ISHS Acta Horticulturae 591: III International Symposium on Pistachios and Almonds
STUDY OF MALE-STERILITY TRANSMISSION IN 'ROF' ALMOND |
| Authors: | J.M. Alonso, R. Socias i Company |
| Keywords: | almond, male sterility, transmission, Prunus amygdalus Batsch |
| Abstract:
Almond has shown the presence of male sterility in the cultivar ‘Rof’, but no information is available on the possibility of its genetical transmission. Male sterility has been shown to be a monofactorial recessive trait, with a single Mendelian inheritance in other species of the genus Prunus such as peach and apricot. However, this is not the case in ‘Rof’ almond, as the study of several progenies derived from this cultivar has shown. If male sterility in almond had the same genetical basis as the other Prunus species, ‘Rof’ would be homozygous recessive (ms ms), its seedlings would be heterozygous (Ms ms) and the expected segregation in the F2 progenies would be 3 male fertile: 1 male sterile. The observations of several progenies derived from ‘Rof’ showed only 2 male sterile seedlings from a total of 107. As a consequence, male sterility in ‘Rof’ could be due more to a physiological disorder rather than to a genetic basis. | |
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