Preferential Occurrence of Wheat-rye Meiotic Pairing Between Chromosomes of Homoeologous Group 1

Overview

Journal Theor Appl Genet

Publisher Springer

Specialty Genetics

Date 2013 Nov 26

PMID 24270820

Citations 4

Authors

T Naranjo

Affiliations

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Abstract

Wheat-rye homoeologous pairing in both ABRR and (0-7)A(0-7)BRR plants takes place preferentially between homoeologous chromosomes of group 1. This suggests either a much greater affinity between wheat and rye chromosomes for this group or more efficient pairing initiation because of common nucleolar organizer activities. 1A-1R associations were more frequent than 1B-1R associations though in both cases pairing was restricted mostly to the long arms. From the variation in these particular chromosome arms the three following factors might hinder the wheat-rye pairing: regular homologous pairing of rye chromosomes, presence of prominent telomeric C-bands in rye chromosomes or occurrence of wheat-wheat homoeologous pairing.

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Naranjo T, Lacadena J . C-banding pattern and meiotic pairing in five rye chromosomes of hexaploid triticale. Theor Appl Genet. 2013; 61(3):233-7. DOI: 10.1007/BF00273780. View

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