Abstract:

In response to the issues of low tobacco yield and poor quality in the Luohe tobacco-growing area, field experiments were conducted to screen new tobacco varieties that are high quality, high yield, and strong disease resistance, providing a reference for enriching the tobacco variety system in Luohe. This paper used the main variety Zhongyan 100 as a control and compared various aspects such as botanical traits, agronomic traits, conventional chemical components, post-roasting tobacco appearance quality, sensory analysis, economic traits, and incidence rate of diseases among different varieties to select the best one. Variety Y20116-91 stood out for its plant height, reaching 191.0 cm, and Y20112-7 had the largest middle leaves area, showing good performance in various indicators. In terms of agronomic traits, varieties Y214044, Y214048, and Y20112-7 had moderate plant height, stem girth, and node spacing, were resistant to lodging, had well-developed root systems, moderately sized leaves, and sufficient space between plant rows, ensuring good ventilation. Varieties Y214022, Y20117-45, and Y20116-91 exhibited good appearance quality and high average price, meeting the production needs of tobacco farmers. From the sensory evaluation data of the middle leaves post-roasting, varieties Y214048, Y20112-7, and Y20112-2 were prone to extinguishing but had a good aroma quality. Comprehensively, varieties Y214044, Y214048, Y214022, Y20112-7, and Y20117-45 showed good performance in appearance quality, chemical components, and field botanical traits and can be further selected.

Key words: flue-cured tobacco, new varieties, adaptability, screening