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- Author or Editor: Hesham A. Abdel-Gawad x
Abstract
Forty days after treatment with 14 C-ethephon 23.6% of the applied radioactivity was recovered from the total fruit. The level was reduced to 19.0% after 95 days as a result of lower radioactivity in the extracted fruit; the surface level remained constant. Radioactive metabolites noted by 40 days after treatment were still prominent by 95 days.
Abstract
14C-ethephon applied to a walnut leaflet penetrated and translocated rapidly in young plants, but more slowly in older plants. The compound translocated to the kernel at higher levels when applied to a leaflet than when applied to the hull but in both cases levels of activity were low. Between 5 and 7 days after application the radioactivity in the kernel decreased markedly, 14C-ethephon in the leaves, hull, shell, and kernel was metabolized, but no side products remained in the plant tissue that could be detected by the techniques employed.