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STUDIES IN FESTUCA
Author(s) -
BORRILL MARTIN
Publication year - 1972
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1972.tb01953.x
Subject(s) - biology , botany , festuca , ploidy , taxon , festuca arundinacea , hybrid , interspecific hybridization , poaceae , genetics , gene
S ummary The cytogeographic distribution and morphology of Festuca taxa in sections Bovinae and Scariosae has been compared with the results of experimental hybridization between them. Two groups have been established, the first is predominantly Moroccan and includes F. mairei (2 n = 28), F. arundinacea varieties atlantigena forma pseudo‐mairei (2 n = 56), letourneuxiana and cirtensis (2 n = 70). These taxa are closely related to the diploid F. scariosa endemic in the Spanish Sierra Nevada. Their distinctive morphological features are due to the inclusion of the scariosa genome. The second group, predominantly European, including F. arundinacea var. glaucescens (2 n = 28) and F. arundinacea var. genuina (2 n = 42), is similarly associated with the diploid F. pratensis. It is suggested that evolution in this species complex involved opportunities in a previous era for hybridization between tetraploid taxa now separated geographically. From such hybrids the higher polyploids can be derived.