3.3 Results with intact plants
The growth responses of three black currant cultivars exposed to temperatures of 9, 15, or 21 °C and natural day-length at Ås from 10 September are shown in Fig. 7. Depending on cultivar and temperature conditions, elongation growth started to level off after 1 to 2 weeks followed by complete growth cessation within a few more weeks. The response was particularly fast in ‘Imandra’ which came to a complete growth cessation after 2 weeks at 21 °C. At lower temperatures, the response was gradually slower so that at 9 °C, growth continued for two more weeks. The same temperature responses were found in ‘Ben Tron’ and ‘Narve Viking’ which followed behind in due course. Thus, growth cessation in ‘Narve Viking’ took five weeks at 9 °C.
3.3 Results with intact plantsThe growth responses of three black currant cultivars exposed to temperatures of 9, 15, or 21 °C and natural day-length at Ås from 10 September are shown in Fig. 7. Depending on cultivar and temperature conditions, elongation growth started to level off after 1 to 2 weeks followed by complete growth cessation within a few more weeks. The response was particularly fast in ‘Imandra’ which came to a complete growth cessation after 2 weeks at 21 °C. At lower temperatures, the response was gradually slower so that at 9 °C, growth continued for two more weeks. The same temperature responses were found in ‘Ben Tron’ and ‘Narve Viking’ which followed behind in due course. Thus, growth cessation in ‘Narve Viking’ took five weeks at 9 °C.
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