Allozyme and morphological observations on Festuca hyperborea, compared with F. baffinensis and F. brachyphylia (Poaceae) from the Canadian Arctic

• Published in: Nordic Journal of Botany
• Main Authors: Aiken, S. G., Consaul, L. L., Spidle, A., May, B.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1994
• Subjects: Plant Science; Ecology, Evolution, Behavior and Systematics; Arctic; Canadian Arctic Archipelago; Arctic Archipelago; Festuca hyperborea
• Online Access: http://dx.doi.org/10.1111/j.1756-1051.1994.tb00580.x; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1756-1051.1994.tb00580.x; https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1756-1051.1994.tb00580.x

Phenotypic plasticity in the size of leaf cross sections and in the visibility of trichomes on the leaf abaxial surface for a plant of Festuca hyperborea grown in different microhabitats is illustrated. Isozyme analyses indicate that tetraploid F. hyperborea from the Canadian Arctic is not likely a variant of tetraploid F. baffinensis and probably not a recent ancestor of the hexaploid F. brachyphylia . Although 10 populations were collected in the Canadian Arctic Archipelago as morphologically intermediate between Festuca species, with F. hyperborea considered a possible parent, no isozyme evidence suggested that this species hybridizes with either F. baffinensis or F. brachyphylia . Within plants sampled as F. hyperborea , 12 isozymatically distinct plants and one hybrid plant between this group and F. hyperborea were found.