摘要
种子萌发受多种环境因子的影响.足够的水分、适宜的温度和充足的氧气是种子萌发的3个必须条件,光照作为一种重要的环境因子也影响种子萌发[1].内源激素含量和比例以及种子对内源激素的敏感性均影响种子萌发[2].吸胀作为种子萌发的起始阶段,对种子萌发起着至关重要的作用[3].
Water absorption rate and content and ratio of endogenous hormones in seeds of Trollius farreri Stapf during seed imbibition process under light （12 h·d-1of illumination） and dark conditions were studied. The results show that with the increase of imbibition time, water absorption rate of T. farreri seeds under light and dark conditions shows the tendency of“ dramatically increase-slowly increase-stable”. In general, ZT content shows a fluctuation change, GAs and IAA contents first decrease and then increase, and ABA content gradually increases under light condition; under dark condition, ZTcontent first decreases and then increases, while GAs, IAA, and ABA contents show fluctuation changes. Under light anddark conditions, ZT and GAs contents reach the highest values before germination in general, while IAA and ABA contentsreach the highest values during germination. Under light and dark conditions, ZT/ ABA, GAs / ABA, and IAA/ ABA ratiosin seeds with imbibition for 1 d decrease significantly compared with those in seeds without soaking （imbibition for 0 d）. It is suggested that initiation of germination of T. farreri seeds may be due to antagonism of ZT to ABA inhibition effect, but is not related with variations of absolute contents of GAs and ABA.
作者
张雁明
卜海燕
赵迪
徐当会
刘坤
齐威
ZHANG Yanming;BUHaiyan;ZHAO Di;XU Danghui;LIU Kun;QI Wei(State Key Laboratory of Grassland Agro？Ecosystems,School ofLife Sciences,Lanzhou University,Lanzhou 730000,China)
出处
《植物资源与环境学报》
CAS
CSCD
北大核心
2018年第4期104-106,共3页
Journal of Plant Resources and Environment
基金
国家自然科学基金资助项目(41171046,31600329,31670437)
关键词
矮金莲花
种子
萌发
内源激素
吸胀
Trollius farreri Stapf
seed
germination
endogenous hormone
imbibition
