ISHS Acta Horticulturae 175: Symposium on Physiology of Productivity of Subtropical and Tropical Tree Fruits
FLOWERING IN KIWIFRUIT (ACTINIDIA DELICIOSA LIANG ET FERGUSON): POSITIONAL EFFECTS AND DEVELOPMENT. |
| Authors: | A. Snowball, J. Considine |
| Abstract:
The dormant kiwifruit bud contains a number of single primordia in axillary positions which remain uncommitted throughout the quiescent period. During bud burst, up to six of the primordia in the basal ten nodes may initiate flower parts, but not all of these develop fully. Generally, the greatest abortion of initiated flowers occurs in the most basal nodes resulting in persistent primordial remnants or malformed flowers which set fruit of inferior quality. The distribution of flower buds is similar in field grown shoots and in isolated cuttings grown in solution culture. However under certain conditions primordia in potentially axillary positions form vegetative structures instead of the expected floral organs. In this study, the development of axillary structures in young shoot buds were examined and compared with that observed on fully developed shoots on cuttings and in the field. The developmental sequences leading either to reproductive or vegetative organ development are described. | |
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