Patent ID: 6344599
Filing Date: 2002-02-05
Classification: A01H

Abstract:
A method of producing corn hybrids comprising:a) crossing a Reid Yellow Dent Stiff Stalk Synthetic (SSS) derived line and a Lancaster Surecrops (C103) derived line to produce an initial F1 hybrid; b) selfing said F1 hybrid to produce F2 seed; c) growing F2 plants and selfing those plants that have the same height, maturity, and ear size as the F1 hybrid; d) selecting the selfed F2 ears with F3 seed that have a grain yield that is at least 90% of the F1 hybrid; e) growing F3 plants from selected F2 ears; f) selfing F3 plants that have the same height, maturity, and ear size as the F1 hybrid; g) selecting the selfed F3 ears with F4 seed that have a grain yield that is at least 90% of the F1 hybrid; h) growing F4 plants from selected F3 ears; i) selfing F4 plants that have the same height, maturity, and ear size as the F1 hybrid; j) selecting the selfed F4 ears with F5 seed that have a grain yield that is at least 90% of the F1 hybrid; k) growing the F5 seed from a single selected F4 plant in field isolation to produce an open pollinated corn hybrid.