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In vitro production of microtubers for conservation of potato germplasm: Effect of genotype, abscisic acid, and sucrose

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Summary

With the objective of using microtubers for conservation of potato germplasm, the main effects of genotype, abscisic acid (ABA), and sucrose level, and of their interactions on biomass production, microtuberization, microtuber dormancy, and dry matter content, were studied. ABA decreased both microtuber production and microtuber dormancy, whereas higher concentrations (60–80 gl−1) of sucrose promoted biomass production, microtuber production as well as microtuber dry matter content. Microtubers stored under diffused light had longer dormancy than those kept continuously in the dark. Interactions among various factors conditioned the main effects for some characters. In vitro performance of the genotypes studied was related to their known performance under in vivo conditions for most of the characters. Microtubers produced on media devoid of ABA and containing high sucrose concentrations and N6-benzyladenine (44.38 μM) could be stored for 12 mo. under diffused light at 6±1°C.

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Authors and Affiliations

  1. Division of Crop Improvement, Central Potato Research Institute, Shimla-171 001, Himachal Pradesh, India

    J. Gopal, Anjali Chamail & Debabrata Sarkar

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  1. J. Gopal
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  2. Anjali Chamail
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  3. Debabrata Sarkar
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Correspondence to J. Gopal.

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Gopal, J., Chamail, A. & Sarkar, D. In vitro production of microtubers for conservation of potato germplasm: Effect of genotype, abscisic acid, and sucrose. In Vitro Cell.Dev.Biol.-Plant 40, 485–490 (2004). https://doi.org/10.1079/IVP2004540

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  • DOI: https://doi.org/10.1079/IVP2004540

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