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The hybrid origin of Calamagrostis x gracilescens [Poaceae] in Poland inferred from morphology and AFLP data

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Paszko B., Nobis M.

Acta Societatis Botanicorum Poloniae

2010

tom 79

nr 1

51-61

The morphology of Calamagrostis canescens and C. stricta recorded in the Małopolska Upland (the vicinity of Zbijów Mały, ca. 10 km northeast of the town of Skarżysko-Kamienna, Central Poland) was examined due to intermediate individuals found in sympatric populations of these species. Both putative parents as well as individuals that appeared hybrid-like were found in an extensive, wet hay-meadow. Various vegetative and reproductive characteristics were studied to identify hybrids. Interestingly, Polish accessions of C. ×gracilescens exhibited some degree of morphological intermediacy but resembled C. stricta in spikelet morphology. Branching of the mid-culm, the number of nodes per culm, callus hair length and relative callus hair length are the best characters to distinguish the Polish C. ×gracilescens. AFLP analysis proved to be suitable for detecting recent hybridization events between C. canescens and C. stricta. Analysis of the Bayesian clustering analysis showed that C. ×gracilescens were subjected to gene flow from the C. canescens gene pool as well as from the C. stricta gene pool.

Ograniczanie wyników

1 Acta Societatis Botanicorum Poloniae

1 Nobis M.

1 Paszko B.

1 2010

Wyniki wyszukiwania

The hybrid origin of Calamagrostis x gracilescens [Poaceae] in Poland inferred from morphology and AFLP data