CYTOLOGIA
Online ISSN : 1348-7019
Print ISSN : 0011-4545
Primary and Secondary Chromosome Association in Euryale ferox Salisb
P. P. GuptaS. K. Roy
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1973 年 38 巻 4 号 p. 645-649

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Twenty-nine bivalents were found in the PMCs of Euryale ferox from Gorak-hpur, Eastern India. Primary and secondary association was noted at diakinesis and metaphase respectively. Secondary association at metaphase I both from equatorial and polar views showed the formation of quadrivalents, hexavalents, and octavalents in descending order of frequency. The phenomenon persisted even at metaphase II. Presence of strong secondary association in the species suggests its gametic number to have originated secondarily by means of allopoly-ploidy.

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© The Japan Mendel Society
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