Identification Bacterial Wilt Resistance of ‘Xiangyan No.7’ Tobacco and Its Quality Analysis
- Received Date: 07/11/2022
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Key words:
- bacterial wilt /
- disease resistance effect /
- variety test /
- quality of tobacco leaves /
- agronomic traits
Abstract: Breeding good disease-resistant varieties is one of the effective methods to control soil-borne tobacco diseases. In this study, two different tobacco varieties, ‘Xiangyan No. 7' and ‘Yunyan 87', were used. The resistance of different tobacco varieties to bacterial wilt disease was identified by indoor and field evaluation of resistance, and the difference of tobacco leaf quality was analyzed by determination of conventional chemical components of tobacco leaves. The results showed that compared with ‘Yunyan 87', ‘Xiangyan 7' had lower morbidity and stronger disease resistance. The leaf area of ‘Xiangyan No.7' was significantly larger than that of ‘Yunyan 87' after 30 days of transplanting, and had no significant difference on other indexes. At 60 days after transplanting, the height of ‘Yunyan 87' was significantly higher than that of ‘Xiangyan No.7', but the other indexes had no significant difference. It was found that ‘Yunyan 87' was better than ‘Xiangyan No.7' in chemical composition and coordination. To sum up, ‘Xiangyan No.7' had stronger resistance to bacterial wilt, while ‘Yunyan 87' had better chemical composition and coordination. This study clarified the different performance of two different tobacco varieties in disease resistance, agronomic traits and tobacco quality, aiming at breeding excellent resistant varieties and improving tobacco yield, and provide theoretical basis for subsequent tobacco plant planting.