Breeding and Characterization of a New Flue-cured Tobacco Variety Zhongchuan208

The new flue-cured tobacco variety Zhongchuan208 (CF228) is a male sterile hybrid bred by crossbreeding with MS-Zhongyan103 as the female parent and T136 as the male parent, aiming at high quality, suitable yield and TMV resistance. In the field, Zhongchuan208 grows neatly and uniformly with strong vigor, with tower shape plant type and oval leaf shape. Comprehensive economic traits are significantly better than K326, slightly better than Yunyan87, and the appearance quality is better than K326, slightly better or equivalent to Yunyan87. The overall coordination of chemical components in flue-cured tobacco leaves is good with slightly higher potassium content. It is characterized by regional style, strong industrial usability, clear fragrance style and outstanding sweet fragrance in southwest tobacco areas. It has immunity to TMV, moderate susceptibility to black shank disease, root knot nematode disease and PVY, and is susceptible to bacterial wilt disease, brown spot disease and CMV. In summary, Zhongchuan208 is a new flue-cured tobacco variety with good quality, economic characters and disease resistance, which has strong adaptability and is suitable for planting in southwest and central China tobacco areas.