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. 2025 Sep 19;16:1672845. doi: 10.3389/fpls.2025.1672845

Table 4.

The quality indices of flue-cured tobacco leaves.

Parts of tobacco leaf Treatment Total sugar content (%) Reducing sugar content (%) Nicotine content (%) Total sugar/nicotine
Upper leaf NK 24.42b 23.51a 2.23b 19.93a
RK 23.29c 24.16a 2.26b 10.33b
NKP 27.81a 21.60b 2.76a 9.85c
RKP 26.14b 22.24b 2.68a 9.73c
Middle leaf NK 23.12b 21.35b 2.15b 10.73a
RK 22.02c 21.40b 2.27c 10.70a
NKP 25.75a 22.95a 2.59a 9.91b
RKP 24.77ab 21.74b 2.49a 9.96b