How does apomixis allow some grasses to produce genetically similar offspring?

In the context of the Poaceae family, apomixis is a specialized reproductive mode that allows certain grasses to produce offspring without the process of fertilization.1

In this process, the egg cell contains a full complement of genes and develops into an embryo without fusing with a sperm cell. Because this method bypasses the genetic recombination typically associated with sexual reproduction, it results in clonal reproduction, where the offspring are, for the most part, genetically identical to the parent plant.1

This mechanism provides significant evolutionary advantages for grasses, such as the ability to establish populations after long-distance dispersal and the perpetuation of successful genotypes that might otherwise be disrupted by cross-pollination. Approximately 35 grass genera, including species of Poa (bluegrass) and Sorghum, utilize this reproductive strategy. Many of these apomictic grasses also retain the capacity for sexual reproduction, allowing for a flexible reproductive pattern.1