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CYTOTAXONOMIC STUDIES IN HOLCUS
Author(s) -
CARROLL CHRISTOPHER P.,
JONES KEITH
Publication year - 1962
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.1469-8137.1962.tb06276.x
Subject(s) - holcus lanatus , interspecific hybrids , hybrid , biology , botany , interspecific competition , chromosome , ploidy , genetics , poaceae , gene , lolium perenne
S ummary A statistical study has been made of the morphology of Holcus lanatus (2 n = 14), H. mollis (2 n = 28) and of three F 1 progenies (2 n = 21). The hybrids, while intermediate in some respects, tends to resemble the mollis parent strongly in morphology and growth form. This could be accounted for by their genomic composition. The occurrence of natural F 1 hybrids is reported, and considered in the light of the experimental results. Their importance in the evolution of the H. mollis complex is discussed. It is shown that interspecific hybrids could easily be confused with authentic H. mollis in the wild. A list of tentative diagnostic characters is given, but only chromosome counting can provide decisive identification.