Grass inflorescence mutations and their role in speciation

  • Romuald Kosina Plant Speciation Group, Institute of Environmental Biology, University of Wroclaw, Przybyszewskiego 63-77, 51-148 Wroclaw, Poland

Abstract

Several examples of natural mutants in the grass family were presented. All appeared as changes in inflorescence structure. In mutated plants chasmogamy was restricted due to anomalous lodicules or compactness of ears. A rare glumeless mutation in Agropyron pectiniforme reduced the level of assimilation in the ear. All mutations appear as unfavorable in natural populations.

References

Ceynowa-Giełdon M. 1997. Interesting lemmas in Festuca polesica fo. anomala (Poaceae). Fragm. Flor. Geobot. 42: 233–237.
Derbyshire P., Byrne M.E. 2013. MORE SPIKELETS1 is required for spikelet fate in the inflorescence of Brachypodium. Plant Physiol. 161: 1291–1302.
Gottschalk W. 1979. Aspects of mutation genetics. Egypt. J. Genet. Cytol. Suppl. 8: 1–87.
Grant V. 1981. Plant speciation. Columbia University Press, New York.
Kosina R. 1998. O zmienności anomalnej traw. III Ogólnopolskie Spotkanie „Taksonomia, kariologia i rozmieszczenie traw w Polsce”, Kraków: 8.
Kosina R. 2007. Some topics on the grass mosaics. In: Frey L. (ed.), Biological issues in grasses: 159–167. W. Szafer Institute of Botany, Polish Academy of Sciences, Kraków.
Kosina R., M. Florek M., Tomaszewska P. 2012. Lodicule variability in a spiro-distichous spike of Lophopyrum elongatum. Ann. Wheat Newslet. 58: 201.
Kosina R., Tomaszewska P. 2012. On breeding system in wheat and Brachypodium distachyon. Ann. Wheat Newslet. 58: 194–195.
Nielsen E.L., Nath J. 1961. Somatic instability in derivatives from Agroelymus turneri resembling Agropyron repens. Am. J. Bot. 48: 345–349.
Stebbins G.L., Yagil E. 1966. The morphogenetic effects of the hooded gene in barley. I. The course of development in hooded and awned genotypes. Genetics 54: 727–741.
Fig. 1. Examples of grass mutants: A – a hooded barley; B – a spiro-distichous form of Lophopyrum elongatum; C – Lolium perenne with compact ears; D – a glumeless and compact form of Agropyron pectiniforme.
Published
2015-05-20
How to Cite
KOSINA, Romuald. Grass inflorescence mutations and their role in speciation. Modern Phytomorphology, [S.l.], v. 8, p. 7-9, may 2015. ISSN 2227-9555. Available at: <http://ojs.phytomorphology.org/index.php/MP/article/view/46>. Date accessed: 11 apr. 2018. doi: https://doi.org/10.5281/zenodo.159819.
Section
Correspondences

Most read articles by the same author(s)