The Boron Content of Developing Pear, Apple and Cherry Flower Buds1

Abstract

Abstract Fruit buds of pear, apple and cherry, collected between the late dormant period and petal fall, were separated into their various parts and analyzed for B. Generally, the B content of the tissues reflected the amount in the soil. Total B increased gradually as the bud enlarged and then rapidly as the flower opened to full bloom. In many of the flower parts the B level was high. During the bloom period, the blossom parts (styles, petals, sepals, anthers, filaments and receptacles) contained more B than the leaves and pedicels.