Study on the adaptability of different flue-cured tobacco varieties in the Liangshan tobacco region of Sichuan Province

doi:10.14088/j.cnki.issn0439-8114.2024.11.018

Abstract

Abstract: Aiming to screen out new varieties of flue-cured tobacco suitable for planting in Liangshan tobacco area of Sichuan Province, taking Yunyan 87 as the control, the ecological adaptability of Yunyan 121, Yunyan 116, Yunyan 119 and Yunyan 301 was studied by means of agronomic characters, quality and economic characters of fresh tobacco leaves. Meanwhile, the cell structure and metabolism of different varieties at maturity were studied by means of transmission electron microscopy and metabolomics. The results showed that, the agronomic traits of Yunyan 87 and Yunyan 116 in the five varieties in the field. There was no significant difference in the appearance quality of the middle leaves of the five cultivars, but Yunyan 87 and Yunyan 121 had slightly more oil, and Yunyan 121 had obvious advantages in thickness, stem content and tension resistance, and was more harmonious in the chemical composition, and the sensory quality score was high. The number of chloroplast scleric granna in Yunyan 87 and Yunyan 121 cells was higher, the degree of thylakoid stacking was higher, and the number of osmiophilic granules was higher. Compared with Yunyan 87, the contents of nicotine and thiamine in Yunyan 121 cultivar decreased, and the contents of melibiose, D-galactose, jasmonic acid, perilla alcohol, tyrosine and tocopherol increased to promote root growth, improve stress resistance, and better adapt to the local growth environment, and were conducive to reducing nicotine in flue-cured tobacco, increasing sugar content, and improving the aroma and smoking taste of tobacco leaves. It was concluded that, Yunyan 121 and Yunyan 87 had the best comprehensive traits, followed by Yunyan 116, especially Yunyan 121 had strong disease resistance and stress resistance, adapted to the local growth environment, and had high promotion value in Liangshan tobacco region of Sichuan Province.

Key words: flue-cured tobacco varieties, ultrastructure, non-targeted metabolomics, flue-cured tobacco quality, Liangshan of Sichuan Province

CLC Number:

S572

ZHAO Yuan, LI Qiu-jian, ZHANG Li, WANG Wei-min, GUO Jin, LU Wei-long, XU Jia-yang, JIA Wei, HAN Dan, SHI Jiu-chang, XU Zi-cheng. Study on the adaptability of different flue-cured tobacco varieties in the Liangshan tobacco region of Sichuan Province[J]. HUBEI AGRICULTURAL SCIENCES, 2024, 63(11): 100-107.

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