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Chill; Time to relax?


Measham, PF, Chill; Time to relax?, Cherries Australia, Horticulture Australia Limited, February (2013) [Magazine Article]


Fruit trees enter a dormant state during winter in order to protect vegetative and reproductive organs from harmful conditions such as cold temperatures, and an important factor in the release of dormancy is the accumulation of winter chill. Deciduous fruit trees such as cherries require exposure to cold temperatures over winter to achieve chilling requirement and allow normal bud development. There is limited knowledge in both physiological and genetic processes during this period for cherry trees; fruit production relies heavily on general observations and grower’s perception. In general, cherry requirement for chill ranges from 20 to 80 Dynamic Chill Portions (CP) or from 300 to 1500 Chill Hours (CH) (depending on model used and variety). However, as different varieties require different amounts of chill, and this amount has not always been quantified, greater knowledge of winter chill is needed. Without this decision making about variety selection becomes difficult, especially in a time of a changing climate.

Item Details

Item Type:Magazine Article
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Horticultural production
Research Field:Horticultural crop growth and development
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural crops
Objective Field:Pome fruit, pip fruit
UTAS Author:Measham, PF (Dr Penny Measham)
ID Code:82790
Year Published:2013
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2013-02-19
Last Modified:2013-04-10

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