Phenotypic class ratios as marker signs of different types of agamospermy

This article focuses on the development of the method for the genetic classification of agamospermous reproduction types in plants using sugar beet as an example. The classification feasibility is ensured by the use of isozymes as genetic markers allowing the identification of all three phenotypic classes in the progeny of individual heterozygous diploid plant and is based on different phenotypic class ratios in the progenies obtained by meiotic and mitotic agamospermy. The data indicate that for sugar beet meiotic agamospermy is the more typical since 13 of 15 explored progenies were classified as those produced by meiotic agamospermy and only 2 as produced by mitotic agamospermy.