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Evidence of the existence of physiologic races of alternaria solani in tomato plantations in cuba

, : Evidence of the existence of physiologic races of alternaria solani in tomato plantations in cuba. Revista de Ciencias Biologicas 12(2): 223-234

Detached leaves and leaflets from different tomato lines and commercial varieties inoculated with mycelial discs of A. solani to determine the degree of pathogenicity was a more practical and quicker method than inoculations by foliage spore sprays. Some strains with high sporulation capacity lose their pathogenicity; others maintain it a long time in laboratory conditions.

Accession: 005411779

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Related references

Henning, R.G.; Alexander, L.J., 1959: Evidence of existence of physiologic races of Alternaria solani. Evidence of the existence of physiologic races of Alternaria solani has been obtained. From 180 single-conidial isolates obtained from infected tomato leaves collected in Ohio, 10, selected on the basis of cultural differences, were tested for pat...

Henning, R.G.; Alexander, L.J., 1952: Evidence of existence oi physiologic races of Alternaria solani (Ell. & Mart.) Jones & Grout. Of 180 monoconidial isolates of Alternaria solani obtained from tomato leaves in Ohio, ten were selected on the basis of cultural differences for pathogenicity tests. Fragmented mycelial suspensions were sprayed on six-week-old seedlings of tomato...

Henning, R.C.; Alexander, L.J., 1952: Evidence of existence of physiologic races of Alternaria solani (Ell. and Mart.) Jones and Grout. Evidence of seven physiological races of A. Solani has been obtained, as a result of tests on seedlings of Lycopersicon spp.

Kaul, A.K.; Saxena, H.K., 1988: Physiologic specialization in Alternaria solani causing early blight of potato. I. Cultural and physiologic variability. Four cultural groups of the pathogen were distinguished among 92 single-spore isolates from 34 potato cultivars in 9 Indian States. The groups differed in cultural and certain physiological characters and also reacted differently to temp. and pH o...

Mehta, P.; Vyas, K.M.; Saksena, S.B., 1975: Pathological studies on fruit rot of tomato caused by alternaria solani and alternaria tenuis. Among various methods of inoculation tried, Granger and Horne's method was the most successful. The effects of temperature, relative humidity, age of the pathogen and age of the fruits were studied: C, 100% [RH]relative humidity, a...

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Weir, T.L.; Huff, D.R.; Christ, B.J.; Romaine, C.P.ter, 1998: RAPD-PCR analysis of genetic variation among isolates of Alternaria solani and Alternaria alternata from potato and tomato. Random amplified polymorphic DNA-PCR (RAPD-PCR) analysis was used to investigate genetic variation among 35 isolates of Alternaria solani, the causal agent of early blight on solanaceous crops, and 30 isolates of A. alternata, an opportunistic pat...

Madalageri, B.B.; Dharmatti, P.R.; Srikant Kulkarni; Madalageri, M.B., 1988: Screening of tomato genotypes for combined resistance to Stemphylium solani, Alternaria solani and Septoria lycopersici. When 58 genotypes from India, USA, Taiwan and the Netherlands was screened under epiphytotic conditions during 1987, 25 showed field resistance to Stemphylium solani, 23 to Septoria lycopersici and 19 to A. solani. The most common cultivar, Pusa R...

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