The research conducted at NIRDPSB Brașov aimed to evaluate the influence of variety, density of vitroplants and sucrose concentration in the nutrient medium on the potato micro tuberization process, analyzing two elements: the number of micro tubers/plantlet and weight of micro tubers/plantlet. The experiment included four varieties (Azaria, Brașovia, Cosiana and Cezarina – control), two densities of vitroplants (15, as control and 10 plantlets/container,) and two concentrations of sucrose (80, as control and 90 g/l). The analysis of variance revealed that variety had a very statistically significant influence on both number of micro tubers/plantlet and the weight of micro tubers/plantlet. The sucrose concentration significantly influenced the weight of micro tubers, but did not cause significant changes for micro tubers number. The density of the vitroplants did not have a statistically significant influence on the analyzed parameters, although a tendency for micro tubers weight to increase was observed at lower densities. The best results regarding micro tuberization capacity were obtained for Brașovia variety, which recorded the highest number of micro tubers/plantlet and the highest values of micro tubers weight/plantlet were observed for Brașovia and Cosiana varieties, especially at the concentration of 90 g/l sucrose. The results highlight the importance of the genetic factor in the micro tuberization process, as well as the role of sucrose concentration in increasing micro tubers weight.
Tican et al. (Sun,) studied this question.
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