Ludan 501

　　[Variety Characteristics and Features]

　　Variety Origin:

　　First-generation hybrid variety, combination of Qixi 501A/Qixi 501B. The female parent Qixi 501A is bred from P78599/Reid as the basic material, and the male parent Qixi 501B is derived from H21/Chang7-2//Chang7-2 backcross breeding.

　　Features and Characteristics:

　　Compact plant type, summer-sown growth period of 106 days, 2 days earlier than Zhengdan 958. Total of 20 leaves, seedling sheath purple, styles pink, anthers purple, male spike with 5-8 branches. Regional test results: plant height 268.9 cm, ear height 96.8 cm, lodging rate 3.5%, breakage rate 0.3%. Corn ear cylindrical, ear length 17.5 cm, ear diameter 4.9 cm, tiplessness 1.0 cm, average of 16.3 rows per ear, 564 kernels per ear, red stalk, yellow kernels, dent type, 88.3% kernel yield, 335.4 g per 1000 kernels, 740.2 g/L bulk density.

　　Production Performance:

　　In 2015, participated in the regional trial of the general group of summer corn varieties (4,500 plants/acre) in the province, with an average yield of 723.1 kg per acre, a 7.0% increase over the control Zhengdan 958; In 2016, participated in the regional trial of the general group of summer corn varieties (4,500 plants/acre) in the province, with a yield of 693.0 kg per acre, a 4.0% increase over the control Zhengdan 958; The average yield of the general group of summer corn varieties (45 average yield per acre) trial was 672.9 kg per acre, a 4.0% increase over the control Zhengdan 958.

　　Cultivation Techniques Key Points:

　　Appropriate density is around 4,300 plants per acre, with other management measures similar to those of general fields. Suitable range:

　　Planting and utilization of summer corn varieties in suitable areas throughout the province.