تقويم أولي لفعالية محرض المقاومة Acibenzolar-S-Methyl (ASM)‎ في تحفيز استجابات الدفاع و النمو عند نباتي البندورة-الطماطم و الباذنجان تجاه الإصابة بنيماتودا تعقد الجذور Meloidogyne incognita

Abstract EN

This study aimed to evaluate the efficiency of Acibenzolar-S-Methyl (ASM) on some vegetative parameters (height, number of flowers, fruit set, root and foliage fresh weight) and resistance responses of tomato and eggplant to root-knot nematodes Melodigyne spp.

under greenhouse conditions.

Plants treated with different concentrations (30, 50, 70, 90 ppm) of ASM, and then inoculated with 2000 juvenile/ml nematodes suspension.

The experiments were conducted over two different periods.

Results obtained showed a decrease in number of root-knot nematodes in ASM treated plants.

Treatment with 50 ppm of ASM showed superiority to all other ASM treatments, where the average number of galls was 35.5 % in tomato and 18.1% in eggplant as compared to root-knot infected control.

In tomato, 50 ppm ASM treatment significantly increased all studied plant growth indicators.

Fruit set increased by 18.2% following 70 ppm ASM treatment as compared to the healthy control.

In eggplant, the ASM concentrations had a different effect on all growth indicators studied, whether healthy or infected with root-knot.