Inhibitory Activity Of Some Plant Extracts On The Multiplication Of Potato Virus Y (PVY).

Jarjees, M.M.; Al-Ani, R.A.; A.K,; AL-Azawi,

	Inhibitory Activity Of Some Plant Extracts On The Multiplication Of Potato Virus Y (PVY).
The Iraqi Journal of Agricultural Science
Article 1, Volume 39, Issue 5, 2008, Pages 109-117
Authors
M.M. Jarjees; R.A. Al-Ani; ;
Abstract
This experiment was conducted to determine the inhibitory efficiency of thuja Thuja orientalis L. (leaves, branches, fruits) extract, petal leaves of Eugenia caryophyllala extract and peel of pomegranate Punica granatum L. on the multiplication of potato Y potvirus (PVY). The alcoholic extracts were prepared for the above plants and the inhibitory activity for each plant extract was tested at different concentration levels. Enzyme Linked Immunosorbent Assay (ELISA) as a serological test was used to determine the virus concentration in treated plants. Results showed that the application of extracts from Thuja, pomegranate peel and tannic acid on the PVY inoculated plants at 5 g/l led to complete inhibition of the virus multiplication within 8, 16 and 16 days respectively. The spraying of pomegranate peel extract at 3g/l on the PVY inoculated plants was not completely inhibited the virus, while the spraying of thuja extract at the same concentration was inhibited the virus multiplication within 17 days from inoculation. The application of Thuja and pomegranate peel extracts were protected the plants from viral infection for 12 and 8 days respectively. There was no inhibitory effect observed on plants treated with the extract of petal leaves of Eugenia caryophyllala. Results of this experiment also indicated that the major active ingredient in studied plants is tannic acid. There was no significant damage occurred on the treated plants.

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