Oogenesis and the Chromosomes of the Cystoid Nematode, Meloidodera floridensis

Authors

  • A. C. Triantaphyllou

Abstract

Three Meloidodera floridensis populations of different geographic or host origin all reproduced by mitotic parthenogenesis. One of them from pine had a somatic chromosome number of 26, whereas, another population from pine and one from azalea had 2n = 27 chromosomes. All are considered to be triploid forms derived from an amphimictic ancestor with n = 9 chromosomes, the basic number in the closely related genus Heterodera. Evidence is presented which suggests that during division the chromosomes of the germ-line cells of the developing embryo behave differently than the chromosomes of all other blastomeres. Key Words: Reproduction, Cytology, Germ-line cells.

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Published

1971-04-15

Issue

Vol. 3, No. 2 (April 1971)

Section

Articles

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