ISHS Acta Horticulturae 821: International Symposium on Tomato in the Tropics
MOLECULAR CHARACTERIZATION OF BEGOMOVIRUS AFFECTING TOMATO IN COLOMBIA, SOUTH AMERICA, AND IDENTIFICATION OF RESISTANCE SOURCES |
| Authors: | A.K. Martínez, F.J. Morales, F.A. Vallejo C. |
| Keywords: | Solanum lycopersicum, Bemisia tabaci, ToYMV |
| Abstract:
A begomovirus transmitted by the whitefly Bemisia tabaci to tomato in the Cauca Valley of Colombia was identified as Tomato yellow mosaic virus (ToYMV), based on a 91% nucleotide sequence identity when compared to the DNA-A component of ToYMV-Guadeloupe. The controlled exposure of tomato lines FLA 653-3-1-0, FLA 496-11-6-1-0, FLA 456-4, and FLA 478-6-3-1-11 to viruliferous B. tabaci whiteflies showed that FLA 456-4 was susceptible to virus infection and significant viral DNA accumulation in the absence of noticeable symptoms. On the contrary, FLA 653-3-1-0, FLA 496-11-6-1-0, and FLA 478-6-3-1-11 showed mild symptoms and viral DNA was barely detectable in most inoculated plants. These three lines also possessed desirable agronomic characteristics regarding fruit quality and yield. | |
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