Resistance spectra of wheat cultivars and virulence diversity of Magnaporthe grisea isolates in Brazil
By A. S. Urashima, Norberto A. Lavorent, A. Goulart, Y. R. Mehta. 2004
107 citations recorded by the source corpus.
Seventy-two monoconidial isolates of Magnaporthe grisea were obtained from the States of Mato Grosso do Sul and Parana. The isolates were inoculated on seedlings of 20 wheat (Triticum aestivum) cultivars under greenhouse conditions. The virulence diversity of M. grisea was assessed based on compatible and incompatible reactions of leaf blast on wheat cultivars. Fifty-four distinct virulence patterns were identified on test cultivars among the isolates collected from the two wheat growing States. Sixteen of these isolates corresponding to 22.2% showed similar virulence pattern. None of the wheat cultivars was resistant to all isolates of M. grisea, but the cultivars differed in degree of resistance as measured by the relative spectrum of resistance (RSR) and disease index (DI). Among the cultivars the RSR ranged from 0 to 53.3% and DI from 0.4662 to 0.9662 (0 to 1 scale). The wheat cultivar BR18 exhibited a broad resistance spectrum in relation to the rest of the tested cultivars to the isolates of M. grisea, and can be used in wheat resistance breeding.
Subfields: Cell Biology, Plant Science
View Paper: https://www.semanticscholar.org/paper/ed6913ee93602759fb8fd489a4569347452a4807
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In Plant Science
Citations in the corpus
- The challenges of maintaining wheat productivity: pests, diseases, and potential epidemics (2007, background): “Yet due to the host range—maize and triticale are susceptible—it also is a potential threat to these crops (Urashima et al. 2005). Recent studies have shown that wheat blast did not originate from the rice blast fungus and that rice and wheat strains were genetically different (Urashima et al. 2004,”
- Pyricularia blast - a threat to wheat cultivation. (2018, background): “Urashima A.S., Lavorent N.A., Goulart C.P., Mehta Y.R. (2004): Resistance spectra of wheat cultivars and virulence diversity of Magnaporthe grisea isolates in Brazil.”