Evaluation on Comprehensive Traits of Different Cigar Tobacco Varieties in Zhanjiang, Guangdong

Abstract

【Objective】The study aims to comprehensively evaluate the ecological adaptability of different cigar varieties and screen cigar varieties suitable for planting in Zhanjiang tobacco areas of Guangdong Province.【Method】Field experiments were carried out on 8 newly introduced cigar varieties to analyze and compare their differences in field growth periods, agronomic traits, natural disease rates, conventional chemical components and sensory quality evaluation. Finally, comprehensive index method was used to evaluate their comprehensive traits.【Result】All the eight cigar varieties had a long field growth period, with an average of 141.36 days. The field growth periods of different cigar varieties varied greatly, with a maximum difference of 22 days (133 days for 'Haiyan 108' and 'Haiyan 201', 155 days for 'Yunxue 8'). 'Yunxue 8' and 'Haiyan 200' performed best at agronomic traits, their plant height, maximum leaf width, internodal length and effective leaf number were better than the average of the tested varieties, indicating that these two varieties had strong field growth potential. The incidence of tobacco mosaic virus of 'Haiyan 200', 'Haiyan 101' and 'Yunxue 2' was low, ranging from 5.09% to 6.85%, and no weather fleck occurred, indicating that the disease resistance of the three varieties was strong. 'Haiyan 200' and 'Haiyan 101' had better coordination of conventional chemical components, and their comprehensive scores were higher than the average level, however, the potassium chloride ratio of the two varieties was lower than the suitable range of high-quality tobacco leaves (4-10). In sensory quality evaluation, 'Haiyan 101' scored the highest (46.07), which was characterized by slightly sufficient aroma, clean aftertaste, strong sweetness and good burning ability. The results of comprehensive index calculation showed that the scores of eight cigar varieties ranked as follows: 'Haiyan 200' > 'Haiyan 101' > 'Yunxue 8' > 'Yunxue 2' > 'Haiyan 108' > 'Haiyan 201' > 'Yunxue 3' > 'Havana'.【Conclusion】'Haiyan 200' and 'Haiyan 101' have good comprehensive properties and were suitable for planting in Zhanjiang tobacco areas. It is suggested to further improve the quality of tobacco leaves by optimizing the fertilization scheme as well as drying and fermentation technology.

Keywords

• cigar
• variety screening
• coefficient of variation
• sensory quality
• composite index
• zhanjiang tobacco area