If you wanna induce a hermie you wanna stress that plant out. Messing with the photocycle will for sure induce a hermie or look into colloidal silver. If you take a strong pheno and induce stress to cause her to hermie you should pass on 100% female genotype but it takes a lot of breeding of a certain strain to know if the genes are strong. You dont want a plant with natural hermie characteristic because then all the off spring will be prone to hermie under normal ideal conditions. The whole point of inducing stress on a strong pheno is to provoke a hermie. You dont want a natural hermie genotype passed on to all the off spring.