盐生植物萌发期对盐胁迫的适应研究进展

Research Progress on the Adaptation of Halophytes to Salt Stress in Germination Stage

中文关键词:  盐生植物  种子  盐胁迫  干旱胁迫

英文关键词:Halophytes  Seed  Salt stress  Drought stress

中文摘要:

      目前我国盐渍土地面积较大,尤其是青藏高原的盐渍地,常伴有干旱、半干旱的生境,导致植物不易生长,生态环境相对恶劣,这种生态现状亟待解决。盐生植物具有一定的耐盐性和耐旱性,是改善盐渍地的首选植物,种子的活力决定了种子萌发的情况,多数学者为改善严峻的生态环境开始了盐生植物引种的研究。测定种子活力有直接方法和间接方法,大多数学者采用的是直接方法,即在实验室模拟一定条件直接测定萌发率。简述了盐生植物的概况、制造胁迫的主要方法以及检测种子活力的指标,综述了近年来不同学者对盐爪爪、白刺等具有代表性的22种盐生植物在种子萌发期的耐盐性以及抗旱性的相关研究,为改善盐渍地的生态环境、提升盐渍地的生产量提供了理论基础。

英文摘要:

      At present,the area of saline land in our country is relatively large,especially on the Qinghai-Tibet Plateau,which is often accompanied by arid and semi-arid habitats,making it difficult for plants to grow and the ecological environment is getting worse.This ecological status quo needs to be resolved urgently.Halophytes have a certain degree of salt tolerance and drought tolerance.They are the preferred plants to improve saline soil.The vigor of seeds determines the germination of seeds.Most researchers studied on introduction of halophytes in order to improve the severe ecological environment.There are direct methods and indirect methods to determine seed vigor.Most researchers use direct methods,that is,simulating certain conditions in the laboratory to directly determine the germination rate.This paper briefly describes the general situation of halophytes,the main methods for producing stress,and the indicators for detecting seed vigor,and summarizes the opinions on 22 typical halophytes such as salt claw and Nitraria during seed germination.The study on salt tolerance and drought resistance provides a theoretical basis for improving the ecological environment of saline land and increasing the production of saline land.