西藏青稞抗旱研究进展

Research progress on drought resistance of highland barley in Xizang

干旱是作物生产的主要非生物逆境之一,对作物的产量和品质影响很大,严重阻碍作物的生产和可持续发展。青稞是西藏人民的主要粮食作物和牲畜饲料。然而,西藏青稞大部分种植区是属于干旱、半干旱区域,且年降水分配不均,其生产受干旱胁迫的影响较为严重。近年来,很多学者对干旱胁迫下青稞形态、生理、分子应答机制进行了大量的研究,并取得了一些重要的成果。通过对前人相关研究的总结,文章从干旱胁迫条件下青稞形态和产量的变化、生理生化特征、遗传学和基因组学以及未来研究方向四个方面对青稞抗旱相关的研究进展进行了概述。

Drought is one of the major abiotic stresses in crop production,which has great impact on the yield and quality of crops,and seriously hinders the production and sustainable development of crops.Highland barley is the main food crop and livestock fodder for the people in Xizang.However,most of the highland barley planting areas in Xizang are arid and semi-arid areas,and the annual precipitation is unevenly distributed,and its production is seriously affected by drought stress.In recent years,many scholars have conducted a lot of research on the morphological,physiological and molecular response mechanisms of highland barley under drought stress,and have achieved some important results.Based on the summary of previous studies,this paper summarizes the research progress related to drought resistance of highland barley from four aspects,including changes in morphology and yield,physiological and biochemical characteristics,genetics and genomics,and future research directions of highland barley under drought stress.