Publication Type

Journal Article

Journal Name

CYTOLOGIA

Publication Date

1-1-1985

Abstract

The cytology of a grass-infesting planthopper, N. bakeri, was studied. The genomic complement was normally 2n=29 in males and 2n=30 chromosomes in females. These specifically consisted of 28 autosomes (14II) and a univalent X-chromosome in males and XX bivalents in females. As attested by the orientation, broad spindle attachment, and parallel disjunction during anaphase I, N. bakeri chromosomes are holocentric or the kinetochores are located along the entire length of the chromosomes. Some karyological variations included meiocytes with less as well as more chromosomes than the normal genomic constitution. Due to these atypical karyotypes, it can be suggested that N. bakeri is chromosomally polymorphic with ample genetic versatility. © 1985, Japan Mendel Society, International Society of Cytology. All rights reserved.

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