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Revista mexicana de fitopatología

versión On-line ISSN 2007-8080versión impresa ISSN 0185-3309

Resumen

GONZALEZ-VEGA, María Esther et al. Antagonic effect of a biological product obtained from Burkholderia cepacia Palleroni and Holmes against Capnodium spp. in coffe seedlings (Coffea canephora P.) grown in vitro and in vivo. Rev. mex. fitopatol [online]. 2007, vol.25, n.2, pp.120-126. ISSN 2007-8080.

Sooty molds (Capnodium spp.) affect coffee seedlings during acclimatization. The objective of this study was to evaluate the effect of a biological product obtained from Burkholderia cepacia for control of this disease. Different concentrations of the product (50-250 mg L-1) were used to evaluate its effect on mycelial growth inhibition of Capnodium spp., as well as the effect of the biological product on infection index, growth (pairs of leaves, height and dry weight), total protein content, phenolics, and seedling survival. The results showed growth inhibition of Capnodium spp. up to 79.3% (200 mg mL-1). Total control of the disease was obtained (150 mg L-1) on clone M-28, and 95 and 90% on clones M-229 and K-234 (150-200 mg mL-1), respectively. In addition, it was observed a better behavior of growth indicators: proteins, phenolics, and seedling survival. The results corroborated the feasibility of the use of this biological product for control of sooty molds in coffee seedlings during acclimatization.

Palabras llave : Rhizobacterias; biocontrol; pseudomonads; sooty molds.

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