A Cytogenetic Study on the F<sub>1</sub> Hybrid of <i>Chrysanthemum makinoi</i>×<i>Ch. vulgare</i>

Abstract

1. An F1 hybrid (2n=18), Chrysanthemum makinoi (2n=18)×Ch. vulgare (2n=18), was reported.2. At meiosis in the F1 hybrid 18 univalents or one bivalent and 16 univalents were formed at both diakinesis and metaphase I.3. The chromosomes of the bivalent were determined to be the longest chromosomes of the parental species.