Occurrence of Viruses Affecting Potato Crops in Khartoum State-Sudan |
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| Authors: | Nafisa H Baldo Siddig M Elhassan Mustafa M A Elballa |
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| Institution: | (1) Agricultural Research Corporation, Shambat Research Station, P.O.Box 30, Khartoum, Sudan;(2) Faculty of Agriculture, University of Khartoum, P.O.Box 32, Shambat, Sudan |
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| Abstract: | The incidence of Alfalfa mosaic virus (AMV), Potato leafroll virus (PLRV), and Potato virus Y (PVY) in potato crops derived from various types of seed potatoes was assessed visually and confirmed by direct tissue blot
immunoassay, over two winter growing seasons (1999/2000, 2000/2001) at three locations, Elnaiya, Elshehinab, and Shambat in
Khartoum State, the main potato growing region in Sudan. Virus infection was most prevalent in 2000/2001. In general, crops
grown directly from imported certified seed potatoes and from “improved seed”, produced in Sudan from imported basic seed,
showed the lowest levels of PLRV and PVY compared with crops grown from Sudanese farm saved seed. For AMV, however, only crops
grown directly from imported certified seed potatoes had low levels of AMV. Crop location also affected virus incidence, although
this varied with year. For AMV, levels were similar at all locations in 1999/2000, but were greatest at Elnaiya in 2000/2001.
For PVY, levels were greatest at Elnaiya in 1999/2000 and Shambat in 2000/2001. For PLRV, no symptoms were observed in 1999/2000
and virus levels were similar for all locations in 2000/2001. This study reports for the first time the occurrence of AMV
in potatoes grown in Sudan. |
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