Investigation of apomictic maize-Tripsacum hybrids

Sokolov, V.A.; Kindiger, B.; Khatypova, I.V.

Genetika 34(4): 492-498


ISSN/ISBN: 0016-6758
Accession: 003182809

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Cytogenetic, biochemical, and molecular (at the DNA level) investigation of 38-chromosomal maize-Tripsacum hybrids, which were continuously reproduced by apomixis for more than 20 generations, as conducted. The hybrids contained 20 maize and 18 Tripsacum chromosomes. Meiotic or other events resulting in polymorphism of PCR spectra were shown to occur with low frequencies. The results were explained with the knowledge that the genes of apomictic development are unique. These genes are contributed by the male parent and are consistently expressed in alien cytoplasm in the presence of two maize genomes.