Effects of mti-2 Transgenic Potato Plants on the Aphid Myzus persicae (Sternorrhyncha: Aphididae)

Table 2

Average (± s.d.) demographic parameters of Myzus persicae reared on nontransformed (NT) or selected DM lines.

Demographic parameters	Nontransformed	mti-2-expressing potato lines
	Line NT	DM6	DM7	DM11	DM19	𝐹^∗∗	𝑃^∗∗∗
	𝑛^∗=24	𝑛=31	𝑛=33	𝑛=34	𝑛=16
Prereproductive period (days)	10.3±1.8^a∗∗∗∗	9.7±1.8^a	10.0±1.5^a	9.9±1.7^a	10.8±2.3^a	1.19	<.31
Daily fecundity (nymphs/female/day)	1.2±0.3^a	1.4±0.4^b	1.2±0.3^a	1.4±0.5^b	1.1±0.2^a	3.49	<.01
𝑟𝑚 (females/female/day)	0.14±0.05^a	0.17±0.03^b	0.15±0.04^a	0.17±0.04^b	0.15±0.03^a	2.91	<.02
Doubling time (days)	5.2±1.4^a	4.1±0.9^b	4.7±1.1^a	4.4±1.2^b	5.0±1.5^a	3.41	<.01

^∗𝑛: number of aphids tested. ^∗∗𝐹: Fisher’s test value of one-way ANOVA analysis. ^∗∗∗𝑃: 𝑃 value of the Fisher’s test. ∗∗∗∗Values in the same row followed by the same letter indicate no significant difference according to the PLSD test of Fisher (𝑃=.05).