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Vertical and horizontal distribution of conidia of Pyrenophora teres in barley fields


, : Vertical and horizontal distribution of conidia of Pyrenophora teres in barley fields. Canadian Journal of Plant Pathology 6(4): 280-282

The numbers of airborne conidia trapped at various locations within and adjacent to a barley field indicated limited horizontal and vertical distribution. Numbers decreased rapidly as height of trap increased. Most conidia were trapped at < 1 m above ground level, regardless of time of day, and at wind speeds > 15 km/h.


Accession: 001507290

DOI: 10.1080/07060668409501529

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Related references

Martin R.A.; Clough K.S.; Johnston H.W., 1984: Vertical and horizontal distribution of conidia of pyrenophora teres in barley hordeum vulgare fields. The numbers of airborne conidia trapped at various locations within and adjacent to a barley field indicated limited horizontal and vertical distribution of P. teres. The numbers of conidia decreased rapidly as height of trap increased. The majori...

F.J.K.iper; M.G.cic; E.C.pio; H.W.llwork, 2008: Diagnostic microsatellite markers for the barley net blotch pathogens, Pyrenophora teres f. maculata and Pyrenophora teres f. teres. The barley net blotch pathogen Pyrenophora teres occurs in two forms, evident as spot (P. teres f. maculata) or net (P. teres f. teres) type symptoms. The two forms can be difficult to differentiate based on disease symptoms or spore morphology....

Tekauz A., 1990: Characterization and distribution of pathogenic variation in pyrenophora teres f teres and pyrenophora teres f maculata from western canada. Two hundred and nineteen isolates of Pyrenophora teres, collected in western Canada, together with five reference cultures, where characterized by their reaction on 12 barley differentials. Eighty-two percent of isolates were of the net symptom pr...

Suganda, T.; Wilcoxson, R.D., 1993: Pathogenicity of Pyrenophora teres f. teres and P. teres f. maculata, resistance of barley, and biological and environmental effects on selection for resistance to P. teres f. teres. In tests on 22 barley differentials, 24 different pathogenic types were identified among 34 isolates of P. teres f.sp. teres from Minnesota, California, Montana, North Dakota, Tunisia and Morocco. There were 16 pathotypes among the 26 isolates fro...

Smedegard-Petersen, V., 1971: Pyrenophora teres f. maculata f. nov. and Pyrenophora teres f. teres on Barley in Denmark. This new form of the pathogen, causing dark brown spots with distinct haloes, was widely distributed on barley in 1969-70. Mature perithecia were produced in culture by pairing compatible single spore isolates. Crosses betweeen typical net blotch...

Cartwright R.D.; Webster R.K.; Steffenson B.J., 1988: The sexual stage of pyrenophora teres in california usa barley fields. Phytopathology 78(12 PART 1): 1612

Lu, S.; Platz, G.J.; Edwards, M.C.; Friesen, T.L., 2011: Mating type locus-specific polymerase chain reaction markers for differentiation of Pyrenophora teres f. teres and P. teres f. maculata, the causal agents of barley net blotch. Fourteen single nucleotide polymorphisms (SNPs) were identified at the mating type (MAT) loci of Pyrenophora teres f. teres (Ptt), which causes net form (NF) net blotch, and P. teres f. maculata (Ptm), which causes spot form (SF) net blotch of bar...

Czembor, H.J., 1972: Research on the resistance of barley varieties to barley net blotch caused by Pyrenophora teres (Died./Drechsl.) stat. conid. (Helminthosporium teres Sacc.). Seedlings of 410 varieties were inoculated with an isolate from the variety Haisa II. Four varieties were highly resistant, all of them originating in Manchuria, as did eight out of a further 16 which showed only slightly lower resistance. Only tw...

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