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Search for "ONDŘEJ M.": 14 articles found.
ONDRÁČKOVÁ E., ONDŘEJ M., PROKINOVÁ E., NESRSTA M. (2013): Mycoparasitic fungi reducing the incidence and virulence of Bipolaris sorokiniana. [mycoparasitic activity, mycoparasitic fungi, Clonostachys, Trichoderma, Bipolaris sorokiniana] Czech Mycology 65(1): 103-112 (published: 10th June, 2013)
abstract
The mycoparasitic efficiency of 28 strains/isolates of Clonostachys rosea f. rosea and Clonostachys rosea f. catenulata against the pathogenic fungus Bipolaris sorokiniana was determined in dual cultures on Czapek-Dox nutrient agar. Strains with low and medium efficiency were antagonistically inhibited by B. sorokiniana, and inhibitory zones were formed between the colonies of both fungi. The mycelium of Clonostachys strains with high efficiency overgrew and degraded B. sorokiniana colonies without formation of an inhibitory zone. In dual cultures, Trichoderma sp. and the most effective Clonostachys strains degraded B. sorokiniana colonies within 3 to 5 and 12 to 15 days, respectively.When rye seeds were treated with a mixture of C. rosea f. rosea, Trichoderma sp. and B. sorokiniana, development of B. sorokiniana on both seeds and seedlings was reduced when compared with a B. sorokiniana treatment. The treatment of rye seeds with Clonostachys and Trichoderma had a positive effect on seed germination and seedling length.
ONDŘEJ M. (1996): Seven little known species of the genus Alternaria. [Alternaria spp., A. caricina spec, nov., Czech Republic, taxonomy] Czech Mycology 49(2): 119-127 (published: 13th October, 1996)
abstract
The occurrence of seven little known Alternaria species (Fungi Imperfecti, Hyphomycetes, Dematiaciace) collected in they ears 1969 to 1994 in the Czech Republic is reported and their morphological characteristics presented. They cover two species described by the author, A. calendulae (Ondřej 1974) and A. thalictrina (Ondřej 1974), a new combination: A. anthyllidis (Baudyš) Ondřej comb. nov. and three hitherto unknown species to the Czech Republic: (A. helianthinficiens Simmons, A. leucanthemi Nelen, and A. infectoria Simmons). A new species A. caricina Ondřej spec, nov., is described from leaves of Carex brizoides L. Additional taxonomical characters (size of conidial scars) are given for each species.
ONDŘEJ M. (1991): A new species Phomopsis fabae Ondřej. Česká Mykologie 45(3): 65-67 (published: 31st October, 1991)
abstract
The author found a new parasitic fungus Phomopsis fabae Ondřej (Fungi imperfecti, Sphaeropsidales) on stems of Faba bona Medic., causing faba bean stem cancer in Czechoslovakia, Germany and Poland.
ONDŘEJ M. (1989): Key to the species of Drechslera Ito sensu lato on the territory of Czechoslovakia. Česká Mykologie 43(1): 45-50 (published: 6th February, 1989)
abstract
The key to Drechslera Ito sensu lato is arranged only for species found on the territory of Czechoslovakia. The individual species are distinguished on the basis of their conidium size and shape. The list of 20 species having been observed on the 34 host plants is included. The key includes anamorphs also assigned to Bipolaris and Exserohilum based on morphological and teleomorph distinctions. Practical methods for isolating and preparing diagnostic material from infected leaves are discussed.
ONDŘEJ M. (1988): New species of Drechslera Ito in Czechoslovakia. Česká Mykologie 42(2): 84-89 (published: 10th May, 1988)
abstract
Three new species of Drechslera Ito (Fungi imperfecti, Hyphomycetes, Dematiaceae) from Czechoslovakia are treated: D. triseti Ondřej, D. flavispora Ondřej and D. holci Ondřej. Historical taxonomic context, differentiation from similar species, and details on host plants are given.
ONDŘEJ M. (1988): Pyricularia luzulae Ondřej sp. n. Česká Mykologie 42(2): 81-83 (published: 10th May, 1988)
abstract
The author found a parasitic fungus (Fungi imperfecti, Hyphomycetes, Dematiaceae) on the leaves of Luzula sylvatica in the year 1973, taxonomic classification of which was not clear. In the years 1983–1984 new collections made possible to carry out its detailed study and to class the fungus with the genus Pyricularia Saccardo (Pyricularia luzulae Ondřej sp. n.). The fungus was found even on the leaves of Luzula luzuloides in the years 1984–1985. Full morphological comparison with similar species is included.
