Articles
THE EFFECTS OF ROOT ZONE HEATING IN CONJUNCTION WITH STANDARD AND COOL NIGHT CONDITIONS ON THE GROWTH OF CHRYSANTHEMUMS
Article number
148_110
Pages
843 – 852
Language
Abstract
Chrysanthemum plants (chrysanthemum morijolium cv.
May Shoesmith) exhibited modified growth in response to root zone heating.
The response was dependent on night time air temperature.
Root zone heating with standard air temperatures (17°C) caused an overall reduction in plant size.
The reduction is reflected in plant height, as well as fresh and dry weights of leaves and stems.
Axillary shoots in non-disbudded plants were also smaller with root zone warming.
Earliness was enhanced, however, with root zone warming.
May Shoesmith) exhibited modified growth in response to root zone heating.
The response was dependent on night time air temperature.
Root zone heating with standard air temperatures (17°C) caused an overall reduction in plant size.
The reduction is reflected in plant height, as well as fresh and dry weights of leaves and stems.
Axillary shoots in non-disbudded plants were also smaller with root zone warming.
Earliness was enhanced, however, with root zone warming.
Root zone warming with cool night air temperatures enhanced plant size when root temperatures was less than those measured in control plants from standard night conditions.
When root temperature exceeded the control temperature under standard night conditions a decrease in overall growth was observed.
Bud weight increased with root zone heating under cool night conditions.
Authors
R. J. McAvoy, Harry W. Janes
Keywords
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