Breeding and selecting of flue- cured tobacco variety Yunyan202 and its characteristics

Yunyan202, a new flue- cured tobacco variety of male sterile hybrid is developed by crossing MS KX13( female parent) and KX14( male parent) . With stable agronomic characteristics, Yunyan 202 grows rather uniformly in field. It has a tower- shaped plant and oblong lamina. It has a growing period of 110- 115 days in the field. The tests of many years and in many places showed that Yunyan 202 is superior or similar in terms of economic returns compared with the control variety K326. Its leaves mature well layer by layer and are easy to cure.The cured leaves are in orange color, loosely structured, oily and with strong chroma. The content and ratio of the major chemical components were suitable. It is resistant to TMV and black shank, moderately to resistant to Granuville wilt and CMV, low resistant to brown spot. Yunyan 202, an excellent flue- cured tobacco variety with fine leaf quality, high yield and good adaptability, can be grown in areas with high incidence of TMV, brown spot and black shank.