Ecological adaptability and comprehensive trait evaluation of a new flue-cured tobacco line LY100

doi:10.14088/j.cnki.issn0439-8114.2026.08.019

Abstract

Abstract: To clarify the botanical characteristics, agronomic traits and ecological adaptability of LY100, a new local characteristic flue-cured tobacco strain, field trials were conducted at five experimental sites covering four provinces, namely Jimo and Zhucheng of Shandong, Luoyang of Henan, Xichang of Sichuan and Longshan of Hunan. Investigations on botanical and agronomic traits of LY100 were carried out, and industrial evaluation of cured tobacco leaf samples was implemented. Systematic identification was also performed on its disease resistance, cold tolerance and genetic relationship. The results showed that LY100 exhibited consistent botanical traits across all five test sites. In terms of agronomic performance, LY100 possessed taller plants and more leaves in Shandong; shorter internodes along with longer and wider leaves in Luoyang; and the shortest plant height, the least leaf number yet relatively large leaf length and width in Longshan. Comprehensive analysis indicated that LY100 was more suitable for cultivation in the Huanghuai tobacco-growing region, with the best overall performance recorded in the Luoyang producing area. Further industrial evaluation on cured tobacco leaves from Luoyang demonstrated that LY100 grown in Shangguan of Yiyang stood out in appearance quality, sensory quality and comprehensive industrial assessment. In addition, LY100 showed superior low-temperature tolerance compared with control varieties H382 and K326, yet its overall disease resistance was unsatisfactory. Genetic relationship analysis revealed a distinct genetic background between LY100 and mainstream cultivated varieties. In conclusion, LY100 delivers favorable comprehensive leaf quality, while its disease resistance needed substantial improvement. Given its distant genetic relationship with other dominant cultivars, LY100 can be further developed and researched as a characteristic reserve variety for the Huanghuai tobacco-growing region.

Key words: flue-cured tobacco, new line, ecological adaptability, comprehensive evaluation

CLC Number:

S572

LI Yuan, WANG Hui, YANG Xiang-le, YUE Xiu-qiang, REN Min, LIU Dan, LIU Guo-xiang, YANG Ai-guo, LI Li-hua. Ecological adaptability and comprehensive trait evaluation of a new flue-cured tobacco line LY100[J]. HUBEI AGRICULTURAL SCIENCES, 2026, 65(8): 124-132.

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