摘要
为探究不同豌豆种子萌发对不同类型盐胁迫的响应,以3个豌豆品种为研究对象,利用NaCl、Na_(2)SO_(4)、NaHCO_(3)和复合盐碱等4种盐溶液进行胁迫处理,分析测定了盐胁迫下3个豌豆品种的发芽性状,通过对比分析和隶属函数法对不同盐胁迫下供试豌豆种子的萌发特性进行耐盐性评价。结果表明,随盐浓度增加,3个品种豌豆种子的发芽率、发芽势、芽长、根长呈不同程度下降趋势;3个品种的相对盐害率呈增加趋势,根长和芽长盐害率趋势明显。耐盐半致死浓度的分析结果表明,草原7号对NaCl耐受性最弱;草原23号和青建1号对NaHCO_(3)耐受性最差,3个品种对复合盐碱的耐受性最强;综合评价得出青建1号对4种盐胁迫反应最稳定,适宜在盐碱地种植。
To explore the responses of different Pisum sativum seed germinations to different types of salt stress,taking three Pisum sativum varieties as the research objects,and using four salt solutions,namely NaCl,Na_(2)SO_(4),NaHCO_(3) and compound salt alkali,were subjected to stress treatment.The germination traits of three Pisum sativum varieties under salt stress were analyzed and determined.The salt tolerance strength of the tested Pisum sativum seeds under different salt stress was evaluated through comparative analysis and comprehensive evaluation of membership functions.The results showed that with the increase of salt concentration,the germination rate,germination potential,bud length and root length of the three kinds of Pisum sativum seeds showed a downward trend to varying degrees.The relative salt damage rates of the three varieties showed an increasing trend,and the salt damage rates of root growth and bud growth showed obvious trends.Through the calculation of the semi-lethal concentration of salt tolerance,Caoyuan No.7 had the weakest tolerance to NaCl.Caoyuan No.23 and Qingjian No.1 had the poorest tolerance to NaHCO_(3),while the three varieties had the strongest tolerance to complex saline-alkali.The comprehensive evaluation showed that Qingjian No.1 had the most stable response to four types of salt stress and was suitable for cultivation in saline-alkali land.
作者
葛容琳
徐成体
蒲小剑
赵媛媛
吴文琪
魏晓丽
王伟
GE Ronglin;XU Chengti;PU Xiaojian;ZHAO Yuanyuan;WU Wenqi;WEI Xiaoli;WANG Wei(Qinghai University,Xining 810016,China;Northwest Key Laboratory of Cultivated Land Conservation and Marginal Land Improvement,Ministry of Agriculture and Rural Affairs,Delingha Qinghai 817000,China)
出处
《种子》
北大核心
2025年第5期9-15,共7页
Seed
基金
青海省重大科技专项(2023-NK-A3)。
关键词
豌豆
盐胁迫
种子萌发
隶属函数
Pisum sativum
salt stress
seed germination
membership function