ONDŘEJ M. (1984): Funde von parasitischen imperfekten Pilzen Cercospora Fres. Aus der Tschechoslowakei (Teil III.). Česká Mykologie 38(4): 230-234 (published: 1984)
abstract
The fungi Gliocladium roseum, Trichothecium roseum, Trichoderma harzianum, Trichoderma viride, Penicillium cyclopium and Acremoniella atra were isolated from onion bulbs infected with parasitic fungi Botrytis allii, Botrytis cinerea, Botrytis squamosa, Sclerotium cepivorum and Fusarium oxysporum. Some of them exhibited antagonistic effects on the pathogens causing storage rots under in vitro and in vivo conditions.
ONDŘEJ M. (1984): Pollaccia spiraeae (Karakulin) Ondřej. Česká Mykologie 38(1): 46-48 (published: 1984)
abstract
The author reclasses a species Fusicladium spiraeae Karakulin with the genus Pollaccia Bald. et Cif. (Fungi imperfecti) on the basis of revision of the specimen collection in Herb. LE, from the U.S.S.R.
ONDŘEJ M. (1984): The genus Deightoniella Hughes in Czechoslovakia. Česká Mykologie 38(1): 39-45 (published: 1984)
abstract
Three species of Deightoniella Hughes (Fungi imperfecti) from Czechoslovakia are treated in this paper: D. arundinacea (Corda) Hughes, D. caricina (Bresadola) Ondřej and new species D. alni Ondřej.
ONDŘEJ M. (1983): Auftreten der Gattung Ascochyta Lib. an Pflanzen der Familie Apiaceae. Česká Mykologie 37(2): 77-82 (published: 1983)
abstract
The author presents the occurrence of six species of the genus Ascochyta Lib. found in Czechoslovakia between 1967–1981 on plants from the family Apiaceae. A new species, Ascochyta carvi Ondřej, was found on caraway (Carum carvi L.), causing death of emerging seedlings and drying out of the plants after flowering. The disease is seed-transmitted.
ONDŘEJ M. (1983): Zum Auftreten von Pilzen der Gattungen Drechslera Ito und Dendryphion Wallroth (Fungi imperfecti) auf dem Flachs in der Tschechoslowakei. Česká Mykologie 37(2): 72-76 (published: 1983)
abstract
In the years 1975–1980, the occurrence of three species of fungi of the genus Drechslera Ito and one species of Dendryphion Wallroth was found on flax plants (Linum usitatissimum L.) in Czechoslovakia. Two of the reported species had not previously been detected on flax in Czechoslovakia — Drechslera lini (Gentner) Ondřej and Dendryphion nanum (C. G. Nees) Hughes.
ONDŘEJ M. (1974): Mykofloristische Notizen I. Centrospora Neerg. Česká Mykologie 28(3): 185-188 (published: 1974)
abstract
The fungi of the genus Entomophthora are mostly obligate parasites in nature. Due to their high demand for organic nitrogen, they are difficult to isolate and especially to maintain in permanent culture compared to other entomopathogenic fungi. In the Prague collection, the best results were obtained using coagulated yolk medium (Müller-Kogler 1959), or media enriched with casamino acid compounds (Krejzová 1970).
ONDŘEJ M. (1973): Neue und wenig bekannte Pilze der Gattung Fusicladium Bonorden an Pappeln (Populus L.) und an Weide (Salix L.). Česká Mykologie 27(4): 236-240 (published: 1973)
abstract
Three imperfect fungi of the genus Fusicladium (Hyphomycetes) occurring on poplar (Populus) and willow (Salix) are described. These species, forming conidia in chains, were previously misidentified as young stages of other taxa. The study is a continuation of previous work and is based on herbarium revisions from European and North American collections.
ONDŘEJ M. (1971): Fungi of the genus Fusicladium Bonorden, developing conidia in chains (Hyphomycetes, Fungi imperfecti). Česká Mykologie 25(3): 165-172 (published: 1971)
abstract
Rare species of the genus Fusicladium collected in Moravia are described, including two new species: F. virgaureae Ondřej spec. nov. and F. convolvularum Ondřej spec. nov. Morphological revisions of previously known species are also presented. This study updates the taxonomy and geographic distribution of the group in Czechoslovakia.
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