%0 Journal Article
%T CHARACTERIZATION OF PHYTOPATHOGENIC FUNGI, BACTERIA, NEMATODES AND VIRUSES IN FOUR COMMERCIAL VARIETIES OF HELICONIA (Heliconia sp.) CARACTERIZACI¨®N DE HONGOS, BACTERIAS, NEM¨¢TODOS Y VIRUS FITOPAT¨®GENOS EN CUATRO VARIEDADES COMERCIALES DE HELICONIA (Heliconia sp. )
%A Nathali L¨®pez Cardona
%A Jairo Casta£¿o Zapata
%J Revista Facultad Nacional de Agronom¨ªa, Medell¨ªn
%D 2012
%I Universidad Nacional de Colombia, Sede Medell¨ªn
%X . Analysis of 914 samples of roots, rhizomes, pseudostems, inflorescences and leaves of four commercial varieties of heliconia, cultivated at the municipality of Chinchin¨¢-Caldas (Colombia), allowed to identify five genera of plant pathogenic fungi (Rhizoctonia, Fusarium, Colletotrichum, Helminthosporium and Curvularia), three genera of plant pathogenic bacteria (Ralstonia, Pseudomonas and Erwinia), two species of viruses (Banana streak virus (BSV, Badnavirus,) and Cucumber mosaic virus (CMV, Cucumovirus,)), and seven genera of plant parasitic nematodes (Helicotylenchus, Tylenchus, Meloidogyne, Ditylenchus, Aphelenchoides, Pratylenchus, and Radopholus). Of these, Fusarium sp., affecting pseudostems, Pseudomonas sp., affecting leaves and inflorescences, and the plant parasitic nematodes Ditylenchus sp., Aphelenchoides sp., Pratylenchus sp. and Radopholus sp., are new records in the heliconia production in Colombia . The most limiting diseases corresponded to leaf blight, caused by Helminthosporium sp.; the bacterioses, caused by Pseudomonas sp.; the spotted stems, caused by Fusarium sp.; and soft rot of the pseudostems, caused by Erwinia sp. The pathogenicity tests demonstrated that Colletotrichum sp. and Phoma sp. are not pathogenic in leaves; while Fusarium sp., inoculated in pseudostems, Helminthosporium sp. and Pseudomonas sp., inoculated in leaves, and Colletotrichum sp. and Pseudomonas sp., inoculated in inflorescences, had incidence values of 83.3, 86.6, 93.3, 100.0 and 100.0%, respectively. Resumen. El an¨¢lisis de 914 muestras de ra¨ªces, rizomas, pseudotallos, inflorescencias y hojas de cuatro variedades comerciales de heliconia, cultivadas en el municipio de Chinchin¨¢-Caldas (Colombia), permitieron identificar cinco g¨¦neros de hongos fitopat¨®genos (Rhizoctonia, Fusarium, Colletotrichum, Helminthosporium y Curvularia), tres g¨¦neros de bacterias fitopat¨®genas (Ralstonia, Pseudomonas y Erwinia), dos especies de virus (Banana streak virus (BSV, Badnavirus,) y Cucumber mosaic virus (CMV, Cucumovirus,)), y siete g¨¦neros de nematodos fitopar¨¢sitos (Helicotylenchus, Tylenchus, Meloidogyne, Ditylenchus, Aphelenchoides, Pratylenchus y Radopholus). De ellos, Fusarium sp., afectando pseudotallos, Pseudomonas sp., afectando hojas e inflorescencias, y los nematodos fitopar¨¢sitos Ditylenchus sp., Aphelenchoides sp., Pratylenchus sp. y Radopholus sp., son reportes nuevos en la producci¨®n de heliconias en Colombia. Las enfermedades m¨¢s limitantes correspondieron al tiz¨®n foliar, causado por Helminthosporium sp.; la bacteriosis, causada por Pseudomonas sp
%K Heliconiaceae diagn¨®stico
%K enfermedades
%K patogenicidad
%K Heliconiaceae
%K diagnosis
%K diseases
%K pathogenicity
%U http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0304-28472012000200014