Articles
INTERACTION OF ETHYLENE AND METHYL JASMONATE ON GUMMOSIS IN GRAPE HYACINTH (MUSCARI ARMENIACUM) BULBS
Article number
886_48
Pages
343 – 349
Language
English
Abstract
The purpose of this study was to know the hormonal regulation of gummosis in grape hyacinth (Muscari armeniacum) plants.
The application of ethylene at 10 and 100 ppm, or an ethylene-releasing compound, ethephon (2-chloroethyl- phosphonic acid), at 1 and 2% (w/w) in lanolin to grape hyacinth bulbs substantially induced gummosis within several days after application.
Methyl jasmonate (JA-Me) alone at concentrations of 0.1 to 2% (w/w) in lanolin had no effect on gummosis in the bulbs.
However, simultaneous application of JA-Me and ethephon extremely stimulated ethephon-induced gummosis.
Gum production in the bulbs induced by ethephon increased according to the maturation of bulbs from April till June, but decreased after that period.
Besides, regardless of the presence of JA-Me the application of ethephon to inflorescence axes of grape hyacinth plants did not induce gummosis.
Based on gummosis in tulips, it is suggested that the principal factor of gummosis in bulbous plants is ethylene or jasmonates, being different in species of bulbous plants, whereas they synergistically interact with each other on gummosis.
The application of ethylene at 10 and 100 ppm, or an ethylene-releasing compound, ethephon (2-chloroethyl- phosphonic acid), at 1 and 2% (w/w) in lanolin to grape hyacinth bulbs substantially induced gummosis within several days after application.
Methyl jasmonate (JA-Me) alone at concentrations of 0.1 to 2% (w/w) in lanolin had no effect on gummosis in the bulbs.
However, simultaneous application of JA-Me and ethephon extremely stimulated ethephon-induced gummosis.
Gum production in the bulbs induced by ethephon increased according to the maturation of bulbs from April till June, but decreased after that period.
Besides, regardless of the presence of JA-Me the application of ethephon to inflorescence axes of grape hyacinth plants did not induce gummosis.
Based on gummosis in tulips, it is suggested that the principal factor of gummosis in bulbous plants is ethylene or jasmonates, being different in species of bulbous plants, whereas they synergistically interact with each other on gummosis.
Authors
K. Miyamoto, M. Sasamoto, J. Ueda, M. Saniewski
Keywords
ethephon (2-chloroethylphosphonic acid), ethylene, grape hyacinth, gummosis, methyl jasmonate, Muscari armeniacum
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