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1

Zmiana skladu populacji grzyba Phytophthora infestans na ziemniaku i pomidorze

100%
Wnekowski S.
Ochrona Roślin
|
1994
|
tom 38
|
nr 09
3-4
2
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Wybrane elementy kompleksowej ochrony ziemniaka przed zaraza w Polsce w swietle zmian genetycznych w populacji grzyba Phytophthora infestans, jakie mialy miejsce w latach 1987-1991

80%
Sujkowski L. S.
Postępy Nauk Rolniczych
|
1995
|
tom 42
|
nr 3
79-96
In 1987-1991 a dramatic genetic shift occurred in P. infestans populations in Poland. This shift was expressed in electrophoretic pattems for gluco-6-phosphate isomerase (Gpi), peptidase (Pep), DNA fingerprints, specific virulence and sensitivity to metalaxyl. There was also a parallel breakdown in the resistance of the Polish potato cultivars Bronka and Bzura and some breeding lines of the Department of Genetics of the Potato Research Institute in Młochów caused by new migrating genotypes. This paper discusses the possible impacts of genetic changes in fungal populations on selected elements of late blight management, in particular on breeding potatoes durably resistant to late blight and chemical control. It postulates changes in breeding and management strategies that could enable obtaining durable resistance in potato cultivars and improve late blight management efficiency in Poland.
3

Oddzialywanie herbicydu Roundup na grzyby zasiedlajace ryzosfere traw

80%
Wachowska U., Banaszkiewicz T., Kurowski T. P.
Progress in Plant Protection
|
1999
|
tom 39
|
nr 2
658-661
4

Charakterystyka molekularna polskich szczepow grzyba Leptosphaeria maculans Ces.et de Not.

80%
Jedryczka M., Rouxel T., Balesdent M. H., Mendes-Pereira E., Bertrandy J.
Rośliny Oleiste - Oilseed Crops
|
1997
|
tom 18
|
nr 2
305-314
5

Ksztaltowanie sie fenotypowej struktury populacji Phytophthora infestans w Polsce w ciagu 15-lecia 1987-2001

71%
Zarzycka H., Sobkowiak S., Lebecka R., Tatarowska B.
Acta Agrobotanica
|
2002
|
tom 55
|
nr 1
389-400
The formation of phenotypic structure of P. infestans population in Poland was determined by analyzing 1603 isolates collected from 1987 to 2001. The race complexity, low at the beginning of experiment, has been increasing from year to year and reached in 2001 a high level 7.2 virulence factors per isolate. The single and less composed races dominating first1y in the population were replaced gradually by more composed races. The virulence factors 1, 2, 3, 4, 7 and 11 occurred most frequent1y, but factors 5 and 8 were noted sporadically. The A2 mating type was detected in 1988 at first and since that time its occurrence has been noted in Polish population each year. The oospores were formed in potato tissues. Race diversity, low at the beginning of the investigation, reached a peak in 1996-2001. During 1987-1990 weakly and middly aggressive phenotypes dominated in Polish population. In the later period very aggressive isolates were more frequent. Phenotypic race similarity of P. infestans populations in 1987 and 2001 was very low. The race structure of 1987 population was totally different from the race structure of populations of the next years. it was probably due to migration of new pathotypes. On the other hand the variation in complexity, diversity and similarity of races, as well as in aggressiveness observed in later years of investigation can be caused by the presence of both mating types and sexual recombination.
6

Porównanie populacji grzybów występujących na podstawie źdźbła pszenicy w województwie wielkopolskim i warmińsko-mazurskim

71%
Swierczynska I., Korbas M., Perek A.
Progress in Plant Protection
|
2010
|
tom 50
|
nr 1
The presence of pathogenic fungi at each stage of plant development may cause a reduction in grain quality and significant losses in yield. The aim of the presented study was to compare the population of the most commonly pathogens causing diseases of stem base of wheat in two important wheat-growing regions: in the Wielkopolska Province and the Warmia-Mazury Province. The material designed for investigating was collected in 2007–2008 and came from randomly chosen locations, most of which were individual farmlands. In order to identify pathogens, fragments of plants were taken (stem base) with symptoms of infestation by pathogenic fungi. Among the isolates obtained 66% constituted fungi of the genus Fusarium. But dominant pathogen in Wielkopolska was Rhizoctonia cerealis. Differences were found in populations of fungi on stem base of wheat in the explored areas.
7

Zagrozenie upraw ziemniaka przez zaraze ziemniaka w swietle zmian zachodzacych w polskiej populacji Phytophthora infestans

71%
Zarzycka H., Sobkowiak S.
Progress in Plant Protection
|
1997
|
tom 37
|
nr 1
171-177
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