Genetic model for the inheritance of the parthenocarpy in the tomato line '75/59'
[EN] A genetic model for the parthenocarpy in the strain 75/79 was proposed in 1986 by Nuez et al. This parthenocarpic strain was developed at the Max-Planck Institut by Reimann-Philipp. In agreement with this model, 75/79 would be homozygous for the genes pat-3 and pat-4 wich are partially recessiv...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1988 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/12882 |
| Acceso en línea: | http://hdl.handle.net/10261/12882 |
| Access Level: | acceso abierto |
| Palabra clave: | Parthenocarpy Fruit set Tomato |
| Sumario: | [EN] A genetic model for the parthenocarpy in the strain 75/79 was proposed in 1986 by Nuez et al. This parthenocarpic strain was developed at the Max-Planck Institut by Reimann-Philipp. In agreement with this model, 75/79 would be homozygous for the genes pat-3 and pat-4 wich are partially recessive and with independent segregation. In the agroclimatic conditions of the Spanish south-east, the genotypes pat-3 pat-3 + pat-4 and + pat-3 pat-4 pat-4 would be parthenocarpic as well. The expression of the parthenocarpy seems to be influenced by the environmental factors, and for this reason two new experiments have been made during the 1986 and 1987 seasons. Some problems of characterization have been reported when studying the progenies from crosses between the small fruited strain 75/59 and big fruited varieties. Problems arise from the interference between the fruit varieties. Problems arise from the interference between the fruit weight inheritance and parthenocarpic trait, leading to a difficulty in the distinction of the smaller parthenocarpic fruits of 75/79 from those pseudofruits that reach a similar size. These problems have been decreased by using the tiny fruited variety MEX 118 as a non-parthenocarpic parent. Segregations obtained from crosses between 75/59 and MEX 118 in both seasons, are in agreement with those predicted by the model proposed for 75/59. |
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