Introduction of Zhongke No.4

The approval number of Zhongke No.4 is Yushenyu 2004006, and the breeding unit is the joint breeding of Beijing Zhongke Huatai Technology Co., Ltd. and Henan Ketai Seed Industry Co., Ltd. The variety source is the cross breeding of CT0 19 as female parent and 980 1 as male parent. The female parent inbred line CT0 19 was selected from (Qi 3 19× Shen 137)/ Qi 3 19 through five generations. The leaf sheath of the seedling is light purple, the plant type is semi-compact, the plant height is 260-270cm, the ear position is 100- 104cm, the leaves are green, the leaf margin is purple, and the number of leaves is 20-2 1. Filaments are light pink, glumes are light purple, and anthers are light green; Middle ear type, the ear length is about 19cm and the ear thickness is 4.9-5.2 cm; The number of rows per ear is 14- 16, and the number of grains per row is 36, which is hard grains. The top of yellow grain is white and the ear axis is white. The 1000-grain weight is about 350 grams, and the seed yield is about 84%. The growth period of summer sowing is 96-99 days.