Producción de variedades de tomates para los trópicos húmedos

Abstract

A breeding program was initiated at the Inter-American Institute of Agricultural Sciences in Irialba Costa Rica, to develop tomato varieties resistant to injection by Phytophthora infestans and producing high yields under conditions of high temperatme and bigh bumidity. The Turrialba variety was developed by selection among segregating progenies of Cuban Marglobe x a wild tomato of Costa Rica. It produced higher yields in Turrialba than Master Marglobe, Stokesdale, Southland, Bonny Best, Rutgers, San Marzano and other varieties tested. Tomato lines yielding better than Turrialba were obtained by selection from segregating progenies of Turialba x Bonimar from Australia, Imrialba x Institute Introduction No. 2313 (a wild tomato variety from Colombia), and Bonimar x Introduction No 2313 None of the lines showed an appreciable degree of resistance to infection with Phytophthora infestans when spores of this fungus were sprayed on the young plants.