| Right- and left-handedness in Triticum and Aegilops.
II. C values among species of Triticum and Aegilops By H. SUEMOTO and K. KOJIMA Lab. Genet., Kyoto Univ., Kyoto Each species of Triticum and Aegilops has its own specific value of C. A certain relation between the C value and the genome constitution was found (Table 1). Genome set AA shows the highest value of C (80% or more). DD has about 65%, whereas CC, MM, CuCu and S1S1 give no indication of regularity, at least in the spike. BB and GG have no polarity, and, also, seem to suppress the effect of AA. Although the values are not highly reliable, because of the small number of samples, the hybrid (AD) between T. aegilopoides and Ae. squarrosa gives ca. 68% which is similar rather to DD than to AA. These results suggest that the polarity of the right- and left- handedness of the spikes is found only in the A- and D- genomes throughout the examined Triticum and Aegilops species and that BB and GG suppress the effect of AA. |