Abstract
THE haploid chromosome number of Encephalartos barteri, observed at the first division of the microspore nucleus, is 9. The chromosomes are large; the largest is about 20µ long, the smallest about 10µ long. One of the longest chromosomes has a trabant (Fig. 1). The haploid number of 9 chromosomes has already been found in the six other species of the same genus which have been examined, and in species of Zamia, Bowenia, Dioon and Macrozamia 1.
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References
Darlington, C. D., and Wylie, A. P., “Chromosome Atlas of Flowering Plants” (London, 1955).
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BERRIE, G. Mitosis in the Microspore of Encephalartos barteri Carruth.. Nature 183, 834–835 (1959). https://doi.org/10.1038/183834a0
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DOI: https://doi.org/10.1038/183834a0
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