Plant Systematics and Evolution

, Volume 123, Issue 1, pp 61–82 | Cite as

Karyosystematik einiger asiatischerOnosma-Arten (Boraginaceae), inkl.O. inexspectatumTeppner, spec. nov.

  • Herwig Teppner
Article

Karyosystematics of some asiaticOnosma species (Boraginaceae), incl.O. inexspectatumTeppner, spec. nov.

Abstract

The karyology of 7Onosma species is treated. Informations on the structure of the interphase nuclei and of the chromosomes in mitotic prophase, on chromosome numbers and on chromosome morphology are given; in some cases earlier chromosome counts are corrected. The chromosome numbers ofO. inexspectatumTeppner, spec. nov. (2n = 14),O. rascheyanumBoiss. (2n = 30),O. sanguinolentumVatke (2n = 30),O. albo-roseumFisch. etC. A. Mey. (2n = 44) andO. giganteumLam. (2n = 16) are reported for the first time. The earlier known number of 43 chromosomes inO. albo-roseum, found in most individuals from garden origin, is interpreted as monosomic (2n − 1 = 43). About 50% of the pollen grains contains the monosome, but this is eliminated at least in most cases in the EMCs.

Key words

Boraginaceae Onosma spec. div. O. inexspectatum spec. nov. Karyosystematics cytosystematics karyotypes heterochromatin aneuploidy monosomics polyploidy Pollen tetrads Flora of SW-Asia 

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Copyright information

© Springer-Verlag 1974

Authors and Affiliations

  • Herwig Teppner
    • 1
  1. 1.Institut für Systematische BotanikUniversität GrazGrazÖsterreich

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