What are the methods for growing virus-free seed potatoes?
How do you grow virus-free seed potatoes? Please introduce the basic technique for virus-free seed potatoes: first, sprout the virus-carrying potatoes indoors and disinfect them; then, under sterile conditions on a clean bench, cut the shoot apical meristem and transplant it into a test tube for culture; after about 4 months, the shoot apical meristem grows into a test-tube plantlet; the test...
How do you grow virus-free seed potatoes? Please introduce
The basic technique for virus-free seed potatoes: first, sprout the virus-carrying potatoes indoors and disinfect them; then, under sterile conditions on a clean bench, cut the shoot apical meristem and transplant it into a test tube for culture; after about 4 months, the shoot apical meristem grows into a test-tube plantlet; the test-tube plantlets undergo virus testing, and virus-free plantlets that are truly free of virus are identified from a large number of plants; then, through cutting propagation and multiplication in greenhouses and screen houses, virus-free micro-tubers or pre-basic seed potatoes are obtained; further multiplication yields basic seed potatoes, and the basic seed potatoes are further multiplied into first-generation seed potatoes, second-generation seed potatoes and third-generation seed potatoes, generally collectively called virus-free seed potatoes.
The main potato viruses are removed, the characteristics and traits of the original variety are restored, and the goal of rejuvenation is achieved. Therefore, virus-free potatoes are free of viral, bacterial and fungal diseases for a certain period, their vitality is especially strong, and the yield increase is very significant, generally 30%-70%. As a result, product quality is significantly improved, and the rot, pointed ends, cracking, deformity, scabs and other phenomena easily caused by planting virus-susceptible seed potatoes are greatly avoided. In addition, the transport cost of seed potatoes is significantly reduced. Because a virus-free micro-tuber weighs only 2-5 grams, the seeding rate per mu is only 8-20 kg.
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