EFFECTS OF COMBINING ABILITY OF HUSK TOMATO (<em>Physalis ixocarpa</em> Brot.) POPULATIONS

To determine the possibility to artificially cross different and genetically distant genotypes of husk tomato (Physalis ixocarpa Brot.) and to study their combining abilities, with two wild and three cultivated genotypes an study was undertaken via a 5x5 diallel. Cros-ses were made in a greenhouse at the Universidad Autónoma Chapingo (Chapingo, Méx.) during the winter of 1993-94. Crosses and parents were evaluated in the experiment station of this institution during the summer of 1994. Only from three crosses was the-re enough seed for the diallel with direct and reciprocal crosses. This is why the studied diallel was 3x3. ‘Salamanca’ produced the highest effect of general combining ability for fruit yield at first harvest, fruit weight, plant height, and fruit volume. On the other hand, in terms of nonadditive gene action, ‘Salamanca’ x ‘Rendidora’ showed an 138.7 % of heterosis with respect to the best progenitor for fruit yield at first harvest. Taking into account the high yield and heterosis this cross must be considered as an important one in the planning of the development of a hybrid varieties.

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Revista Chapingo Serie Ciencias Forestales y del Ambiente es publicada bajo una Licencia Creative Commons Reconocimiento-NoComercial-CompartirIgual 4.0 Internacional.

Electronic ISSN: 2007-4018
Print ISSN: 2007-3828

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