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Genetic mapping of a dwarfing gene found inSolanum phureja clone 1.22

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Abstract

Dwarf plants were obtained in an F2 population of a cross betweenSolanum chacoense (clone chc 525-3) andS. phureja (clone 1.22). Segregation analyses in F2 and backcross populations suggested that the dwarfism was controlled by a single recessive gene transmitted fromS. phureja clone 1.22. The dwarf plants responded to treatment with gibberellic acid, which recovered normal growth. We named this gene‘ga 2’. Linkage analysis of the genega 2 with RFLP and RAPD markers indicated that the genega 2 was located on the most or near distal end of chromosome 7.

Resumen

Del cruce entreSolanum chacoense (clon 525-3) yS. phureja (clon 1.22) en una población F2 se obtuvieron plantas enanas. Los análisis de segregación en F2 y las poblaciones en retrocruza sugirieron que el enanismo estuvo controlado por un solo gen recesivo trasmitido del clon 1.22 deS. phureja. Las plantas enanas respondieron al tratamiendo con ácido giberélico después de lo cual recuperaron su crecimiento normal. A este gen lo hemos denominado “ga2”. Los análisis de enlace del genga 2 realizados con marcadores de RFLP y RAPD indicaron que el genga 2 estaba localizado en la parte más extrema del cromosoma 7 o cerca de su extremo distal.

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  1. Experimental Farm, Kobe University, 1348 Uzurano, Kasai, 675-2103, Hyogo, Japan

    Takafumi Kimura & Kazuyoshi Hosaka

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  1. Takafumi Kimura
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  2. Kazuyoshi Hosaka
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Correspondence to Kazuyoshi Hosaka.

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Kimura, T., Hosaka, K. Genetic mapping of a dwarfing gene found inSolanum phureja clone 1.22. Am. J. Pot Res 79, 201–204 (2002). https://doi.org/10.1007/BF02871935

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  • DOI: https://doi.org/10.1007/BF02871935

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