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Reactions of winter wheat to Mycosphaerella graminicola [anamorph Septoria tritici]

100%

Vechet L., Sychrova E.

Acta Agrobotanica

2005

tom 58

nr 1

Reaction of six winter wheat culti vars and lines (Vlasta, Šárka, Charger, 00ST022, SG-U8044C a SG-U2113B) to Mycosphaerella graminicola isolate BR-331 and UH-05 on leaf segments of the detached second seedling leaf of cultivars placed on water agar with bezimidazole in clear plastic box were tested. The isolate BR-331 produced high occurrence of the disease in the cultivar Šárka, middle occurrence (the percentage covered by lesions bearing pycnidia) in the cultivar Vlasta and SG-U8044C and low occurrence in the line 00ST0022. The isolate UH-105 produced high occurrence in the cultivar 00ST022 and middle occurrence in the cultivar Vlasta. The cultivar Charger was resistant. The cultivar Šárka was attacked at least. Results show on different virulence of M. graminicola isolates to wheat cultivars.

Occurrence of Stagonospora nodorum glume blotch of wheat in the region of middle-southern Poland

84%

Glazek M., Krzyzinska B., Maczynska A.

Acta Agrobotanica

2005

tom 58

nr 1

Long-term research work was performed in the years 1996-2002 on the occurrence and significance of winter wheat glume blotch (Stagonospora nodorum) in the region of middle-southern Poland. It was stated that the disease occurred every year at different intensity and this was dependent on the amount of rainfall during the vegetative period, especially in June. Winter wheat was strongly infected in the years 1999 and 2002 when rainfall in June was the highest. The lowest level of infection was recorded in the year 2000 characterized by the lowest rainfall in this month. Full chemical protection with broad spectrum fungicides performed once at GS 49-55 and always significantly increased grain yield, but the increase was the highest in the years of the highest ear infection by S. nodorum. It was concluded that in experimental period glume blotch of winter wheat could be considered as a disease of the greatest importance in the region of middle - Southern Poland, and thus creation a serious threat to winter wheat cultivated in this area.

Ograniczanie wyników

2 Acta Agrobotanica

1 Glazek M.

1 Krzyzinska B.

1 Maczynska A.

1 Sychrova E.

1 Vechet L.

2 2005

Wyniki wyszukiwania

Reactions of winter wheat to Mycosphaerella graminicola [anamorph Septoria tritici]

Occurrence of Stagonospora nodorum glume blotch of wheat in the region of middle-southern Poland