The yacon is mainly vegetatively propagated by bulbs. The storage of bulbs increases the planting cost, and the germination is slow. The self-cultivation is too long to carry virus, which seriously affects the development of the yacon industry.
Organize rapid propagation technology. In other words, the yacon regenerated plants obtained from the high-quality parent plants of yacon or the axillary buds of yacon seed, treated by a detoxification technique, and cultured on an appropriate medium, greatly increase the rapid propagation of the seedlings and shorten the cultivation time. And seedlings should not be mutated.
Cutting propagation technology. The tubers were cut longitudinally into 2-4 pieces so that each piece had several buds. The wounds were treated and discharged into a fine earth seed bed of 2020 cm, watered and covered with plastic film. Shoots begin to sprout 10-20 days. When the shoot height is 10-15cm, seedling cuttings can be picked. Through a period of cultivation, the seedling height is about 20cm, and 1-2 knots at the base can be cut and then the upper part is cut and propagated. This cutting propagation process can be repeated, which not only increases the rapid propagation of seedlings but also reduces the cost.
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