Introduction of wild germplasm in modern roses

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    Introduction of germplasm from wild species is a prerequisite for the enlargement of the relatively small gene pool in roses. In the present study testcrosses between different European wild species and selected tetraploid cultivated roses were made to evaluate crossing efficiencies. Significant differences were observed among the tested combinations. Interspecific crosses frequently generate F1 plants with odd chromosome numbers (mostly triploids). These triploids produce both monoploid and diploid pollen fractions. Pollen sorting could increase the percentage of diploid pollen before it is used for pollination. To evaluate the genetic transfer between wild and cultivated roses a protocol for making DNA microsatellites profiles of a single pollen was developed.
    Original languageEnglish
    Title of host publicationProceedings of the IVth International Symposium on Rose Research and Cultivation
    EditorsHB Pemberton
    Publication date2007
    ISBN (Print)978-90-6605-560-5
    Publication statusPublished - 2007
    Event4th International Symposium on Rose Research and Cultivation - Santa Barbara, United States
    Duration: 18-Sept-200522-Sept-2005


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