Objective The study was carried out to screen new varieties (lines) of flue-cured tobacco with high quality adapted to ecological conditions in Ji'an tobacco production area.

Method Five flue-cured tobacco varieties (lines) including CC400, PVH2233, PVH2343, 1604 and Xiangyan 7 were introduced from the imported varieties and domestic self-bred varieties, and the main conventional varieties Yunyan 87 and K326 were used as control varieties. A community comparative trial was conducted for two consecutive years from 2019 to 2020. The growth period, agronomic traits, disease resistance, economic characters, appearance quality, chemical composition and sensory quality of each variety (line) were analyzed.

Result The Xiangyan 7, which showed a good balance between quality and benefit, had better color and oil content. The output and yield of Xiangyan 7 were higher than those of Yunyan 87 by 305.85 kg/hm² and 4 837.95 Yuan/hm² respectively. The sensory quality was obviously better than the main variety Yunyan 87. However, attention should be paid to the prevention and control of common mosaic disease in field at early stage. The PVH2233 with good interannual stability and medium sensory quality had 3-4 pieces of leaves more than the control, and the vigorous growing period was 5-7 days longer than that of the control. It was necessary to strengthen the researches on supporting cultivation techniques. The 1604 had the advantages of early growth and rapid development, largest pitch and lumbar leaf area, better appearance quality and economic character, and better sensory quality than Yunyan 87. The CC400 was similar to K326 in field growth and had better leaf opening, but the occurrence of bacterial wilt was relatively severe and the economic character was not prominent. The PVH2343 had thicker leaves, but the incidence of climatic spot disease was more severe, and the sensory quality was slightly poor.

Conclusion The comprehensive performance of Xiangyan 7, PVH2233 and 1604 was better, which could be further verified by expanding the planting area.