大麦芒的研究进展

Research Progress in Barley Awn

芒是大麦外稃顶端的针状延续,属于叶的变态,是大麦长期适应环境并进化的产物。大麦芒表型变异丰富,在籽粒灌浆及产量形成等方面存在重要作用,是进一步提升大麦产量的主要靶点之一。在查阅大量文献的基础上,综述了大麦芒的形态、结构、功能以及遗传调控机制的研究进展,讨论了大麦芒对提升大麦产量的积极作用和不利影响,提出了大麦芒光合作用研究中仍需解决的难点和需要关注的重点,为大麦品种选育过程中芒型的选择以及高产大麦品种的选育提供参考。

The awn,developing as a long slender extension of the lemma,is a reduced leaf and the product of long-term adaptation to the environment and evolution.Barley awn is rich in phenotypic variation,which plays an important role in grain filling and yield formation,and is one of the main targets for further improving barley yield.In this paper,we reviewed the research progress in the morphology,structure,function and genetic regulation mechanism of barley awn,discussed the positive and negative effects of barley awn on increasing barley yield,and put forward the difficulties that still need to be solved and the key points that need to be paid attention to in the study of barley awn photosynthesis,so as to provide a useful reference for the selection of barley awn types in the breeding process of barley varieties and the breeding of high-yield barley varieties.