Summary
The hybrid orchid clones of Aranda ‘Christine’ show differential meiotic behaviour with respect to meiotic irregularities in the form of non-congressing chromosomes, laggards and complement fractionation. These irregularities occur in significantly variable but high frequencies, which results in the observed sterility of these hybrids. The observed differential meiotic behaviour is probably due to the transmission of a variable set of chromosomes from the third generation hybrid parent, Vanda ‘Hilo Blue’. Deviant spores, mainly polysporous and polyploid, are the end products of the meiotic aberrations. Such spores appear to be produced regularly in the intergeneric orchid hybrids.
Meiosis in one of the Aranda ‘Christine’ clones, C80, was found to be highly aberrant and could be unique among orchid hybrids.
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Teoh, S.B., Ong, E.C. Differential meiotic behaviour in hybrid clones of Aranda ‘Christine’ (Orchidaceae). Euphytica 32, 799–806 (1983). https://doi.org/10.1007/BF00042161
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DOI: https://doi.org/10.1007/BF00042161