Interactive effect of genotype and medium on microtuberization of potatoes (Solanum tuberosum L.) grown in vitro
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Date
2020
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sciendo.com
Abstract
Abstract: This work investigates the interactive effect of six culture media and three photoperiods (darkness,
16h/8h, 8h/16h) on the microtuberization of four potato varieties (Spunta, Désirée, Kondor and Bartina). The
objective is to determine the best tuberization under these growing conditions. The measured parameters
which are related to the suitability of the tuberization characteristics are: the morphological aspects (shape,
position) and the biometric ones (number and diameter of tubers). The obtained results permit to valorize the
meristems that constitute the starting explant, and their good organogenetic skills to provide the first
generation of micropropagation with healthy vitroplants in a sufficient quantity. Thus, the grown vitroplants
on the medium (MS/2+BAP+COU) presented the best values which are related to the percentage of
tuberization, the number of microtubercles / vitroplants and weight of tubers. Moreover, the Bartina genotype
showed a remarkable superiority over its media and under a 16h/8h photoperiod except for the diameter of
the tubers, where this genotype had the best diameter over the medium (MS/2+KIN) under an 8h photoperiod.