Summary
Cytological and inheritance studies were carried out on a desynaptic clone of Phleum nodosum L. (2n=14). The clone was completely male sterile in addition to showing a ‘medium strong’ degree of desynapsis. Meiotic configurations and the frequencies of various abnormalities were recorded. A significant variation in the number of bivalents at metaphase I was attributed, at least in part, to environmental factors. Cytological study of the bivalents at metaphase I in the progeny from three crosses onto the desynaptic clone revealed a close fit to a 1:1 segregation for desynaptic versus non-desynaptic plants, indicating inheritance may be controlled by a single dominant gene. The absence of male fertility in non-desynaptic plants and the observation in anther cross-sections of delayed tapetal degeneration indicated that a male sterility mechanism was also likely present in this clone.
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May, K.W., Kasha, K.J. The cytological expression and inheritance of desynapsis in a clone of diploid timothy (Phleum nodosum L.). Euphytica 29, 233–240 (1980). https://doi.org/10.1007/BF00025120
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DOI: https://doi.org/10.1007/BF00025120