Abstract
A cytological examination of 96 microspore-derived barley [Hordeum vulgare L.] genotypes indicated that haploid and diploid progeny were produced in approximately equal proportions. In order to discriminate between haploid and nonhaploid derivatives, indirect ploidy evaluation techniques were examined. Stomatal guard cell length provided a convenient and reliable method for classifying microspore-derived plants into haploid, diploid, and tetraploid groups.