Breeding of National Approved New Maize Variety Zhengdan 1002
The new maize variety Zhengdan 1002 was bred using Zheng 588 as female parent and Zheng H71 as male parent.Its yield was 10 103.3 kg/ha in 2013-2014 national regional tests,6.7% higher than that of the control vareity Zhengdan 958.Its yield was 10 003.5 kg/ha in the productionl test in 2014,4.4% higher than that of the control vareity Zhengdan 958.Zhengdan 1002 has high disease resistance to northern corn leaf blight,southern corn leaf blight,corn curvularia leaf spot,corn dwarf mosaic virus,common smut.Its grain quality reached the first national standard of common maize,the second national standard of high-starch maize and forage maize.Zhengdan 1002 was examined and approved by National Evaluation Committee of Crop Variety in 2015,it was steady and high in yield,strong in resistance to diseases and drought,better in quality and suitable to be planted in Henan,Shandong,the south of Hebei,Guanzhong area of Shaanxi province,the north of Jiangsu and Anhui,the south of Shaanxi.