The effects of treatment with 1-methylcyclopropene (1-MCP, the inhibitor of ethylene receptors) of 7-day-old wheat (Triticum durum Desf., cv. Bezenchukskaya 139) seedlings on growth characteristics, water relations, and the content of phytohormones during three days after watering cessation were studied. In treated seedlings, a decrease in the water content in the substrate resulted in a decrease in stomatal conductance in the leaves by one day earlier than in untreated seedlings. This could be related to the more rapid and substantial accumulation of ABA in treated plants. There was no clear relationship between changes in the content of cytokinins and water relations under the influence of 1-MCP under drought conditions. The role of ethylene and ABA in the regulation of growth and water relations in plants suffering from water deficit is discussed.
Russian Journal of Plant Physiology – Springer Journals
Published: Jun 15, 2012
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