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Journal of Cell Science, Vol 40, Issue 1 171-179, Copyright © 1979 by Company of Biologists

JOURNAL ARTICLES

Karyotype analysis of the plant-parasitic nematode Heterodera glycines by electron microscopy. 1. The diploid

P Goldstein and AC Triantaphyllou

Heterodera glycines is a diploid amphimictic nematode with n = 9 chromosomes. Nine normal synaptonemal complexes (SC) were detected following 3-dimensional reconstruction of pachytene nuclei from electron microscopy of serial sections. Regions of unique 'modified synaptonemal complexes' (MSC) were observed along 2 SCs. These consist of a heterochromatic knob within which the SC appears either disorganized or stacked in layers of lateral elements. Its function is not known. Recombination nodules and 'cylindrical granular complexes', were not observed in H. glycines.




© The Company of Biologists Ltd 1979