Title

trichoderma spp. y su efecto en la micoflora en semillas de maiz (zea mays) sembradas en campo

Author

JOSE LUIS ARISPE VAZQUEZ

Contributor

ABIEL SANCHEZ ARIZPE (Thesis Adviser)

MARÍA ELIZABETH GALINDO CEPEDA (Thesis Adviser)

MARIO ERNESTO VAZQUEZ BADILLO (Thesis Adviser)

ARNOLDO OYERVIDES GARCIA (Thesis Adviser)

RAÚL RODRÍGUEZ GUERRA (Thesis Adviser)

Access level

Open Access

Summary or description

"El maíz es uno de los principales cultivos para los mexicanos, siendo para consumo humano, forraje y para la industria, sin embargo, es afectado por enfermedades, en la que destaca la pudrición de la mazorca, el objetivo de este trabajo fue evaluar la capacidad de las cepas de Trichoderma asperellum T11, Trichoderma harzianum T1 4 y Trichoderma longibrachiatum T1 40 para reducir la incidencia y severidad de esta enfermedad. Las semillas se trataron con melaza al 5 % y Trichoderma spp. a 1x108 esporas/ ml, Captan como testigo químico en Coahuila y Benomyl 50 en Morelos y un testigo absoluto en ambos lugares, la siembra se realizó en un diseño de bloques completamente al azar, cuatro genotipos con cuatro repeticiones. Se evaluó a los 130 días, los datos se ajustaron mediante la transformación arco seno de la raíz cuadrada, la incidencia mediante un análisis fenotípico de las plantas, 15 en Coahuila y 50 en Morelos por repetición, la severidad por escala de León, (1997), los resultados se ajustaron mediante la transformación arco seno de la raíz cuadrada y se procesaron en un análisis factorial de bloques al azar AxB, 4 niveles en A y 5 en B, con 4 repeticiones, en el programa (FAUANL) versión 2.5, mediante Tukey con nivel de significancia de 0.05. Debido a condiciones climáticas y edáficas distintas, las cepas de Trichoderma se comportaron diferente, reduciendo la incidencia en Tepalcingo entre 29.83 al 18.43% y en Saltillo del 16.25 al 2.92% y la severidad en Tepalcingo entre 26.64 al 21.22 % y 28.52 al 23.20% en Saltillo"

"Maize is one of the main crops for Mexicans, being for human consumption, fodder and for industry, however is affect by diseases, in which corn rot stands out, the objective of this work was to evaluate the capacity of the strains of Trichoderma asperellum T11, Trichoderma harzianum T1 4 and Trichoderma longibrachiatum T1 40 to reduce the incidence and severity of this disease. The seeds were treated with 5% molasses and Trichoderma spp. at 1x108 spores / ml, Captan taken as a chemical control in Coahuila and Benomyl 50 in Morelos and an absolute control in both places, the seeding was carried out in a completely randomized block design, four genotypes with four replications. It was evaluated at 130 days, the data were adjusted by means of the transformation Sine arc of the square root, the incidence by means of a phenotypic analysis of the plants, 15 in Coahuila and 50 in Morelos by repetition, the severity by Leon scale, (1997 ), the results were adjusted by the transformation arc sine of the square root y were processed in a factor analysis of random blocks AxB, 4 levels in A and 5 in B, with 4 repetitions, in the program (FAUANL) version 2.5, by means of Tukey with significance level of 0.05. Due to different climatic and edaphic conditions, the Trichoderma strains behaved differently, reducing the incidence in Tepalcingo between 29.83 to 18.43% and in Saltillo from 16.25 to 2.92% and the severity in Tepalcingo between 26.64 to 21.22% and 28.52 to 23.20% in Saltillo"

Publish date

December 29, 2018

Publication type

Master thesis

Publication version

Published Version

Format

application/pdf

Language

Spanish

Audience

Students

Researchers

Source repository

Repositorio Digital CID-UAAAN

Downloads

0

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