Abstract

FLORES-HERNANDEZ, Luis Antonio et al. Genetic diversity within wild species of Solanum. Rev. Chapingo Ser.Hortic [online]. 2018, vol.24, n.2, pp.85-96. ISSN 2007-4034.  https://doi.org/10.5154/r.rchsh.2017.08.030.

Cultivated tomato (Solanum lycopersicum L.) has undergone a reduction in its genetic base as a result of the processes of modern domestication and breeding, which has been extensively documented by molecular markers in different genotypes, both nationally and internationally. Faced with this situation, some plant breeders in Mexico have proposed making use of native Mexican germplasm, as well as of the genetic variation present in wild species related to the cultivated tomato. The aim of this study was to characterize agronomically, under greenhouse conditions, accessions of five wild relatives of the cultivated tomato for their incorporation into breeding programs of this vegetable. In addition, it is expected to reduce its vulnerability to climate change and adverse biotic and abiotic factors. The species described were Solanum pennellii L., Solanum pimpinellifollium L., Solanum peruvianum L., Solanum chilense R. and Solanum habrochaites S. The accessions were evaluated under greenhouse conditions under a completely randomized experimental design with four replications. Twelve traits of agronomic interest were evaluated to describe the variation between the accessions of each one of the evaluated species, which were studied by analysis of variance and comparison of means. The results showed high significance among the accessions of each one of the evaluated species for all the traits. The above shows that there is a high potential in each of the accessions of the species studied to exploit them genetically in the improvement of the cultivated tomato.

Keywords : Solanum pennellii L.; Solanum pimpinellifollium L.; Solanum peruvianum L.; Solanum chilense R.; Solanum habrochaites S.

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