Abstract:
Evaluation ofperformance of differentpotato seed types grown in Khartoum State
Two experiments were conducted during winter seasons of 2009/2010 and 2010/2011
at the Experimental Farm of the College of Agricultural- Studies, Sudan University of
Science and Technology at Shambat. The main objective was toevaluate threedifferent
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types of seed(imported seed class E, first generation produced in Merowi Dam area
and farmer’s seed) usingseed potato tuber varieties( Bellini and Mondial) for growth
and yield. The parameters measured in the experiment included emergence, growth
estimation during growing season, yield and yield components, dry matter and
examine the virus infection during season pressure (PLRV and PVY) percentage.
Farmer seed and first generation seed were comparable in days to emergence and were
fasterthan imported seed inbothseasons. Numbers of stems were not significantly
different between treatments in both seasons. For crop cover, all seed types were
similar in season one, while farmer seed and first generation seed preformed similarly
and were highly better than imported seed in season two.The results showed
significant yield differences.The highest yield was obtained by first generation seed
type while the basic seed gave the lowest yield.The local types of seed tubers (first
generation and farmer seed) gave similar yields and wereboth better than the imported
seed in the second season. Two important viruses were identified as potato leaf roll
virus (PLRV) and potato virus Y (PVY), depending on sero-diagnosis using Double
Antibody Sandwich Elisa test (DAS Elisa test). Theincidences of these viruses werein
the range7.14-28.57%for PLRVand 0.0%-35.7 forPVY. The locally multiplied farmer
seedtubers showed the highest virusincidence compared toimported seed.First
generation seed tuber recorded similar percentage and were better than farmer
seedtubers. The lowest virus incidence was encountered by imported tubers.
