NADPH氧化酶基因负调控花生耐盐性的转录机制研究"(252301420129) （学科类）
河南省科技攻关项目"NADPH氧化酶基因AhRbohB6调控花生耐盐性的功能解析及耐盐新种质创制"(262102111132). （262102111132）
