Genetic improvement of some microorganisms to increase the effect of bio-control on the potato tuber moth, Phthorimaea operculella (Zeller) (Lepidoptera: Gelechiidae)

Egyptian Journal of Biological Pest Control

Table 5 Effect of different fusants of (Bt::Bs2) on a biological feature of the Phthorimaea operculella

Replicates		Mortality (%) of larval instars					Mean of larval penetration (%)	Mean of pupal malformation	Mean of adult malformation
Replicates		R1 (q)	R2 (q)	R3 (q)	R4 (q)	Mean (%)	Mean of larval penetration (%)	Mean of pupal malformation	Mean of adult malformation
Parental and fusion strains
Parental strains	Bt	20	40	20	40	30	75	15	45
Parental strains	Bs2	40	20	40	60	40	50	50	46
Fusants time	Fusants products
50 min	F 10	40	60	80	60	60	33	38	46
60 min	F 11	40	60	60	60	55	46	13	21
60 min	F 12	80	40	60	60	60	33	17	8
120 min	F 13	60	60	80	80	70	33	17	4
	Control	40	40	40	60	45	85	80	60
	Control + Media	20	40	40	0	25	67	67	67