1980 Volume 45 Issue 1-2 Pages 271-279
Two tetraploid (2n=44) cultivars of Gloriosa (clone Nos. 73 and 6) have been discovered showing an extremely interesting and unusual course of meiotic behaviour during metaphase I. An analysis, however, indicated that 92.72 per cent pollen mother cells possessed one nucleus 4.15 per cent contained from 2 to 7 nuclei and remaining 2.05 per cent cells, were enucleate.
The majority of the cells while uninucleate, had variable chromosomes number ranging from one fragment of a chromosome to full complement of n=22 or even upto 2n=48 chromosomes. Furthermore, nearly 48.6 percent PMC, both uninucleate and polynucleate has non-synchronisation in their chromosomes and/or nuclear developments. In the present work, the situations and possible reasons leading to such abnormalities were worked out and discussed.