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“MULTIPLE SPINDLE”—A MEIOTIC IRREGULARITY IN CLARKIA EXILIS
Author(s) -
Vasek Frank C.
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.tb14977.x
Subject(s) - biology , meiosis , telophase , microspore , population , pollen , metaphase , ploidy , hybrid , botany , genetics , prophase , gene , stamen , chromosome , demography , sociology
V asek , F. C. (U. California, Riverside.) “Multiple spindle”—a meiotic irregularity in Clarkia exilis. Amer. Jour. Bot. 49(5): 536–539. Illus. 1962.—“Multiple spindle” is a meiotic irregularity in which more than one spindle occurs in a high proportion of first‐metaphase cells. Abnormal telophase segregations, the occurrence of micronuclei with the microspore nuclei, and reduced pollen fertility are further manifestations of this irregularity. Reciprocal hybrids between normal and multiple spindle are normal. Segregation data from F 2 and F 3 progenies indicate that multiple spindle is inherited as a single recessive gene, m. The mm genotype has persisted at a high frequency (about 15%) for at least 7 years in the natural population from which cultures were derived.