Morphologic variability in the tomato pajarito (Lycopersicon esculentum var. cerasiforme), a precursor of cultivated tomato.
To study the phenotypic variability of a “cherry” collection of tomato of the type in comparison with the vintage tomato cultivar 'Marglobe', an experiment was carried out at “La Selva”, Research Centre of Corpoica, located in Rionegro, Antioquia, at 2,120 masl, with an average temperature of 170C and a relative humidity of 78%. Fifty descriptors were evaluated in this study, 39 were qualitative and l1 quantitative. Polymorphism was found in 34 out of 39 qualitative characteristics, and in the 11 quantitative variables. The qualitative, quantitative and qualitative-quantitative clusters analysis obtained with the polymorphic variables did not show a clear pattern of distribution between materials from the Origin Centre (Perú-Ecuador) and from the Domestication Centre (México-Central America). These results show ample qualitative and quantitative variability in the cherry type tomato collection, as well as ample distribution and arrangement of characters within individual accesions, which indicates the great potential to use this collection as well as in breeding programs. The qualitative-quantitative phenogram obtained by transforming the last type of variables to additive binary scales, with a maximum of four values by characteristic, exhibited discriminatory power between the cherry type tomato and the vintage cultivar 'Marglobe', which was not so clear for the qualitative phenogram based on binary values for the variables and for the quantitative phenogram based on distances obtained from standardized variables.
| Main Authors: | , |
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| Format: | info:eu-repo/semantics/article biblioteca |
| Language: | spa |
| Published: |
Corporación Colombiana de Investigación Agropecuaria (Agrosavia)
2001
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| Subjects: | Tomate, Análisis cuantitativo, Hortalizas y plantas aromáticas, |
| Online Access: | http://revista.corpoica.org.co/index.php/revista/article/view/186 http://hdl.handle.net/20.500.12324/33868 |
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