Table 3.

Carbohydrates contents in flue-cured tobacco leaves.

Sample	Starch(mg/g FW)	Glucose*	Fructose*	Sucrose*	Maltose*
CK	212.34 ± 15.79 a	7.41E+06 ± 8.86E+05 b	9.54E+06 ± 1.48E+06 b	3.12E+07 ± 9.29E+06 b	2.90E+06 ± 7.92E+05 a
Stem(+)	112.58 ± 5.21 c	1.86E+07 ± 1.52E+06 a	2.20E+07 ± 4.95E+06 a	5.66E+07 ± 5.12E+06 a	4.66E+06 ± 1.26E+06 a
Stem(-)	158.24 ± 11.81 b	2.08E+07 ± 1.34E+06 a	2.19E+07 ± 6.67E+06 a	7.26E+07 ± 2.14E+07 a	6.58E+06 ± 2.20E+06 a

FW, fried weight. *, The relative quantity of a metabolite was represented by the area of its corresponding mass spectrum peak.