. 2011 May 24;4(5):672–684. doi: 10.1111/j.1752-4571.2011.00190.x

Table 2.

Effects of the two transgenic events (cowpea trypsin inhibitor (CpTI) and Bt/CpTI) on fitness-related traits in F₂ progeny of crop–weed hybridization under low versus natural insect pressure and pure versus mixed cultivation

	Pure cultivation				Mixed cultivation

Characteristics	CpTI (+)	CpTI (−)	Bt/CpTI (+)	Bt/CpTI (−)	CpTI (+)	CpTI (−)	Bt/CpTI (+)	Bt/CpTI (−)
Low insect
Plant height (cm)	105.9 ± 2.3^a	104.8 ± 2.7^a	109.2 ± 0.2^a	109.1 ± 3.5^a	104.0 ± 2.5^a	105.4 ± 2.3^a	106.5 ± 2.5^a	105.6 ± 1.4^a
No. of tillers	22.0 ± 1.2^a	21.6 ± 1.3^a	24.0 ± 2.4^a	23.6 ± 2.1^a	16.1 ± 1.2^a	17.3 ± 1.2^a	17.2 ± 1.5^a	16.2 ± 1.2^a
No. of panicles	18.5 ± 0.8^a	18.4 ± 1.0^a	18.7 ± 0.8^a	18.8 ± 0.9^a	11.9 ± 0.5^a	12.4 ± 0.7^a	13.6 ± 1.2^a	12.2 ± 1.0^a
No. of seeds	632.1 ± 12.1^a	643.1 ± 23.1^a	684.9 ± 24.8^ab	731.3 ± 29.5^b	430.0 ± 26.3^a	440.1 ± 23.8^a	554.7 ± 45.5^b	499.6 ± 33.5^ab
Seed set	46.2 ± 1.3^a	48.4 ± 1.3^ab	47.2 ± 1.5^ab	50.6 ± 1.4^b	44.5 ± 2.7^a	44.4 ± 2.1^a	50.6 ± 1.5^a	48.6 ± 2.2^a
1000-seed weight (g)	23.3 ± 0.4^a	22.6 ± 0.2^ab	22.3 ± 0.3^b	22.8 ± 0.3^ab	22.7 ± 0.6^a	22.5 ± 0.5^a	22.5 ± 0.4^a	22.6 ± 0.2^a
Natural insect
Plant height (cm)	98.9 ± 2.0^a	96.1 ± 3.0^a	112.2 ± 2.3^b	107.7 ± 1.3^b	100.2 ± 1.1^a	102.1 ± 3.3^a	107.1 ± 2.8^a	102.0 ± 1.9^a
No. of tillers	19.9 ± 1.3^a	19.3 ± 1.4^a	22.8 ± 2.2^a	20.2 ± 1.8^a	15.6 ± 1.0^a	15.6 ± 0.8^a	16.5 ± 1.3^a	15.4 ± 1.2^a
No. of panicles	15.1 ± 0.4^a	15.4 ± 0.3^a	19.5 ± 0.7^b	16.2 ± 0.3^a	10.9 ± 0.8^a	11.3 ± 1.2^a	14.3 ± 0.7^b	12.6 ± 1.1^ab
No. of seeds	509.2 ± 41.4^a	482.5 ± 19.7^a	678.5 ± 34.5^b	542.6 ± 25.3^a	336.5 ± 23.4^a	350.5 ± 32.8^a	473.8 ± 32.7^b	352.9 ± 20.1^a
Seed set	41.4 ± 2.6^a	39.9 ± 2.5^a	48.6 ± 1.7^b	39.9 ± 2.0^a	42.2 ± 1.1^ab	44.3 ± 2.2^a	45.4 ± 1.7^a	37.6 ± 1.3^b
1000-seed weight (g)	21.8 ± 0.3^ab	20.9 ± 0.3^a	22.2 ± 0.3^b	21.4 ± 0.5^ab	22.4 ± 0.5^a	22.1 ± 0.5^a	22.4 ± 0.3^a	21.3 ± 0.4^a

Different letters after the means and standard error (±) in the same row indicate significant differences according to Duncan's multiple range tests followed by Bonferroni correction in the same treatment. Data from the two weedy strains were combined (see text). N = 8 plots.