Isolation and efficacy of native chitinolytic rhizobacteria for biocontrol activities against Fusarium wilt and plant growth promotion in pigeon pea (Cajanus cajan L.)

Egyptian Journal of Biological Pest Control

Table 1 Zone of chitin hydrolysis and chitinase activity exhibited by the selected efficient rhizobacterial isolates

Bacterial isolates	Size of clear halo around bacterial colonies (diameter in mm)	Chitinase activity (U mg⁻¹ protein)
P-2	2.60 ± 0.05^J	483.67 ± 23.80^CD
P-3	4.05 ± 0.02^H	406.33 ± 24.12 ^DE
P-5	4.50 ± 0.00^G	284.09 ± 16.81^F
P-10	4.10 ± 0.05^H	324.68 ± 24.21^EF
P-13	3.45 ± 0.03^I	447.67 ± 49.78 ^CD
P-14	4.05 ± 0.02^H	397.56 ± 36.76 ^DE
P-16	6.35 ± 0.07^F	497.17 ± 15.21 ^CD
P-17	7.85 ± 0.07^C	441.66 ± 5.78 ^CD
P-18	7.50 ± 0.00^D	485.22 ± 5.87 ^CD
NS-1	8.55 ± 0.02^A	632.73 ± 27.46^B
NS-2	6.65 ± 0.08^E	538.03 ± 78.38^BC
NS-17	8.80 ± 0.10^A	542.45 ± 20.76^BC
NS-22	8.15 ± 0.07^B	798.35 ± 30.45^A

Note: Values following with the same letter are not significantly different according to DMRT test at P ≤ 0.05