Introduction of Denghai 5 1 1 Maize Varieties

Applicant: Shandong Denghai Seed Industry Co., Ltd.

3. Breeder: Shandong Denghai Seed Industry Co., Ltd.

4. Variety source: HF 155×52 1.

5. Characteristics: The period from emergence to maturity of summer maize population in Huanghuaihai is 10 1.4 days, which is 1.4 days earlier than that of control Zheng Dan 958. Seedling leaf sheath is light purple, leaves are dark green, leaf margin is green, anther is light purple, glume is light purple. Compact plant type, plant height 250 cm, ear position 77 cm, number of leaves 19. The spike is tubular, the average spike length is 17.5cm, the rows per spike are 14- 16, the spike axis is red, the grain is yellow and dentate, and the 100-grain weight is 33.8g g. ..

Inoculation identification showed that it was moderately resistant to stem rot, moderately resistant to ear rot, susceptible to leaf spot, susceptible to Curvularia leaf spot, resistant to rough dwarf disease, susceptible to smut and susceptible to southern rust. Grain bulk density is 757g/L, crude protein content is 65438 00.93%, crude fat content is 3.65%, crude starch content is 72.65438 03%, and lysine content is 0.30%.

6. Yield performance: From 2065438 to 2065438+June, 2007, we participated in the regional test of Huanghuaihai Summer Maize Group, with an average yield of 703.0 kg per mu for two years, which was 5.6% higher than that of the control Zheng Dan 958. The production test in 20 17 years showed that the average yield per mu was 652.4 kg, which was 3. 1% higher than that of the control Zheng Dan 958.

7. Key points of cultivation techniques: Planting in plots with medium fertility or above, sowing in early to middle June, with a planting density of 4,500-5,000 plants per mu.