Effect of jasmonic acid on in vitro explant growth and microtuberization in potato |
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| Authors: | Z J Zhang W J Zhou H Z Li G Q Zhang K Subrahmaniyan J Q Yu |
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| Institution: | (1) Department of Environment and Safety Engineering, North University of China, Taiyuan, 030051, P.R. China;(2) College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310029, P.R. China |
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| Abstract: | The shoot fresh mass, root length and root numbers of two potato (Solanum tuberosum L.) cultivars Favorita and Helanwuhua were increased significantly by the application of 0.2 – 2 mg dm−3 jasmonic acid (JA) in the Murashige and Skoog medium. However, the growth of potato explants was inhibited by JA at high
concentrations (20 – 50 mg dm−3). Chlorophyll content in explant leaves decreased with an increase in the concentration of JA. In leaves treated with 0.2
mg dm−3 JA acid peroxidase activity increased, while in the leaves treated with more than 2 mg dm−3 JA peroxidase activity decreased. Under the dark, the microtuber numbers, fresh mass and percentage of big microtubers of
two potato cultivars were not promoted by the application of 0.2 – 50 mg dm−3 JA. |
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| Keywords: | chlorophyll content fresh mass peroxidase activity plantlet root development Solanum tuberosum |
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