A New Single Cross Maize Hybrid for Silage and Grains, “Gangilok”

Abstract

A single cross hybrid “Gangilok” is an yellow semi-dent maize (Zea mays L.) developed by the Maize Experiment Station at Gangwon-do Agricultural Research and Extension Services in 2005. “Gangilok” has high yield of dry matter, total digestible nutrients (TDN) and grain. It was developed by cross between two inbred lines, HF1 and HF2. HF1 is the seed parent and HF2 is the pollen parent of “Gangilok”. Silking date of “Gangilok” is 1 or 4 days earlier than that of check hybrids. It is resistant to lodging because of its low ratio of upper ear height to plant height. Stay green of Gangilok is similar to that of check hybrid, “Kwanganok”. It is moderately resistant to Bipolaris maydis (southern corn leaf blight), resistant to Exserohilum turcicum (northern corn leaf blight), and moderate resistant to corn borer. Regional yield trial was conducted at four locations for three years. The yields of “Gangilok” in dry matter, TDN, and grain were 18.6 ton, 13.3 ton, and 8.9 ton/ha which were increased 10%, 12%, and 11% compared with check hybrid, respectively.