Peach Fruit Abscission and Pollen Germination as Influenced by Ethylene and 2-chloroethane Phosphonic Acid1
Open Access
- 1 May 1969
- journal article
- Published by American Society for Horticultural Science in Journal of the American Society for Horticultural Science
- Vol. 94 (3) , 327-329
- https://doi.org/10.21273/jashs.94.3.327
Abstract
2-Chloroethane-phosphonic acid (CEPA), applied as a spray to 5-year-old ‘Maygold’ peach trees in the 80% to full bloom stage, effectively thinned blossoms and young fruit and was accomplished without severe gumming or dwarfing of subsequent vegetative growth. The reaction time required to obtain abscission (9 days) indicated that CEPA interfered with processes leading to sexual fertilization. Laboratory studies of the influence of CEPA and ethylene on pollen germination and pollen tube growth indicated that these 2 processes were not inhibited, except from exposure to high concentrations (100 to 1000 ppm) for several hours. At low concentrations (.01 to 10 ppm) both processes were stimulated.Keywords
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