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FURTHER STUDIES IN THE GENUS DRYOPTERIS: THE ORIGIN OF D. CLINTONIANA, D. CELSA AND RELATED TAXA
Author(s) -
Walker S.
Publication year - 1962
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1962.tb14971.x
Subject(s) - dryopteris , biology , taxon , hybrid , genus , backcrossing , botany , zoology , fern , genetics , gene
W alker , S. (Liverpool Univ., England.) Further studies in the genus Dryopteris: the origin of D. clintoniana, D. celsa and related taxa. Amer. Jour. Bot. 49(5): 497–503. Illus. 1962.—Cytogenetic studies of 5 Dryopteris species, from North America, together with wild and synthesized hybrids between some of them, show that D. clintoniana and D. celsa are allohexaploid and allotetraploid respectively. Cytological and morphological evidence points to D. cristata and D. goldiana being parental to D. clintoniana , whilst D. goldiana and D. ludoviciana are parental to D. celsa. The taxon D. X australis is triploid and has been synthesized; it is the backcross between D. celsa and D. ludoviciana.

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