Articles
THE EFFECT OF TEMPERATURE ON THE VEGETATIVE GROWTH AND REPRODUCTIVE DEVELOPMENT OF THE PRIMOCANE FRUITING RASPBERRY ‘AUTUMN BLISS’
Article number
505_23
Pages
185 – 190
Language
Abstract
An experiment was carried out under semi-controlled environmental conditions to determine the effect of temperature on the rate of vegetative and reproductive development in the primocane fruiting raspberry ‘Autumn Bliss’. Plants were grown in 5 glasshouse compartments with heating set point temperatures of 10, 14, 18, 22, 26 °C and venting set points 4 °C higher under a 16 hour daylength.
Vegetative and reproductive development were recorded weekly.
The rate of node production was highly temperature dependent increasing to an optimum temperature of 22 °C and declining thereafter.
The rate of progress to first pick increased with temperature to an optimum temperature of 22.4 °C and also declined at temperatures above this.
Further analysis indicated that first pick occurred after the accumulation of 2300 Ced (effective day degree) above a base temperature of 1.7 °C. The use of these data to develop a predictive model for the time of fruiting of ‘Autumn Bliss’ is discussed.
Vegetative and reproductive development were recorded weekly.
The rate of node production was highly temperature dependent increasing to an optimum temperature of 22 °C and declining thereafter.
The rate of progress to first pick increased with temperature to an optimum temperature of 22.4 °C and also declined at temperatures above this.
Further analysis indicated that first pick occurred after the accumulation of 2300 Ced (effective day degree) above a base temperature of 1.7 °C. The use of these data to develop a predictive model for the time of fruiting of ‘Autumn Bliss’ is discussed.
Publication
Authors
J. Carew, P. Hadley, N. Battey, J. Darby
Keywords
Rubus idaeus, modelling, effective temperature, flowering, crop prediction
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