ISHS Acta Horticulturae 836: XXIII International Eucarpia Symposium, Section Ornamentals: Colourful Breeding and Genetics
BREEDING THE TOMATO MICRO-TOM MODEL SYSTEM FOR ORNAMENTAL VALUE |
| Authors: | T.B. Farinha, A. Zsögön, L.E.P. Peres |
| Keywords: | Lycopersicon, Solanum, mutants, fruit color, fruit shape |
| DOI: | 10.17660/ActaHortic.2009.836.30 |
| Abstract:
Taking advantage of its small size (8 cm tall) and short life cycle (70 days), the ornamental tomato cv. Micro-Tom (MT) was proposed as a model system for tomato genetics. Ever since, MT has been used for large scale mutagenesis and the introgression of allelic variation already known in other cultivars and tomato wild species. Such new genotypes could also be used to improve its value as an ornamental. Here we report the introgression, through successive backcrosses, of various mutations affecting fruit color and morphology into the MT background. Various true type genotypes combining reduced plant size and fruit color variation were obtained upon introgression of the mutations Del, old gold (og), Beta (B), green stripe (gs), pink fruit (y), yellow flesh (r), tangerine (t), apricot (at) and green flesh (gf). Four mutations affecting fruit format, i.e. ovate (o), fasciated (f), sun and fs8.1, were also introgressed into MT. These mutations and the combination of them greatly extends the value of MT as an ornamental and introduces the possibility of exploring the large diversity of induced and natural mutations in tomato for this purpose. | |
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