Balance of endogenous plant hormones in winter wheat ear after induction of ethylene production increase
1997
Mlady, M. | Jurekova, Z. (University of Agriculture, Nitra (Slovakia). Dept. of Plant Physiology)
The content of free beta-indolylacetic acid (IAA), zeatin (Z), zeatin riboside (ZR), isopentenyl adenosine (iP), isopentyl adenine (iPA) and endogenous ethylene production in winter wheat ear in the milk development phase was investigated. The plants used for measurement were sprayed with water solutions of IAA, silver thiosulphate (STS) and combinations of same. All treatments resulted in the increasing of ethylene release from the ears. According to data on the balance of plant hormones in the ear, it is supposed that influence of treatments on ethylene release could also be mediated by free IAA level changes. One of the other ways could be a direct influence of cytokinins on ethylene synthesis or their effect in combination with auxins
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