Effect of jasmonic acid on in vitro explant growth and microtuberization in potato

Author： Zhang Z.   Zhou W.   Li H.   Zhang G.   Subrahmaniyan K.   Yu J.  

Publisher： Springer Publishing Company

ISSN： 0006-3134

Source： Biologia Plantarum, Vol.50, Iss.3, 2006-09, pp. : 453-456

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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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