INTERRELATIONS BETWEEN GIBBERELLIC ACID, CYTOKININS AND ABSCISIC ACID IN RETARDING LEAF SENESCENCE
INTERRELATIONS BETWEEN GIBBERELLIC ACID, CYTOKININS AND ABSCISIC ACID IN RETARDING LEAF SENESCENCE
复制标题
DOI：
10.1111/j.1399-3054.1971.tb06720.x
复制
发表时间：
1971-01-01
影响因子：
6.4
通讯作者：
RICHMOND, AE
中科院分区：
文献类型：
--
作者：
BACK, A;RICHMOND, AE
研究了脱落酸（阿坝）、细胞分裂素和赤霉素延缓叶片衰老的相互关系。将蒲公英、酸模和旱金莲的叶圆片漂浮在细胞分裂素或GA溶液中，并加入一定量的阿坝。五天后，提取叶绿素并通过分光光度法估计其含量。脱落酸和细胞分裂素的作用之间的相互关系不同于阿坝和赤霉素的作用之间的关系。脱落酸对GA的延缓衰老作用的抑制作用大于细胞分裂素。高浓度的细胞分裂素抵消了低浓度阿坝的衰老促进作用。GA不能逆转阿坝的作用。
The interrelation between the effects of abscisic acid (ABA) and the effects of cytokinins and gibberellic acid in retarding leaf senescence was investigated. Leaf discs from plants ofTaraxacum megallorrhizon, Rumex pulcberandTropaeolum majuswere floated on solutions of cytokinin or GA to which given amounts of ABA were added. After five days, chlorophyll was extracted and the amount estimated spectrophoto‐metrically. The interrelation between the effects of abscisic acid and cytokinins differed from that between the effects of ABA and gibberellic acid. Abscisic acid reduced the senescence retarding effect of GA more than that of cytokinins. A high concentration of cytokinins nullified the senescence enhancing effect of low concentrations of ABA. GA did not reverse the effects of ABA.