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THE ANEMIA ADIANTIFOLIA COMPLEX IN JAMAICA
Author(s) -
WALKER TREVOR G.
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.tb06300.x
Subject(s) - ploidy , polyploid , meiosis , hybrid , biology , botany , genetics , evolutionary biology , zoology , gene
S ummary It has been shown that Anemia adiantifolia , which has customarily been regarded as a uniform species, forms a polyploid series in Jamaica, with diploid, triploid and tetraploid cytotypes. The tetraploid backcrosses to the diploid in the wild to give rise to sterile triploid hybrids. The latter form thirty‐eight bivalents and thirty‐eight univalents at meiosis and this, coupled with the morphological and cytological evidence, indicates that the diploid is one of the parents of the allotetraploid. Distributional studies of the forms in Jamaica from a sample of eighty‐seven plants show that the diploid is the more common form, both numerically and distributionally. Little evidence can be adduced from the morphology of the tetraploid as to its other diploid parent.