Patent ID: 7901938
Filing Date: 2011-03-08
Classification: A01H

Abstract:
1. A method of mass producing potato seedlings, comprising: collecting growing points of seed potatoes and culturing the growing points in a liquid or solid medium; introducing in vitro plantlets obtained from the culture of the growing points to a solid culture, wherein the solid culture is comprised of two-steps: primary shoot subculture and secondary propagation subculture; and removing the in vitro plantlets from the solid culture and planting a stem cutting of the in vitro plantlets and acclimatizing the planted stem cutting of the in vitro plantlets in deep flow culture, in which a nutrient solution is circulating, wherein in the acclimatizing, light intensity is gradually increased according to growth phases to gradually harden the planted stem cutting of the in vitro plantlets, wherein the light intensity is gradually increased from: a) 0 Lux for 55-65 hours, followed by b) 2,100 Lux for 45-55 hours, followed by 0 Lux for 4-8 hours, followed by c) 3,600 Lux for 35-45 hours, followed by 0 Lux for 4-8 hours, followed by d) 5,500 Lux for 25-35 hours, followed by 0 Lux for 4-8 hours, followed by e) 7,000 Lux for 535-545 hours, followed by 0 Lux for 120-180 hours.