Abstract:
In order to screen for Zimbabwe flue-cured tobacco varieties with better properties, providing decision-making services for the promotion of new tobacco varieties, a field contrast experiment was carried out in tobacco planting base of Hongta group for comprehensive evaluations of agronomic characteristics, main chemical components, appearance quality of flue cured tobacco and the smoking quality of six Zimbabwe flue-cured tobacco varieties and one control variety Yunyan 87, using the method of gray relational grade analysis. The analysis results showed that, all tested flue-cured tobacco varieties were ranked according to equal-weighted correlation degree between comprehensive characters, as follows:KRK26 > Yunyan87 > T62 > T64 > T63 > T16 > T20, All tested flue-cured tobacco varieties were ranked according to weighted correlation degree between comprehensive characters, as follows:KRK26 > Yunyan87 > T62 > T63 > T16 > T64 > T20. The weighted correlation coefficient and weighted correlation coefficient of KRK26 were both ranked first, being 11.2624 and 0.9067 respectively. The comprehensive characters of KRK26 variety were better than yunyan87 and other flue-cured tobacco varieties from Zimbabwe. This result is consistent with field performance of the varieties. In conclusion, these tobacco varieties from Zimbabwe have a good potential for promotion, and should be further popularized.