Abnormal spindle orientation during microsporogenesis in an interspecific Brachiaria (Gramineae) hybrid

18Citations
Citations of this article
22Readers
Mendeley users who have this article in their library.

Abstract

This paper reports a case of abnormal spindle orientation during microsporogenesis in an interspecific hybrid of the tropical grass Brachiaria. In the affected plant, prophase I was normal. In metaphase I, bivalents were regularly co-oriented but distantly positioned and spread over the equatorial plate. In anaphase I, chromosomes failed to converge into focused poles due to parallel spindle fibers. As a consequence, in telophase I, an elongated nucleus or several micronuclei were observed in each pole. In the second division, the behavior was the same, leading to polyads with several micronuclei. A total of 40% of meiotic products were affected. The use of this hybrid in production systems needing good-quality seeds is discussed. Copyright by the Brazilian Society of Genetics.

Cite

CITATION STYLE

APA

Mendes-Bonato, A. B., Pagliarini, M. S., & do Valle, C. B. (2006). Abnormal spindle orientation during microsporogenesis in an interspecific Brachiaria (Gramineae) hybrid. Genetics and Molecular Biology, 29(1), 122–125. https://doi.org/10.1590/S1415-47572006000100023

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free