TIERED METHOD OF ACCELERATED REPRODUCTION OF POTATO TUBERS Russian patent published in 2014 - IPC A01G1/00 A01G7/00 

FIELD: agriculture.

SUBSTANCE: invention relates to the field of selection and primary seed breeding, in particular, to methods of reproduction of planting material. The method comprises the stimulation of growth of etiolated sprouts through cuts in the apical part and processing with the solution of thiourea. The tubers are germinated in dark at a temperature of 14-16°C and a relative air humidity of 90-95%. Detachment of apexes from basic etiolated sprouts of first order is carried out at the time of formation on the basic etiolated sprouts of the first order of 3-4 knots. During formation on the basic etiolated sprouts of the first order of 3-5 lateral etiolated sprouts of the second order and shoots of callus origin, tubers are planted in the soil. At that after planting the tubers are sprinkled with humus soil with the layer of 10 cm, and upon reaching the height of sprouts of 21-25 cm above the level of humus soil the sprouts are sprinkled with nutrient substrate of different density. The sprinkling is repeated several times upon reaching the height of sprouts of 21-25 cm above the substrate level. During sprinkling the tops of sprouts with length of 1-5 cm are left free over the substrate surface, and the substrate density is reduced with each sprinkling.

EFFECT: method enables to increase the reproduction factor of the initial material during growing the most valuable varieties as well as breeding lines.

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