MEIOSIS IN 8-CHROMOSOME BARLEY HAPLOIDS

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Abstract
Meiosis was studied in 4 8-chromosome haploid plants produced from ''Wiebe''s'' barley (2n = 14 + 2 centric fragments) (Hordeum vulgare L.) in which the extra chromosome lost its telomeres and was 1/3 the length of a normal chromosome. Although secondary associations occurred, pairing between the normal and fragmented chromosome was rare despite the presence of homologous segments between them, indicating that the deletion of the telomeres restricted chromosome synapsis. A high bivalent frequency was attributed to a translocation between a long and short chromosome of the normal complement that persisted through the haploidization process.