Homoeologous pairing in hybrids of triticum turgidum durum cultivars x triticum aestivum l. cultivar chinese spring

Perera, E.

Euphytica 40(3): 259-264

1989


ISSN/ISBN: 0014-2336
DOI: 10.1007/bf00024521
Accession: 007405431

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Abstract
The meiotic behavior of 22 Triticum turgidum durum .times. Triticum aestivum L. cv. Chinese Spring (2n = 35 chromosomes, AABBD genomes) F1 hybrids has been analyzed and compared with that of the same cultivars hybridized with T. turgidum durum cv. Senatore Capelli. The multivalent associations observed in the hybrids may be attributed to a large extent to homoeologous pairing. Our study shows that not all the chromosomes of the D genome have the same affinity with their homoeologues of the A or B genomes. We have also concluded that there is no correlation between the percentage of the cells with multivalent associations and the mean of chiasmata per cell (attached arm).

Homoeologous pairing in hybrids of triticum turgidum durum cultivars x triticum aestivum l. cultivar chinese spring