Effects of photoperiod on kinetin-induced tuberization of isolated potato stolons culturedin vitro |
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| Authors: | A M Pelacho A M Mingo-Castel |
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| Institution: | 1. Dept. of Plant Production, Agronomical Engineering School, Polytechnical University of Catalonia, Rovira Roure, 177, 25006, Lérida, Spain
2. Dept. Agricultural Production, Public University of Navarra, Sadar, 31006, Pamplona, Spain
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| Abstract: | Are short-day (SD) conditions inductive or permissive for potato tuberization? This question was addressed using anin vitro culture system. Kinetin induction ofin vitro tuberization in potato stolons cultured in the dark can be partially inhibited by light treatments. Photoperiod required for a major inhibition varied with cultivars: 8 hours for cv. Red Pontiac and 16 hours for cv. Kennebec. Short photoperiods decreased kinetininduced tuberization for all cultivars. Stolons cultured on kinetin-free medium generally did not tuberize, regardless of light treatment. Effects of kinetin and photoperiod on stolon and tuber development are observed. Relationships among kinetin, photoperiod and tuber-inducing stimulus produced under short days are discussed. |
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