Supervivencia de Sclerotium rolfsii Sacc. en el suelo

By:

HERRERA I., L

Contributor(s):

Material type: Article

ArticleLanguage: Spanish Description: 13(2):34-38Subject(s): LOC classification:

28917

In: Centro AgricolaSummary: La supervivencia del micelio y la viabilidad de los esclerocios de Sclerotium rolfsii se estudiaron en condiciones naturales mediante el metodo de los segmentos de tallos de frijol colonizados en bolsas de malla plastica y enterrados a diversas profundidades. El micelio disminuyo su desarrollo luego de 100 dias colonizando restos de frijol llegando a solo un 5 por ciento a 25 cm de profundidad luego de 7 meses. Los esclerocios pierden su viabilidad a partir de los 60 dias, alcanzando entre 10 y 20 por ciento de germinacion a los 150 dias. La profundidad del suelo afecto sensiblemente la supervivencia del hongo. Se discute la importancia practica de estos resultados y su interrelacion con la incidencia de S. rolfsii sobre diversos hospedantes. (RA)Summary: The survival of mycelium and the viability of sclerotia of Sclerotium rolfsii were studied under natural conditions using the method of bean stem segment colonized in plastic net bags buried at different soil depths. Mycelium survival decreased after 100 days on bean stem segments, reaching only 5 percent at a depth of 25 cm at 7 mo. The sclerotia lost their viability after 60 days, reaching between 10-20 percent germination at 150 days. Soil depth greatly affected the survival of S. rolfsii. The practical importance of these results and their interrelationship with S. rolfsii incidence on several hosts are discussed. (AS)

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Item type	Current library	Collection	Call number	Copy number	Status	Date due	Barcode	Item holds
Journal Article	CIAT Library Document collection CINFOS	Document Collection CINFOS	28917 (Browse shelf(Opens below))	c.1	Short Loan		100064275

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Previous	28914 Digestibility of the globulin fraction of Phaseolus vulgaris seeds in mice	28915 Comportamiento de 12 lineas de caraota (Phaseolus vulgaris L.) en Cubiro, Edo. Lara	28916 Chemical control of Delia platura in Phaseolus vulgaris with seed and soil treatments in Chile	28917 Supervivencia de Sclerotium rolfsii Sacc. en el suelo	28918 Analisis de las caracteristicas fisicas y nutricionales de nueve variedades de frijol colorado	28919 Significance of a common epitope of plant and animal endomembranes	28920 The use of enzymic hydrolisis in vitro to study the digestibility of some Phaseolus seed proteins	Next

La supervivencia del micelio y la viabilidad de los esclerocios de Sclerotium rolfsii se estudiaron en condiciones naturales mediante el metodo de los segmentos de tallos de frijol colonizados en bolsas de malla plastica y enterrados a diversas profundidades. El micelio disminuyo su desarrollo luego de 100 dias colonizando restos de frijol llegando a solo un 5 por ciento a 25 cm de profundidad luego de 7 meses. Los esclerocios pierden su viabilidad a partir de los 60 dias, alcanzando entre 10 y 20 por ciento de germinacion a los 150 dias. La profundidad del suelo afecto sensiblemente la supervivencia del hongo. Se discute la importancia practica de estos resultados y su interrelacion con la incidencia de S. rolfsii sobre diversos hospedantes. (RA) spa

The survival of mycelium and the viability of sclerotia of Sclerotium rolfsii were studied under natural conditions using the method of bean stem segment colonized in plastic net bags buried at different soil depths. Mycelium survival decreased after 100 days on bean stem segments, reaching only 5 percent at a depth of 25 cm at 7 mo. The sclerotia lost their viability after 60 days, reaching between 10-20 percent germination at 150 days. Soil depth greatly affected the survival of S. rolfsii. The practical importance of these results and their interrelationship with S. rolfsii incidence on several hosts are discussed. (AS) eng