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An accession of A. roylei Stearn, a diploid species with 2n=16, growing in Northwest Himalayas, was studied for reduction division in male track. Multivalent associations involving 3 to 16 chromosomes were observed in cells at diplotene and metaphase-I. Although anaphasic segregations were mostly normal, the pollen stainability was very low. Propagation by bulbs ensures the survival and maintenance of such a complex heterozygosity in this species.

Cytology of Allium roylei Stearn. I. Meiosis in a Population with Complex Interchanges