Zea mays ssp. Extended Description Mitotic divisions of ig1 embryo sacs are asynchronous and the total number of cells and nuclei produced is variable. Embryological consequences include twinning, heterofertilization, and the production of miniature and abortive kernels due to elevation of endosperm ploidy level.
Haploids are common, many of which are paternal.
Homozygous plants are male sterile in some backgrounds. Classification very good for miniature abortive kernels. When doubled, such haploids are direct conversions from the inbred line into the C, S, or T version. References Contents Reference Evans, MM and Kermicle, JL. 1999. Maize Genetics Conference Abstracts 41 Lin, B. 1975.