1. Relation between growth conditions and dormancy of seed potatoes. 2. Effects of temperature.
- Author
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Ittersum, M. and Scholte, K.
- Abstract
In two indoor experiments under short day conditions, the effect of temperature during tuber bulking on dormancy of tubers was investigated for cvs Diamant and Désirée. Temperature treatments started after tuber initiation and lasted for 4 weeks, after which the haulm was removed. In Experiment 1, the day/night temperature regimes 18/12, 22/22, 26/18 and 32/12 °C (T18/12 etc.) were compared. In Experiment 2, three day temperatures (18, 24 and 30 °C) were combined with three night temperatures (12, 18 and 24 °C), resulting in nine treatments. The dormancy of cv. Diamant was shortest after very high day temperatures (30-32 °C), but intermediate day temperatures (22-26 °C) had no shortening effect compared to T18/12. Dormancy of cv. Désirée was not shortened, but rather tended to be prolonged by high temperatures (22-32 °C) during growth. High temperatures during growth resulted in more sprouts per tuber after dormancy had ended. [ABSTRACT FROM AUTHOR]
- Published
- 1992
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