Abstract
Autotriploid plants were obtained from the selfed progeny of C2 generation autotetraploids. Chromosome associations such as IVs, IIIs, Its and Is were observed both at diakinesis and metaphase I. The occurrence of quadrivalents is presumed to be either due to a single interchange or duplication in a certain chromosome of the genome. The mean chiasma frequency in them was found to be significantly less than one and half times to that of the corresponding diploid. Meiotic irregularities such as laggards and irregular distribution at anaphase I and II were encountered. Pollen and seed fertility is very low. The probable origin of triploids from the tetraploid progeny is discussed. The present findings are compared with those reported earlier.
