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CYTOLOGY OF SOME WESTERN CANADIAN ALLIUM SPECIES
Author(s) -
Chinnappa C. C.,
Basappa G. P.
Publication year - 1986
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.1537-2197.1986.tb12072.x
Subject(s) - biology , ploidy , meiosis , allium , cytology , botany , metaphase , liliaceae , zoology , chromosome , genetics , gene
Cytology of four species of Allium from western Canada was studied. Three species viz: A. acuminatum 2 n = 14, A. cernuum 2 n = 14, and A. schoenoprasum 2 n = 16 were found to be diploids with normal meiosis. Some populations of A. cernuum and A. schoenoprasum contained a high number of B‐chromosomes. Diploid (2 n = 14) and tetraploid (2 n = 28) populations were encountered in A. textile. While the diploid meiosis was regular, the tetraploids showed 1–5 quadrivalents at metaphase I, suggesting their possible autoploid origin.