Influence of Transplanting Time of Potatoes Virus-free Seedlings on the Disease Epidemic and Yield

Purposes The objective of this study was to explore the economic and efficiently breeding time of potato breeder seed and to provide a guidance for potato breeder seed production in Kunming area.Methods Potato ‘C88’was used as the test material and 14 transplanting time was set up. The effects of different transplanting time on disease epidemic and yield of virus-free potato plantlets under greenhouse conditions were studied which provided guidance for potato breeder seed production in Kunming area.Results In the greenhouse,there was a significant difference (PPPConclusion The best transplanting time to virus-free potatoes plantlet is a week before or after T1(April 4th)of first-half year, T10(August 17th) and T12(September 16th) of the second-half year.