The effect of size and quality of potato microtubers on quality of seed potatoes in the cultivar 'Superior'
2009
Park, Se Won | Jeon, Jae Heung | Kim, Hyun Soon | Hong, Se Jin | Aśvatth, Si | Joung, Hyouk
Potato microtubers produced in vitro of the cultivar 'Superior' were assessed to decide up to what size it can be used for the seed potato with respect to storability, dormancy period, and sprouting vigor. The larger microtubers lost moisture content more slowly and retained firmness longer when stored at 4°C. In the sprouting test, the larger ones had less period of dormancy and showed more vigorous sprouting ability. The starch increased with increasing size of the microtuber and showed the distribution of about 70-80% of dry matter content. The amounts of sugars were positively co-related with the size of the potato. The internal factors such as dry matter and carbohydrate content reveal that potato microtuber follows the field-grown potatoes in all aspects. The results suggest that the size of microtubers can be used as an index for grading their quality as seed potatoes, and the size of the microtuber should be at least 0.5g to be used as seed potato.
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