An Interchange in Maize Giving Low Sterility and Chain Configurations

The culture of maize which gave semisterile-1 plants (Brink, 1927) contained also two plants with a low percentage of polleu abortion (10-18 per cent based on counts made at that time). This culture had not been x-rayed. Low steriles appeared in the first generation crosses obtained from one of these plants. Pollen counts show them to be about 25 per cent sterile. Thirty-seven plants were counted, giving a total of 58,000 pollen grains, of which 26.3 per cent were practically devoid of starch.