, Volume 31, Issue 2, pp 241–254 | Cite as

Nuclear genetic activity in B-chromosome rye, in terms of the quantitative interrelationships between nuclear protein, nuclear RNA and histone

  • David Kirk
  • R. Neil Jones


The nuclear basis of B-chromosome genetic activity in rye has been investigated using quantitative cytochemical techniques on isolated root tip nuclei. Nuclear DNA amount was found to be directly proportional to B-chromosome number. Relative amounts of total nuclear protein and nuclear RNA however, decreased with increasing numbers of B's but not in a strictly linear fashion. The values were disproportionately low for odd numbered B-classes of plants. Histone protein was found to increase as the number of B's went up, and in this case the values were disproportionately high for odd numbered B-classes. A negative correlation was found between histone and total nuclear protein and histone and nuclear RNA amounts.


Negative Correlation Developmental Biology Nuclear Protein Linear Fashion Histone Protein 
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Copyright information

© Springer-Verlag 1970

Authors and Affiliations

  • David Kirk
    • 1
    • 2
  • R. Neil Jones
    • 1
    • 2
  1. 1.Sub-Department of GeneticsQueen's UniversityBelfast
  2. 2.Department of Agricultural BotanyUniversity College of WalesAberystwythWales UK

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