Cytogenetic studies on the origin of Allium wakegi Araki. II. Fertility and meiotic behavior of the tetraploid A. wakegi and the amphidiploid hybrid between A. ascalonicum L. and A. fistulosum L
Agricultural Bulletin of Saga University 50: 85-95
A local variety of the tetraploid A. wakegi and the natural amphidiploid hybrid between A. ascalonicum (from Thailand) and A. fistulosum 'Kujyo' were studied. A. wakegi was completely pollen sterile and had a seed set of <3%, while the hybrid was pollen fertile with 17.8-55.5% seed set. However, in both plants, >90% of PMCs examined had 16 bivalent chromosomes with normal pairing.