پیوندهای مفید
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Effects of bacterial isolate, Priestia megaterium HB8 and its filtrate on Controlling the root-knot nematode, Meloidogyne incognita | ||
| Caspian Journal of Environmental Sciences | ||
| دوره 21، شماره 1، فروردین 2023، صفحه 105-114 اصل مقاله (1.22 M) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22124/cjes.2023.6200 | ||
| نویسندگان | ||
| Hadeel Badri Dawood* ؛ Saad Tareq Abdul Malek Yass | ||
| Department of Plant Protection, Agricultural Engineering Sciences Collage, University of Baghdad, Iraq | ||
| چکیده | ||
| This study was conducted to isolate biological control agents from soil samples surrounding the roots of uninfected cucumber, watermelon, eggplant, tomato, and okra plants in fields infested with root-knot nematodes and to evaluate their effectiveness. Therefore, fifteen bacterial isolates were selected to study their effects on the vitality of the second stage juveniles (J2) of the root-knot nematode, Meloidogyne incognita. Nine bacterial isolates showed a mortality rate of juveniles ranged between 80 and 100%, while isolate HB8 was unique in having a high ability to influence the vitality of the juveniles, as the mortality rate reached 100%. This isolate was chosen to test its effectiveness in inhibiting egg hatching. The results showed that the inhibition rate after 72 h of incubation reached 94.33%. The effect of the bacterial filtrate of isolate Priestia megaterium HB8 was tested using three concentrations (10, 20, and 30%) on the mortality rate of J2 and the inhibition rate of egg hatching. Moreover, the 30% concentration exhibited a high ability to increase the mortality rate of a juvenile to 97.66% after 48 h of incubation, while the inhibition rate of egg hatching was 96.66% after 72 h. | ||
| کلیدواژه‌ها | ||
| Priestia megaterium؛ Root-knot nematode؛ Meloidogyne incognita | ||
| مراجع | ||
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