Zheng Mai 9023

Variety approval number: national examination and approval wheat 2003027

Variety name: Zhengmai 9023

Breeding unit: Henan Academy of Agricultural Sciences, Institute of Agricultural Sciences, Northwest University of Agriculture and Forestry

Variety source: {(Xiaoyan 6 × Xinong 65) × [83 (2) 3-3 × 84 (14) 43]} F3 × Shan 213

Provincial examination and approval: approved by Henan and Hubei crop Variety approval Committees in 2001 and Anhui and Jiangsu crop Variety approval Committees in 2002

Characteristics: spring, maturity 2 days earlier than the control Yumai 18. The seedlings are erect, the tillering ability is medium, the leaves are yellowish green, and the leaves are washed up. The plant height is 80 cm, the plant type is compact, and the lodging resistance is medium. The ear layer is neat, spike spindle type, long awn, white shell, white grain, keratin. The average panicle number per mu was 390000 ears, 27 grains per ear and 43 grams per thousand grain weight, while in the regional test in the middle and lower reaches of the Yangtze River, the average ear number per mu was 300000 ears, 30 grains per ear and 43 grams per thousand grains. The growth of winter and spring is prosperous, and the cold resistance is weak. Resistant to late high temperature, quick grouting and good ripening phase. Moderately resistant to stripe rust, moderately susceptible to leaf rust and stem rust, highly susceptible to scab, powdery mildew and sheath blight. In the Huanghuai south slice test, the bulk weight is 800g / L, the crude protein content is 14.5%, the wet gluten content is 33%, the sedimentation value is 44.4ml, the water absorption is 64.2%, the dough stability time is 7.6min, the maximum extension resistance 364.8E.U, the tensile area is 58.7square cm. The wheat area test in the middle and lower reaches of the Yangtze River showed that the bulk density was 777g / L, the crude protein content was 14.0%, the wet gluten content was 29.8%, the sedimentation value was 45.3ml, the water absorption rate was 59.9%, the stability time was 7.1min, the maximum extension resistance 445E.U, extensibility 17.7cm, the tensile area 103.9 square centimeters.

Yield performance: in 2002, participated in the regional trial of late sowing in the south of Huang-Huai winter wheat area, the average yield per mu was 458.2 kg, which was 4.7% higher than that of Yumai 18 (significant); in 2003, the average yield per mu was 448.5 kg, 2.7% higher than that of Yumai 18 (not significant); in 2003, the average yield per mu was 416kg, 2.1% higher than that of Yumai 18.

In the regional trial of the middle and lower reaches of the winter wheat area in the Yangtze River Basin in 2002, the average yield per mu was 337.1 kg, which was 5.9% higher than that of Yangmai 158 (extremely significant). In 2003, the average yield per mu was 309.2 kg, 3% higher than that of Yangmai 158 (extremely significant). Participated in the production experiment in 2003, the average yield per mu was 287.9 kg, 2.1% lower than that of the local control.

Key points of cultivation techniques: pay attention to the appropriate time for late sowing to prevent frost injury. The suitable sowing date for the southern part of Huang-Huai winter wheat region is October 15 ~ 25, with 15 ~ 200000 basic seedlings per mu, and 20 ~ 250000 basic seedlings per mu in the middle and lower reaches of the Yangtze River, and pay attention to control powdery mildew, sheath blight and scab. Harvest in time to prevent panicle sprouting. When planting in the south of Huang-Huai winter wheat area, pay attention to the backward movement of nitrogen fertilizer to ensure the supply of nitrogen in the middle and later stage and the quality of strong gluten.

Approval opinion of the National quality Review Committee: after examination, the variety conforms to the national wheat variety approval standard and has been approved. It is suitable for late planting in Henan Province, northern Anhui, northern Jiangsu and Guanzhong area of Shaanxi Province in the south of Huang-Huai winter wheat region. The wheat areas in the middle and lower reaches of the Yangtze River are planted in Anhui and Jiangsu along the Huaihe River, southern Henan and northern Hubei.