赤霉素对植物种子萌发及幼苗生长影响的研究进展
摘要： 赤霉素（Gibberellins,GAs）作为植物体内广泛存在的一类生长调节剂,参与调控植物种子萌发,下胚轴伸长,叶片伸展,花、果实及种子发育等诸多生理过程。大量研究表明,赤霉素在植物抵抗非生物胁迫中也发挥着重要作用,主要通过调节GAs的生物合成、信号转导及其生物活性,以提高植物对非生物胁迫的耐受性。系统综述了近年来外源赤霉素对植物种子萌发以及幼苗生长发育影响的相关研究,从种子萌发、生理生化特性、相关基因调控等方面进行了系统阐述,旨在为赤霉素在农作物生产中的利用提供参考依据。
关键词: 赤霉素, 种子萌发, 幼苗生理特性, 基因调控
Abstract: Gibberellin （Gibberellins, gas） as a kind of growth regulator widely existing in plants, are involved in the regulation of plant seed germination, hypocotyl extension, leaf extension, the development of the flower, fruit and seed and many other physiological processes. A large number of studies have shown that GAs also play an important role in plant resistance to abiotic stress by regulating the biosynthesis, signal transduction and biological activity of GAs, in order to improve the tolerance of plants to abiotic stress. The recent studies on the effect of exogenous gibberellins on seed germination and the growth and development of seedlings were systematically reviewed, mainly focusing on seed germination, physiological and biochemistry characteristics, and related gene regulation, and an important reference basis for the utilization of the gibberellin in the production of the crops was provided.
Key words: gibberellin, seed germination, seedling physiological characteristics, gene regulation
中图分类号:
Q945
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