The Genomic Quality of Rye B Chromosomes
- 1 June 1975
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Experimental Botany
- Vol. 26 (3) , 367-378
- https://doi.org/10.1093/jxb/26.3.367
Abstract
DNA preparations from rye plants containing 0 and 6B chromosomes were very similar when assessed by analytical ultraoentrifugation, renaturation kinetics and thermal denaturation. There was a suggestion that B chromosome DNA was slightly richer in sequences of high cytosine and guanine content than that of the A complement. In situ hybridization showed that the DNA of the rye B chromosomes was not all highly repetitious. The DNA of these B chromosomes is therefore concluded to be representative of a broad spectrum of DNA similar to the normal genome from which it was presumably derived.Keywords
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