Patent ID: 6066785
Filing Date: 2000-05-23
Classification: A01H

Abstract:
A method for producing hybrid seeds comprising:(a) providing a fertility-selective growth medium having a deficiency for a micronutrient, wherein the micronutrient is boron;(b) selecting from a plant species that is normally self-pollinating parents having different genotypes consisting of a female plant and a male plant, the plant being wheat,(i) the female plant having a phenotype of female fertility tolerance and male fertility sensitivity to the micronutrient deficiency, such that the plant does not produce normal pollen but has female fertility; and(ii) the male plant having a phenotype of male fertility tolerance to the micronutrient deficiency, and producing normal pollen;(c) growing the female plant to sexual maturity in the fertility-selective growth medium to produce a plant having female fertility and male sterility;(d) growing the male plant to sexual maturity to produce a plant having male fertility;(e) cross-pollinating the female plant with pollen from the male plant to produce cross-fertilization;(f) raising the female plant to produce hybrid seeds having genetic material from both parents; and(g) harvesting the hybrid seeds.