Inhibitory activity of certain natural products on the growth of ascosphaera apis

الملخص EN

This work was carried out to study the effect of some essential oils (amalaki ; celery ; chamomile ; cinnamon ; cloves ; fennel ; fenugreek ; garlic ; ginger ; henna ; jojoba ; onion ; pepper ; peppermint ; rose ; thyme ; violet ; and worm-wood) and some honeybee products (honey and propolis) against Ascosphaera apis causing chalk brood disease in honeybee larvae under laboratory condition.

The highest reduction of mycelium growth was obtained by cinnamon ; cloves ; rose ; thyme oils and propolis, 74.44, 71.11, 66.11, 71.44 and 68.11% respectively.

Celery ; chamomile ; garlic ; jojoba ; pepper and peppermint oils, were exhibited the moderate inhibition against the causal pathogen since the growth reduction to 50.0, 46.78, 48.11, 56.33, 55.89 and 40.78%, respectively.

While, fennel; ginger; henna; onion and worm-wood oils had a little inhibition against A.

apis, where the growth reduction to 20.33, 25.89, 27.44, 29.67 and 18.11%, respectively.

While, some products such as amalaki ; fenugreek; violet oils and fennel honey don't show any inhibition effects against the growth of the fungi