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Fig. 3 | BMC Microbiology

Fig. 3

From: Influence of microbiota and metabolites on the quality of tobacco during fermentation

Fig. 3

Alpha diversity comparison among four groups. a: Ace index; b: Chao index; c: Shannon index; d: Simpson index. p-value < 0.01 is marked as **, and p-value < 0.05 is marked as *. Group 1 represents the sun-dried unfermented tobacco leaves; group 2 represents leaves fermented at 45 °C for 2 weeks; group 3 represents leaves fermented at 45 °C for 4 weeks; and group 4 represents leaves fermented at 45 °C for 6 weeks

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