Presented herein are methods for creating a desired genetic variant at a high efficiency from a seed. In one aspect, a method for creating a desired genetic variant at a high efficiency from a seed is presented. The method involves subjecting isolated pollen to a chemical mutagen to produce a first generation seed, planting the first generation seed in (n) plots to produce first generation plants, recovering mutagenized pollen from the first generation plants, pollinating a female parent with the recovered mutagenized pollen to produce a next generation seed, subjecting pollen from the next generation seed to mutagenesis to pollinate the first generation plant, resulting in a new next generation seed, planting the new next generation seed to produce a new next generation plant, and subjecting pollen from the new next generation plant to mutagenesis to pollinate the new next generation plant.