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Article

Evolutionary implications of permanent odd polyploidy in the stable sexual, pentaploid of Rosa canina L

In Rosa canina (2n=5x=35), the pollen and ovular parents contribute, respectively, seven and 28 chromosomes to the zygote. At meiosis I, 14 chromosomes form seven bivalents and 21 chromosomes remain as univalents...

K Y Lim, G Werlemark, R Matyasek, J B Bringloe, V Sieber, H El Mokadem… in Heredity (2005)