The antioxidative defense system is involved in the premature senescence in transgenic tobacco (Nicotiana tabacum NC89)

Table 3 Leaf area of WT and transgenic (T) plants

Lines	1 (cm²)	2 (cm²)	3 (cm²)	4 (cm²)	5 (cm²)	6 (cm²)	7 (cm²)	8 (cm²)	9 (cm²)
WT	28.8 ± 5.0a	62.8 ± 13.3a	82.9 ± 14.7a	158.5 ± 14.6a	154.8 ± 12.4a	112.8 ± 5.4a	77.9 ± 8.9a	25.3 ± 7.6b
T3-1	26 ± 8.4a	59.2 ± 21.0a	97.3 ± 4.8a	96.8 ± 1.1b	132.9 ± 2.6b	103.0 ± 6.5a	89.5 ± 7.0a	56.4 ± 14.2a	18.7 ± 6.5
T3-2	30.2 ± 1.0a	67.5 ± 2.7a	89.9 ± 10.2a	124.6 ± 5.6b	133.5 ± 2.7b	111.4 ± 12.0a	86.1 ± 11.6a	53.2 ± 0.3ab	23.2 ± 2.9
T3-3	24.8 ± 3.2a	58.0 ± 8.4a	81.4 ± 1.9a	116.7 ± 11.9b	128.9 ± 6.7b	116.1 ± 1.5a	88.8 ± 6.2a	53.5 ± 10.5ab	31.1 ± 16.3

Each line represents a mean of five replicates. Different letters indicate statistically significant differences at P ≤ 0.05 in same leaf position of wild-type (WT) and transgenic (T) plants

ISSN: 0717-6287