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http://dx.doi.org/10.7744/cnujas.2013.40.4.271

Effect of harvesting time and night temperature on tuber production of calla (Zantedeschia)  

Nam, Chun-Woo (National Institute of Horticultural and Herbal Science, RDA)
Yoo, Dong-Lim (National Institute of Crop Science, Highland Agriculture Research Center, RDA)
Kim, Su-Jeong (National Institute of Crop Science, Highland Agriculture Research Center, RDA)
Suh, Jong-Teak (National Institute of Crop Science, Highland Agriculture Research Center, RDA)
Paek, Kee-Yoeup (Chungbuk Research Center for the Development of Advanced Horticultural Technology, Chungbuk National University)
Lee, Sang Gyu (National Institute of Horticultural and Herbal Science, RDA)
Yoon, Moo Kyung (National Institute of Horticultural and Herbal Science, RDA)
Publication Information
Korean Journal of Agricultural Science / v.40, no.4, 2013 , pp. 271-276 More about this Journal
Abstract
This experiment was carried out to determine optimal culture conditions for the production of tubers of Calla (Zantedeschia elliottiana 'Golden Affair' and 'Black Magic') in Korea highland. In vitro produced plantlets and tuberlets of Calla 'Golden Affair' and 'Black Magic' were planted plastic film greenhouse and grown for 100, 120, 140 days, with different night temperature treatments ($0{\sim}10^{\circ}C$ : no heating, 10, $15^{\circ}C$). In both cultivars, tuber size(tuber diameter, tuber height) and tuber weight increased with increasing cultivation period when the night temperature was maintained at $10^{\circ}C$. The largest tuber diameter in vitro produced plantlets was 5.8cm in 'Black Magic' and 3.2cm in 'Golden Affair', and daily tuber growth rate was 1.110g in 'Black Magic' and 0.092g in 'Golden Affair' under the culture conditions. Consequently we think that tuber harvest date was Oct. 30 and night temperature was $10^{\circ}C$ and no heating that was proper method of tuber production. However we had selection of $10^{\circ}C$ treatment for tuber production because it appeared freezing damage occasionally in highland late in October.
Keywords
Zantedeschia; Tuber production; Harvesting time; Night temperature; Highland;
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