Sequence of flowering and fruit setting in an inflorescence of Citrus cultivars

Flowering sequence and fruit setting were examined in a raceme inflorescence of orange, pummelo and grapefruit cultivars. The flowering sequences in an inflorescence having 4-6 flowers of orange, pummel and grapefruit cultivars revealed similar patterns. The apical flowers opened first fol-lowed by basal flowers and then flowers at the middle part of the inflorescence. The sub-apical flowers opened at the end of flowering period. The frequency of fruit setting in an inflorescence was not affected by the flowering sequences. Flowers among the second to the fourth from the apical flower readily set at higher frequency than the apical and basal flowers.