QTL analysis of an advanced backcross of Lycopersicon peruvianum to the cultivated tomato and comparisons with QTLs found in other wild species |
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| Authors: | T. M. Fulton T. Beck-Bunn D. Emmatty Y. Eshed J. Lopez V. Petiard J. Uhlig D. Zamir S. D. Tanksley |
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| Affiliation: | (1) Department of Plant Breeding and Biometry, 252 Emerson Hall, Cornell University, Ithaca, NY 14853, USA, US;(2) Seminis Vegetable Seeds, 37437, State Highway 16, Woodland, CA 95659, USA, US;(3) Heinz USA, Box 57, Stockton, CA 95201, USA, US;(4) Hebrew University, The Faculty of Agriculture, Department of Field Crops, Kennedy Lee Building, Rm 222, Box 12, Rehovot 76-100, Israel, IL;(5) Nestle R&D Center S.A., Apartado 435, E-06080, Badajoz, Spain, ES;(6) Francereco, 101 Avenue Gustave Eiffel, 37390, Notre Dame, Tours, France, FR |
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| Abstract: | A BC3 population previously developed from a backcross of Lycopersicon peruvianum, a wild relative of tomato, into the cultivated variety L. esculentum was analyzed for QTLs. Approximately 200 BC4 families were scored for 35 traits in four locations worldwide. One hundred and sixty-six QTLs were detected for 29 of those traits. For more than half of those 29 traits at least 1 QTL was detected for which the presence of the wild allele was associated with an agronomically beneficial effect despite the inferior phenotype of the wild parent. Eight QTLs for fruit weight could be followed through the BC2, BC3, and BC4, generations, supporting the authenticity of these QTLs. Comparisons were made between the QTLs found in this study and those found in studies involving two other wild species; the results showed that while some of these QTLs can be presumed to be allelic, most of the QTLs detected in this study are ones not previously discovered. Received: 9 April 1997 / Accepted: 20 May 1997 |
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| Keywords: | Molecular markers Quantitative trait loci Molecular breeding Germplasm |
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