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Keywords
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Biomass allocation,
Explant growth,
In vitro tuberization,
Microtuber yield,
Shoot growth
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Abstract
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Sucrose has a significant role in promoting microtuberization in potato.
It acts as a crucial modifier, influencing the growth and development of
microtuber in potato. Understanding the role of sucrose in
microtuberization is vital for improving potato cultivation practices and
enhancing crop productivity. In this experiment, different
concentrations of sucrose (3, 6, 9, 12, and 15%) were investigated to
determine their effects on the microtuberization of a potato cultivar
‘Sante’. The findings revealed that high concentrations of sucrose (12
and 15%) inhibited microtuberization percentage, microtuber count,
and shoot growth. Tuberization percentage reached its maximum value
(100%) when exposed to a sucrose concentration of 9%. The
microtuber count was 2 per explant and 4.6 per vessel. However, using
a 12% sucrose concentration resulted in the highest microtuber
diameter (5 mm), microtuber fresh weight (120 mg) and dry weight (26
mg), and microtuber yield (FW: 752 mg; DW: 170 mg). The highest
explant fresh weight (44 mg) and dry weight (9.5 mg) occurred in
response to 15% sucrose concentration. Biomass allocation was
influenced by sucrose concentration, with higher concentrations leading
to a greater biomass allocation to the microtuber and explant, rather
than the shoot. Accordingly, it can be concluded that a sucrose
concentration of 12% was an optimal treatment for ‘Sante’ potato
microtuber production
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