Breeding and characteristics of a new flue-cured tobacco variety Yunyan303

doi:10.14088/j.cnki.issn0439-8114.2026.03.019

Abstract

Abstract: Yunyan303 was a new flue-cured tobacco variety bred by using MSK326 as the female parent and rY3 as the male parent. The plants were tower-shaped with long elliptical leaves, had an average topped plant height of 153.0 cm, produced 23-24 harvestable leaves, and required a field growth period of 135 days. This variety showed resistance to black shank (race 0) and moderate resistance to brown spot. Compared with the control variety KRK26, Yunyan303 demonstrated stronger plant vigor and significantly higher resistance to black shank, while its main agronomic and economic traits were generally comparable to those of the control. In terms of cured leaf quality, the sensory quality of Yunyan303 was comparable to that of KRK26, its appearance quality score was higher than that of the control, its chemical composition score was similar, and its physical property score was lower than that of the control. Overall, while maintaining the other traits of KRK26, Yunyan303 had significantly improved resistance to black shank (race 0). This variety was suitable for planting in regions with favorable light and heat conditions.

Key words: new flue-cured tobacco variety, Yunyan303, breeding, characteristics

CLC Number:

S572.03

JIAO Fang-chan, WU Xing-fu, FENG Zhi-yu, CHEN Xue-jun, TONG Zhi-jun, ZHANG Yi-han, LI Yong-ping. Breeding and characteristics of a new flue-cured tobacco variety Yunyan303[J]. HUBEI AGRICULTURAL SCIENCES, 2026, 65(3): 122-126.

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