Alvim R, Hewett E W, Saunders P F
Department of Botany and Microbiology, University College of Wales, Aberystwyth, Wales.
Plant Physiol. 1976 Apr;57(4):474-6. doi: 10.1104/pp.57.4.474.
Changes in levels of abscisic acid (ABA) and cytokinin activity in the xylem sap of willow (Salix viminalis, L.) were followed throughout two growth cycles.Growth in spring was preceded by decreasing levels of ABA and an increase in cytokinin activity. The onset of dormancy was associated with low levels of cytokinins and high contents of ABA. A second peak of ABA was found in July which was not related to the dry weight of the sap. The main cytokinin activity in the sap was due to a zeatin riboside-like compound.
在两个生长周期内，对柳树（垂柳，L.）木质部汁液中脱落酸（ABA）水平和细胞分裂素活性的变化进行了跟踪研究。春季生长之前，ABA水平下降，细胞分裂素活性增加。休眠的开始与细胞分裂素水平低和ABA含量高有关。7月发现了ABA的第二个峰值，这与汁液的干重无关。汁液中的主要细胞分裂素活性归因于一种类似玉米素核糖苷的化合物。
