Morphological peculiarities of pollen and violation of meiosis of soybean autotetraploid

Palinomophological research of heteromorphous pollen of tetraploid soybean showed the presence of 6 morphological species of pollen grains. Pollen grains identical virtually in number of micropores and linear dimension to haploid pollen grains of diploid form were revealed in heteromorphous pollen. It was supposed that these grains may be regarded as reversible-haploid grains, providing the reversion of tetraploid to initial diploid level. Meiosis 6 generation of tetraploid soybean were different violations with formation of uni-, di-, tri- and tetravalents, but the portion of polivalents was insignificant.