Microgametophytic plastid nucleoid content and reproductive and life history traits of tribe Trifolieae (Fabaceae)

R. N. Keys, S. E. Smith, H. Lloyd Mogensen, E. Small

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Microgametophytic plastid nucleoids were quantified for 18 species representing the four core genera of the tribe Trifolieae (Fabaceae), Medicago, Melilotus, Trigonella, and Trifolium. Generative cells of all taxa contained nucleoids, establishing that biparental plastid inheritance is common in the Trifolieae. Nucleoid number and volumes of pollen grains and generative cell nuclei differed among taxa. Nucleoid number was positively correlated with pollen grain and generative cell nuclear volumes, flower size and style length. These relationships disappeared after adjusting nucleoid number for pollen grain and generative cell nuclear volumes. Adjusted nucleoid numbers provided no evidence to support hypotheses that plastid content is associated with ploidy level, mating system, perenniality or size of the reproductive apparatus.

Original languageEnglish (US)
Pages (from-to)89-98
Number of pages10
JournalPlant Systematics and Evolution
Volume196
Issue number1-2
DOIs
StatePublished - Mar 1995

Keywords

  • DAPI
  • Leguminosae
  • Medicago
  • Microgametophyte
  • alfalfa
  • biparental inheritance

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Plant Science

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