RESEARCHES CONCERNING THE CARYOPSES MICOFLORA OF WHEAT TO THE VARIETIES GROWN IN MODELU LOCATION, CALARASI COUNTY PUBLISHEDCarmen Mihaela CRISTEA, M. BERCA
The researches has been conducted on seeds of common wheat, durum fall wheat (Auradur) anddurum spring wheat Floradur grown in SC” Probstdorfer Saatzucht” Romania SRL, location Modelu,Calarasi County. The biological material was represented by wheat seeds with black-point attack and frees ofthis attack, of the following varieties: Capo, Pedro, Atrium, Astardo, Arnold, Balaton, Pireneo, Bitop, Fulvio,Fabula, Ludwing, Midas, Phillip, Josef, Peppino, Auradur, Floradur. The observations on the black-pointattack on wheat seeds led to determine the frequency of attacks to the monitored varieties. Research has beenperformed in the laboratory of Phytopathology of the Faculty of Agriculture of the University of AgriculturalSciences and Veterinary Medicine of Bucharest.The macroscopic and the microscopic identification of fungiin biological studied material was done by isolating and repeated sub culturing procedure of the pathogens onPDA (potato-dextrose-agar) culture medium and incubating them at thermostat at 24 C. There were identifiedfungi of the genus Alternaria, Stemphylium, Fusarium, Aspergillus, Cladosporium, Rhizopus, Penicillium. Itwas remarked high incidence of Alternaria spp species (60-68%), Stemphylium spp (17 to 20.5%), Fusariumspp (10-12%) for seeds black-point attack. In was found present in complex micromycetes Alternaria andStemphylium. The pathogen Cladosporium herbarum had a frequency between 1-2%. Of the varieties ofcommon fall wheat, to the variety Capo was recorded most frequently the black - point attack (F = 8%). Thevariety Auradur had a low frequency of black-point attack (2%) while to the variety Floradur the black-pointattack incidence was 6.5%.
winter wheat, durum wheat, variety, fungus