A Waxy Corn Hybrid with Long Ear and Lodging Resistance, ＂Chalok3＂

다국어 초록 (Multilingual Abstract)

Chalok3, a new waxy corn hybrid was developed at the National Crop Experiment Station, RDA in 2001. It is a single cross hybrid, which was crossed between KW35 as a seed parent and KW7 as a pollen parent. Chalok3 was 73 days in days to silking and eight days later than Chalok1. Plant height of Chalok3 was 215cm and taller than that of Chalok1. Chalok3 was 4.2cm longer than Chalok1 as 20.2cm in ear length, but shorter in ear diameter. The ratio of kernel set length/ear length was 97 % and higher than other hybrids. Chalok3 was relatively resistant to Biporalis maydis (Southern leaf blight) and maize dwarf mosaic virus, and resistant to lodging. Chalok3 was compared with Chalok1 as the designation of Suwon31 at four sites for three years from 1999 to 2001. In these tests, the fresh ear weight of Chalok3 was 9.90 ton/ha and 13% higher than that of Chalok1. Chalok3 can be adapted in all over the country.