Jasmonate effect on in vitro tuberization of potato (Solanum tuberosum L.) cultivars under light and dark conditions |
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Authors: | K Pruski P Duplessis T Lewis T Astatkie J Nowak P C Struik |
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Institution: | (1) Crop Diversification Centre North, 17507-Fort Road, T5B 4K3 Edmonton, AB, Canada;(2) Department of Plant and Animal Sciences, Nova Scotia Agricultural College (NSAC), P.O. Box 550, B2N 5E3 Truro, NS, Canada;(3) Department of Engineering, NSAC, P.O.Box 550, B2N 5E3 Truro, NS, Canada;(4) Department of Horticulture, Virginia Polytechnic Institute and State University, 24061 Blacksburg, VA, USA;(5) Department of Plant Sciences, Crop and Weed Ecology Group, Wageningen University, P.O. Box 430, 6700 AK Wageningen, The Netherlands |
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Abstract: | Summary Effects of jasmonic acid (JA) on in vitro tuberization of six potato cultivars were examined. Tuberization was carried out
in the dark, or with 8 h photoperiod on MS media with vitamins, 8% sucrose, 0.6% agar and either 2.5 μM JA (JAMed) or no JA
using explants either preconditioned with 2.5 μM JA (JAPret) or not. Cultivars Amisk, Russet Burbank, Sangre and Umatilla
Russet produced the most (1.0–1.7) and the largest microtubers per explant. Tuberization was inconsistent in Shepody and poor
in Atlantic. All cultivars tuberized significantly better in 8 h than in the dark. JA effects were cultivar specific and larger
in the dark than in light. In the dark, Amisk, Atlantic and Umatila Russet tuberized better in JAMed than in JAPret. These
cultivars did not benefit from JA treatments in light. Russet Burbank and Sangre tuberized in the dark better from JAPret
cuttings than on JAMed medium. JA had no effect on tuberization in Shepody. JA double treatment in light vs. control and individual
JA treatments significantly reduced tuberization in Shepody and Russet Burbank. |
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Keywords: | jasmonic acid photoperiod potato microtubers |
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