Abstract
Buds from 12-year-old `Bing' sweet cherry trees were collected biweekly from May 25, 1989 to August 31, 1989 and periodically therafter until the spring of 1990. Buds were partially dissected by removing outer bud scales, then fixed in a solution of 3% glutaraldehyde and 2% formaldehyde for 24 hrs. The buds were then stored in phosphate buffer solution at 6.8 pH at 4C for a maximum of 6 months. Buds examined with the SEM were critical point dried, mounted and coated with gold. Anthesis occurred April 28 and fruit were harvested July 6. Rapid changes in the development of the buds occurred during the period between July 7 and July 20. Flower primordia were just barely visible on July 7 in the most advanced buds but by July 20 multiple flowers were visible with sepal primordia apparent. By Aug 3 petals were clearly defined and stamen primordia evident. By August 17 anthers were clearly visible and pistil primordia were evident. Most buds produced 2 flowers with some producing a third. The third flower trailed the other two buds in development.
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