Efficacy of indigenous isolates of Beauveria bassiana (Balsamo) Vuillemin (Deuteromycota: Hyphomycetes) against the Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae)

Egyptian Journal of Biological Pest Control

Table 3 Percentage mortalities of young larvae (1st and 2nd instars) of Leptinotarsa decemlineata in response to the tested Beauveria bassiana isolates at 3, 5, 7, and 9 days after treatment under laboratory conditions

Isolate name	Percent mortality (±SE) from a single-dose trial^*				df	F	P
Isolate name	3 days	5 days	7 days	9 days	df	F	P
BbKm-1	8.3±1.7^cdC**	30.0±5.7^efB	41.7±1.7^deAB	56.7±6.7^cA	11	20.0	0.000
BbKm-2	0.0±0.0^dC	15.0±5.0^fBC	26.7±6.7^eB	53.3±3.3^cA	11	25.2	0.000
BbDm-1	46.7±4.4^abC	78.3±4.4^abcB	95.0±5.0^aAB	98.3±1.7^aA	11	33.4	0.000
BbFn-3	6.7±4.4^dB	25.0±8.7^fB	61.7±6.0^cdA	70.0±5.0^bcA	11	23.2	0.000
BbKp-1	3.3±3.3^dC	53.3±3.3^deB	88.3±6.0^abA	91.7±8.9^abA	11	52.8	0.000
BbAk-1	0.0±0.0^dC	13.3±3.3^fBC	30.0±5.0^eAB	46.7±6.0^cA	11	22.7	0.000
BbSr-1	30.0±2.9^bcB	81.7±1.7^abA	85.0±2.9^abA	86.7±3.3^abA	11	97.6	0.000
BbKr-1	48.3±1.7^abB	58.3±4.4^bcdAB	80.0±7.6^abcA	85.0±7.6^abA	11	13.7	0.002
BbDs-2	50.0±5.0^abC	78.3±1.7^abcB	83.3±3.3^abcAB	96.7±1.7^aA	11	37.0	0.000
BbMg-1	36.7±10.1^abB	58.3±4.4^bcdAB	71.7±6.0^bcA	86.7±3.3^abA	11	10.7	0.004
BbMg-2	46.7±3.3^abC	56.7±1.7^cdC	75.0±2.9^abcB	100.0±00^aA	11	98.8	0.000
BbMp-1	38.3±1.7^abD	78.3±1.7^abcC	91.7±1.7^abB	100.0±00^aA	11	358.6	0.000
BbGp-1	5.0±2.9^dC	50.0±7.6^deB	71.7±1.7^bcA	86.7±4.4^abA	11	57.0	0.000
BbKl-1	53.3±6.7^aB	85.0±2.9^aA	88.3±6.0^abA	88.3±6.0^abA	11	9.3	0.006
df	41	41	41	41
F	23.0	30.5	25.4	15.3
P	0.000	0.000	0.000	0.000

*In a single-dose trial, all the isolates were tested at a concentration of 1 × 10⁷ conidia/ml
**Means in a column followed by the same lower-case letter are not significantly different, and means in a row followed by the same upper-case letter are not significantly different (Tukey’s HSD test; P < 0.05)