Avtor/Urednik		Kus, Miloš; Pepelnjak, Marija; Vodenik-Eržen, Maša; Ravnikar, Maja; Mavrič, Irena; Bavec, Martina; Zadravec, Draga
Naslov		Viroze ječmena: zaključno poročilo o rezultatih opravljenega raziskovalnega dela za projekte v okviru ciljnih raziskovalnih programov
Tip		monografija
Kraj izdaje		Ljubljana
Založnik		Ministrstvo za znanost in tehnologijo
Leto izdaje		1998
Obseg		str. 17
Jezik		slo
Abstrakt		In period 1993-1996 in eastern Slovenia an extensive yellowing of lower leaves of winter barley was observed in early spring. This phenomenon being suspected to be caused by viruses intiated our two years investigations. A number of the most suspicious crops of winter barley were selected for visual observations and chemical analysis of soil samples Seorology (ELISA test) and electronmiscroscopy were utilized to identify viruses. Detailed information on aphid-vector flight and migration were provided by actaphid at Ptuj. In both years the infection by barley yellow dwarf virus (BYDV) was demostrated, but none by barley yellow mosaic virus(BYMV) and barley yellow stripe mosaic virus (BYSMV). There were detected two isolates from BYDV infected plants; PAV transmitted non specifically by Rhopalosiphum padi and Sitobion avenae, and RMV transmitted specifically by Rhopalosiphum maidis. Isolate MAV specifically transmitted by Sitobion avanea was not detected. The proportion of infected barley plants was small and was influenced by crop growth stage at the time of aphid migration. The autumn migration of main aphid vectors reached its peak before majority of crops emerged and young plants started to grow, or even before sawing. Besides this aphid migration in both years were small. Consequently it was concluded that extensive yellowing of lower leaves of winter barley in early spring 1996 and 1997 was not caused by mass-infections by barley yellow dwarf or other viruses attacking barley.
Deskriptorji		BARLEY LUTEOVIRUS APHIDS ENZYME-LINKED IMMUNOSORBENT ASSAY MICROSCOPY, ELECTRON