Year: 1998
Type: dissertation
Abstract: 6-benzylaminopurine (BA), which was applied at the 10 mm stage of fruit development at 50 and 100 mg.liter'1 to 'McIntosh' apples (Malus domestica Borkh), effectively thinned fruit, and increased fruit size and caused seed abortion.Regardless of BA treatment, there were two distinguishable peaks of fruit abscission during 'June drop' on 'Morespur McIntosh' apples .There was a large peak about 14 days after treatment and a second smaller one 24 days after treatment.The first abscission peak was increased by BA, and approximately half of then existing fruit abscised from treated trees between 10 and 14 days after treatment, whereas only one fourth abscised from the control trees.The number of seeds per fruit was lower in abscising fruit than in persisting fruit regardless of BA treatment.Seed number of abscising fruit was increased linearly by BA application.BA enhanced the translocation of 14C-sorbitol from leaves to fruit when applied directly to the fruit, but not when applied directly to the leaves.Therefore, it is unlikely that BA thinned apple fruit directly through restricting the translocation of photosynthates moving from leaves to fruit.
DOI: 10.7275/20483329
Author: Yuan, Rongcai
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W135431035