Notes on the cytogenetic structure of the cultivated oat Avena sativa (2n=6x=42) (original) (raw)

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Summary

The cytogenetic structure of the cultivated oat has been studied using aneuploids. The chromosome pairing observed in pentaploid hybrids between the tetraploid species A. magna and telocentric lines of A. sativa show that the occurrence of multivalents in the hybrid are in part due to chromosomal differentiation.

Nullisomic tetrasomic compensation studies indicate homoelogous relationships of the constituent genomes of A. sativa. This is also apparent in attempts to substitute different chromosomes of A. sativa with a chromosome of the tetraploid species A. barbata.

The meiotic behaviour of a haploid plant of A. sativa shows that the diploid-like pairing observed in the hexaploids is under genetic control.

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Author notes

1. I. M. Bhatti
   Present address: Rice Research Institute, Dorki, Pakistan

Authors and Affiliations

1. Welsh Plant Breeding Station, Aberystwyth, Wales, UK
   Hugh Thomas & I. M. Bhatti

Authors

1. Hugh Thomas
2. I. M. Bhatti

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Thomas, H., Bhatti, I.M. Notes on the cytogenetic structure of the cultivated oat Avena sativa (2n=6x=42).Euphytica 24, 149–157 (1975). https://doi.org/10.1007/BF00147179

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• Received: 22 March 1974
• Issue date: February 1975
• DOI: https://doi.org/10.1007/BF00147179

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