Abstract
Barnes and Newton1 described tumours in alfalfa caused by a leaf-hopper. They concluded that these were induced by a substance in the insect's saliva, “probably some growth regulator rather than a virus”, and that individual plants vary in their sensitivity to this substance. Examinations of the balsam woolly aphid, Adelges piceae (Ratz.), have led to similar conclusions2.
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References
Barnes, D. K., and Newton, R. C., Nature, 199, 95 (1963).
Balch, R. E., Publ., 867, Science Service, Canada Dept. Agric. (1952).
Butler, E. J., Ann. App. Biol., 17, 175 (1930).
Steward, F. C., Sci. Amer., 209, 104 (1963).
Clark, J., and Bonga, J. M., Canad. J. Bot., 41, 165 (1963).
de Torok, D., and Thimann, K. V., Physiol. Plant, 14, 543 (1961).
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BALCH, R., CLARK, J. & BONGA, J. Hormonal Action in Production of Tumours and Compression Wood by an Aphid. Nature 202, 721–722 (1964). https://doi.org/10.1038/202721a0
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DOI: https://doi.org/10.1038/202721a0
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