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Metaphase I bound arms frequency and genome analysis in wheat-Aegilops hybrids : 1. Ae. variabilis-wheat and Ae. kotschyi-wheat hybrids with low and high homoeologous pairing.
Theor Appl Genet. 1991 Dec; 83(2):264-72.TA

Abstract

Meiotic associations of different wheat-Aegilops variabilis and wheat-Ae. kotschyi hybrid combinations with low and high homoeologous pairing were analyzed at metaphase I. Five types of pairing involving wheat and Aegilops genomes were identified by using C-banding. A genotype that seems to promote homoeologous pairing has been found in Ae. variabilis var. cylindrostachys. Its effect is detectable in the low pairing hybrids but not in the high ones. Pairing affinity has been analyzed on the basis of metaphase I associations in the low and high homoeologous pairing hybrids, and in bivalents and multivalents in the high pairing hybrids. The results indicate that the amount of bound arms of each type of identifiable association relative to the total associations formed (relative contribution) was not maintained, either between the different levels of pairing (low and high) or between different meiotic configurations (bivalents and multivalents). These findings seem to indicate that quantifications of genomic relationships based on the amount of chromosome pairing at metaphase I must be carefully done in this type of hybrid combinations.

Authors+Show Affiliations

Genetics Unit, E.T.S.I. Agronomy, Polytechnic University of Madrid, E-28040, Madrid, Spain.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24202368

Citation

Fernández-Calvín, B, and J Orellana. "Metaphase I Bound Arms Frequency and Genome Analysis in wheat-Aegilops Hybrids : 1. Ae. Variabilis-wheat and Ae. Kotschyi-wheat Hybrids With Low and High Homoeologous Pairing." TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, vol. 83, no. 2, 1991, pp. 264-72.
Fernández-Calvín B, Orellana J. Metaphase I bound arms frequency and genome analysis in wheat-Aegilops hybrids : 1. Ae. variabilis-wheat and Ae. kotschyi-wheat hybrids with low and high homoeologous pairing. Theor Appl Genet. 1991;83(2):264-72.
Fernández-Calvín, B., & Orellana, J. (1991). Metaphase I bound arms frequency and genome analysis in wheat-Aegilops hybrids : 1. Ae. variabilis-wheat and Ae. kotschyi-wheat hybrids with low and high homoeologous pairing. TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, 83(2), 264-72. https://doi.org/10.1007/BF00226261
Fernández-Calvín B, Orellana J. Metaphase I Bound Arms Frequency and Genome Analysis in wheat-Aegilops Hybrids : 1. Ae. Variabilis-wheat and Ae. Kotschyi-wheat Hybrids With Low and High Homoeologous Pairing. Theor Appl Genet. 1991;83(2):264-72. PubMed PMID: 24202368.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Metaphase I bound arms frequency and genome analysis in wheat-Aegilops hybrids : 1. Ae. variabilis-wheat and Ae. kotschyi-wheat hybrids with low and high homoeologous pairing. AU - Fernández-Calvín,B, AU - Orellana,J, PY - 1990/10/29/received PY - 1991/03/25/accepted PY - 2013/11/9/entrez PY - 1991/12/1/pubmed PY - 1991/12/1/medline SP - 264 EP - 72 JF - TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik JO - Theor Appl Genet VL - 83 IS - 2 N2 - Meiotic associations of different wheat-Aegilops variabilis and wheat-Ae. kotschyi hybrid combinations with low and high homoeologous pairing were analyzed at metaphase I. Five types of pairing involving wheat and Aegilops genomes were identified by using C-banding. A genotype that seems to promote homoeologous pairing has been found in Ae. variabilis var. cylindrostachys. Its effect is detectable in the low pairing hybrids but not in the high ones. Pairing affinity has been analyzed on the basis of metaphase I associations in the low and high homoeologous pairing hybrids, and in bivalents and multivalents in the high pairing hybrids. The results indicate that the amount of bound arms of each type of identifiable association relative to the total associations formed (relative contribution) was not maintained, either between the different levels of pairing (low and high) or between different meiotic configurations (bivalents and multivalents). These findings seem to indicate that quantifications of genomic relationships based on the amount of chromosome pairing at metaphase I must be carefully done in this type of hybrid combinations. SN - 0040-5752 UR - https://www.unboundmedicine.com/medline/citation/24202368/Metaphase_I_bound_arms_frequency_and_genome_analysis_in_wheat_Aegilops_hybrids_:_1__Ae__variabilis_wheat_and_Ae__kotschyi_wheat_hybrids_with_low_and_high_homoeologous_pairing_ DB - PRIME DP - Unbound Medicine ER -
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