Table 5.

Number of aphids (Mean ± SE, n=16) on a mutant and a control plant grown in the same pot.

No. of aphids	Double mutantb	Paired t-test
Controlab		t-value p-value
1-37-7-1	1-37-8-2
2.1 ± 0.4 3.4 ± 0.4	4.0 ± 0.4 3.6 ± 0.4	3.00 0.01 0.20 0.84
1-37-7-1	1-37-24-1
2.8 ± 0.4	3.4 ± 0.5	0.84 0.41
1-37-7-1	1-16-1-1-1
2.8 ± 0.3	2.2 ± 0.3	1.25 0.23
2-29-4-2-1	2-29-4-3-5
2.8 ± 0.4	2.5 ± 0.4	0.39 0.71

Counts were made 24 h after release of 10 apterous adults, or nymphs close to adulthood.

^aControl lines originated from the same T₀ plant from which mutations were segregated, except for test of mutant line 1-16-1-1-1.

^bLines were tested in generations S₃ or S₄.