ISHS Acta Horticulturae 409: IV International Symposium on Growing Temperate Zone Fruits in the Tropics and in the Subtropics
THE EFFECT OF ROOT TEMPERATURE ON BUD DORMANCY RELEASE OF PERSIMMON (DIOSPYROS KAKI L.). |
| Author: | A. D. Mowat |
| DOI: | 10.17660/ActaHortic.1995.409.16 |
| Abstract:
The role of root temperature on bud dormancy in persimmon (Diospyros kaki L.) was investigated using two year old container grown persimmon seedlings. The seedlings were placed in a controlled temperature environment after leaf fall. Shoots were maintained at a constant temperature of 23°C and the roots were exposed to four constant root temperature treatments; 7°, 10°, 13° and 23°C. The duration of dormancy was 23 days at a root temperature of 13°C. The duration of dormancy was extended up to 16 days by higher and lower root temperature treatments. The duration of budburst was longest under a root temperature of 7°C in comparison to higher root temperature treatments. The greatest proportion of buds that burst occurred under a root temperature of 13°C. The experiment demonstrated that root temperature influences the length of dormancy in persimmon the duration of budburst and the percentage of buds that break dormancy. The results indicate that the timing of bud burst in persimmon could be more strongly influenced by the root environment rather than the bud environment. | |
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