Abstract
PROF. J. B. S. HALDANE'S1 letter on Dr. Darlington's2 interesting and provocative article calls for two comments. First there is, I think, no published evidence to show that reversion from climber to bush type in roses is due to an agent transmitted from the stock (incidentally it may be noticed that Crane and Lawrence's3 account of their experiment on p. 178 of their book does not mention the type of stock on which the buds were grafted). Even assuming that the difference between the climber and bush type is due to a change in a plasmagene, the reversion of a percentage of the buds might be due to the somatic sorting out of two different types of plasmagenes such as sometimes happens with plastids.
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References
Nature, 154, 429 (1944).
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"Genetics of Garden Plants",2nd ed. (London, 1937).
J. Genet, 5, 13 (1915).
Proc. Roy. Soc., B, 91, 186 (1920).
"The Evolution of Genetic Systems" (Cambridge, 1939).
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HOWARD, H. Heredity, Development and Infection. Nature 154, 798 (1944). https://doi.org/10.1038/154798a0
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DOI: https://doi.org/10.1038/154798a0
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