Występowanie septoriozy paskowanej liści pszenicy w latach 1994–1996 [Occurrence of Septoria tritici blotch in 1994–1996]

Abstract

The aim of the work was to study an occurrence and intensity of septoria tritici blotch on wheat in different regions of Poland as well as reaction of winter wheat cultivars and breeding lines to infection by Mycosphaerella graminicola (Fuckel) Schroeter (an. Septoria tritici (Rob. ex Desm .) under field conditions. Observation conducted during 1994–1996 indicated on occurrence of septoria tritici blotch each year and on important infection degree of winter wheat by Mycosphaerella gruminicola in some regions of the country. The highest infection was noted in 1995 and the lowest in 1994. Infection degree for majority of cultivars was quite high. Some cultivars and lines were characterized by very high infection. Among them were the old (Kujawianka Więcławska and Wysokolitewka Sztywnosłoma) and the newest (Tercja) cultivars. On some old cultivars (Leszczyńska Wczesna and Żelazna) even no traces of infection were observed although favourable weather condition existance and the presence of neighbourhood diseased plants. Field observation of cultivars and breeding lines showed different reaction of tested wheat genotypes to Mycosphaerella graminicola infection.