Articles
TOMATO BREEDING RESISTANCE TO LATE BLIGHT IN WESTERN MEXICO
Article number
914_83
Pages
433 – 436
Language
English
Abstract
Late blight caused by Phytophthora infestans is one of the most devastating diseases of tomato cultivation in western Mexico.
Annually large sums of money are spent for its control, which significantly increases production costs.
In the group of tomato breeding research at the University Center of Biological and Agricultural Sciences located in Zapopan, Jalisco, Mexico, we have worked for some time in screening sources of resistance to P. infestans and other pathogens.
We are working with wild species of Solanum lycopersicon var. cerasiforme collected in the western region of Mexico and materials generated through crosses and backcrosses between wild materials and open pollinated cultivars.
We have selected 9 breeding lines which were tested under natural infection of P. infestans both in field and greenhouse.
The reaction of genotypes was evaluated following the methodology calculating the area under the curve of the disease, under laboratory conditions, using detached leaf inoculation and compared against LA 2533 resistant and Rio Grande and San Marzano susceptible cultivars.
Breeding lines have proven resistant, statistically equal or superior to the LA 2533 in field and laboratory tests using highly virulent strains of P. infestans collected in the Toluca Valley, Mexico State.
Annually large sums of money are spent for its control, which significantly increases production costs.
In the group of tomato breeding research at the University Center of Biological and Agricultural Sciences located in Zapopan, Jalisco, Mexico, we have worked for some time in screening sources of resistance to P. infestans and other pathogens.
We are working with wild species of Solanum lycopersicon var. cerasiforme collected in the western region of Mexico and materials generated through crosses and backcrosses between wild materials and open pollinated cultivars.
We have selected 9 breeding lines which were tested under natural infection of P. infestans both in field and greenhouse.
The reaction of genotypes was evaluated following the methodology calculating the area under the curve of the disease, under laboratory conditions, using detached leaf inoculation and compared against LA 2533 resistant and Rio Grande and San Marzano susceptible cultivars.
Breeding lines have proven resistant, statistically equal or superior to the LA 2533 in field and laboratory tests using highly virulent strains of P. infestans collected in the Toluca Valley, Mexico State.
Publication
Authors
L.J. Arellano-Rodríguez, J.L. Martínez-Ramírez, E. Rodríguez-Guzmán, J. Ron-Parra , M. Cruz Arriaga-Ruiz
Keywords
tomato, Phytophthora infestans, resistance
Online Articles (92)