2018年12月16日 星期日
矮金莲花种子吸胀过程中内源激素含量的变化
Change in endogenous hormone content during seed imbibition process of Trollius farreri
2018年 第27卷 第4期 页码[104-106]
Abstract

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-1 of 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, ZT content first decreases and then increases, while GAs, IAA, and ABA contents show fluctuation changes. Under light and dark conditions, ZT and GAs contents reach the highest values before germination in general, while IAA and ABA contents reach the highest values during germination. Under light and dark conditions, ZT/ABA, GAs/ABA, and IAA/ABA ratios in 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.
 

关键词矮金莲花; 种子; 萌发; 内源激素; 吸胀
Key wordsTrollius farreri Stapf; seed; germination; endogenous hormone; imbibition
作者张雁明, 卜海燕, 赵迪, 徐当会, 刘坤, 齐威
所在单位兰州大学生命科学学院 草地农业生态系统国家重点实验室, 甘肃 兰州 730000
点击量58
基金项目国家自然科学基金资助项目(41171046; 31600329; 31670437)