A new Chinese species of Psathyrostachys (Poaceae) with notes on its karyotypes

C. Baden, I. Linde-Laursen, D.R. Dewey

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    The new species Psathyrostachys stoloniformis native to China is described. The karyotype was investigated by C‐, N‐, and Ag‐banding. The new species has 2n = 2x = 14, including 8 metacentric and 6 SAT‐chromosomes with minute satellites, distributed either on 3 or on 4 chromosome pairs. The C‐banding pattern comprises from one to six conspicuous and from zero to three very small bands per chromosome. Often two bands placed close together appear as one large band. The karyotype suggests that P. stoloniformis is closely related to P. juncea. N‐banding produced very weak or no bands. Meiotic analyses of interspecific hybrids revealed a high chiasma frequency indicating that P. stoloniformis has the same basic genome (N) as P. huashanica, and P. fragilis.
    Original languageEnglish
    JournalNordic Journal of Botany
    Volume9
    Issue number5
    Pages (from-to)449-460
    ISSN0107-055X
    DOIs
    Publication statusPublished - 1990

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