Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 435494
Title Meiotic polyploidization in Darwin hybrid tulips
Author(s) Marasek Ciolakowska, A.R.; Xie, S.L.; Ramanna, M.S.; Arens, P.; Tuyl, J.M. van
Source In: Proceedings of the 24th International Eucarpia Symposium Section Ornamentals “Ornamental breeding worldwide. - ISHS - p. 187 - 192.
Event The 24th International Eucarpia Symposium Section Ornamentals “Ornamental breeding worldwide, 2012-09-02/2012-09-05
Department(s) WUR Plant Breeding
Laboratory of Plant Breeding
Publication type Contribution in proceedings
Publication year 2012
Abstract In our study, 2n gamete producing F1 hybrids of Darwin hybrids (T. gesneriana × T. fosteriana) have been selected and used as pollen donor with the aim of producing of polyploid tulips. In total, 308 one-year-old BC1 seedlings resulting from crosses between diploid and triploid T. gesneriana cultivars and diploid 2n gametes producers have been tested by flow cytometry analysis. Complementary, chromosome number and genome composition was evaluated for selected genotypes through genomic in situ hybridization (GISH) analysis. The progenies from crosses at diploid level (2x × 2x) were mostly diploids, whereas a few seedlings were triploids. In crosses 3x × 2x, 81 genotypes were tetraploids and 25 seedlings were pentaploids. Cytological analyses using GISH of the sexual polyploid progenies have shown considerable amounts of intergenomic recombination in the BC1 generations which is desirable for introgression breeding.
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