Objective The study was conducted to screen out excellent flue-cured tobacco varieties with strong adaptability and provide variety resources for tobacco production in Jiangxi.

Method A comparative experiment of seven new introduced flue-cured tobacco varieties (lines)including NC102, F31-2, NX0914 and etc., was conducted in southern Jiangxi tobacco-growing area. The photosynthetic characteristics, disease resistance, economic traits and internal quality of different flue-cured tobacco varieties under local ecological conditions were comprehensively analyzed.

Result Under the ecological conditions of southern Jiangxi, the resettling period of F31-2, NX0914, and 20810 was about 39 days, showing early and rapid growth, low natural incidence of climatic spot disease, TMV and bacterial wilt disease, good economic benefits. The output of these varieties was 16.2%-41.9% higher than that of the control K326. The chemical composition indicators such as total nitrogen (1.57%-1.72%), nitrogen-nicotine ratio (0.77-0.90) and difference of total sugar and reducing sugar (1.52-2.23) were more suitable. The flue-cured tobacco style was moderate(+)-strong or strong flauor type. And the sensory quality was comparable with K326, with good industrial availability and comprehensive performance. The comprehensive performances of NC102 and Yunyan 201 were general, and those of Zhongyan 100 and 13-4 were moderate, with general adaptability to the local ecological conditions.

Conclusion F31-2, NX0914 and 20810 were worthy of further demonstration and extension.