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Pudriciones de papa en almacenamiento

Authors: Guzmán Naranjo, Julia.; Alvarado Espitia, Luis Felipe;

Pudriciones de papa en almacenamiento

Abstract

Se determinaron los microorganismos que ocasionan pudriciones en el tubérculo almacenado y el comportamiento de algunas variedades de papa con estos patógenos bajo diversas condiciones controladas. Después de desinfectar los cortes de tubérculos afectados con pudriciones, se sembraron en PDA y se incubaron a 20 grados centigrados, una vez aparecidas las colonias se trasplantaron nuevamente a cajas de Petri hasta obtener el cultivo puro. Los hongos se inocularon con sacabocado y las bacterias por punción en tubérculos sanos de las variedades Parda Pastusa, ICA-Puracé, Tuquerreña, Tocana blanca, Diacol-Sumapaz y Diacol Monserrate, almacenándolos luego a diferentes temperaturas y humedades relativas. Los microorganismos más comunes causantes de desórdenes fueron: Fusarium roseum, F. oxisporum, Phoma sp y Erwinia carotovora. La pudrición causada por las especies de Fusarium progresó a medida que aumentó la temperatura de almacenamiento, desarrollándose las lesiones más rápidamente a 29 grados centigrados, hubo restricción de las mismas a 4 grados centigrados. Los resultados de las inoculaciones indican que F. roseum causa pérdidas de importancia económica mucho más significativas que las pudriciones causadas por F. oxysporum. La Parda Pastusa, Diacol Monserrate y Tuquerreña fueron menos susceptibles a F. roseum que la Tocana y Diacol-Sumapaz. La pudrición por Phoma sp. progresa mejor a temperaturas entre 4 y 14 grados centigrados, poca luz y humedad relativa del 80 por ciento

Papa-Solanum tuberosum

Keywords

Enfermedades de las plantas - H20, http://aims.fao.org/aos/agrovoc/c_13551, http://aims.fao.org/aos/agrovoc/c_7429, http://aims.fao.org/aos/agrovoc/c_770, Bacteriosis, Raíces y tubérculos, Papa, Pérdidas por almacenamiento

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green