Table 2.

Mortality of third-instar larvae of B. dorsalis from different geographic populations under stress treatment at 5°C × 6 h

Populations	Mortality (%) a
Guangzhou (23.1° N)	34.4 ± 5.1 a
Xiamen (24.3° N)	26.7 ± 3.3 a
Wuxi (31.6° N)	14.4 ± 1.9 b
F, P values	22.439, 0.0016

^a Mean ± SD ( n  = 3) values follows different letter are significantly different (Holm–Bonferroni correction, P  < 0.05/3).