ANALYSIS OF MEIOTIC PAIRING IN HYBRIDS OF COMMON WHEAT WITH THREE ALIEN SPECIES

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Published: Feb 25, 1992
DOI: https://doi.org/.
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Keywords:
Relative affinity, meiotic analysis, Aegilops mutica, Ae. variabilis, Thinopyrum bessarabicum.

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S. M. S. TOMAR
Division of Genetics, Biotechnology Centre, Indian Agricultural Research Institute, New Delhi 110012
ALICE K. VARI
Division of Genetics, Biotechnology Centre, Indian Agricultural Research Institute, New Delhi 110012

Abstract

Meiotic analysis based on mathematical models was carried out to investigate genomic relationships in some tetraploid and pentaploid wheat Fl hybrids. High optimized value of x (relative affinity) and observed value of c (chromosome arm pairing frequency) below 0.5 in the tetraploid hybrids of Triticum aestivum (2n=42) with Aegilops mutica (2n=14) and Thinopyrum bessarabicum (2n=14) indicated that there were no chromosomal homologies between the genomes of T. aestivum and Ae. mutica and between those of T. aestivum and Th. bessarabicum. The study also revealed that there are no homologous genomes present between T. aestivum and the tetraploid Aegilops variabilis (2n=28).

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How to Cite
TOMAR, S. M. S., & VARI, A. K. (1992). ANALYSIS OF MEIOTIC PAIRING IN HYBRIDS OF COMMON WHEAT WITH THREE ALIEN SPECIES. INDIAN JOURNAL OF GENETICS AND PLANT BREEDING, 52(01), 11–16. https://doi.org/.
Issue
Vol. 52 No. 01 (1992): Indian Journal of Genetics and Plant Breeding
Section
Research Article
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