Examination and Approval of Zhong Xuan 777 Corn
Examination number: Lu Shenyu 20 196048
Breeding: Dezhou Denong Seed Co., Ltd.
Variety source: the first generation hybrid, the combination is k144/Q29-101.
Characteristics of Maize Seed Zhong Xuan 777
Zhong Xuan 777 has a compact plant type, with a summer sowing growth period of 104 days, and a mature period equivalent to that of the control Zheng Dan 958. The whole plant has 2 1 leaf, the leaf sheath of the seedling is dark purple, the filaments are cyan, the anthers are light red, and the male ear has 5 ~ 7 branches.
test result
① Plant types
The plant height of 777 maize seed is 287.3 cm, the ear position 10 1.7 cm, and the lodging rate is 0.4% and 0.2%.
② Ears
The ear of 777 maize is tubular, with ear length 17.8 cm, ear thickness 4.9 cm, bald tip10.2 cm, and average rows per ear 16 rows.
③ Grain
The number of grains per panicle of 777 is 530.2, which is red axis, yellow grain and half horse tooth type. The seed yield is 85.0%, the 1000-grain weight is 353.9g, and the bulk density is 75 1 g/L. ..
④ Inoculation identification
20 18 was inoculated by plant protection college of Shandong agricultural university, and its disease resistance was identified as smut resistance, moderate resistance to stem rot, ear rot, Curvularia leaf spot and southern rust, leaf spot and rough dwarf disease.
⑤ component determination
The grain quality supervision, inspection and testing center of the Ministry of Agriculture (Taian) analyzed the quality of 777 corn selected in 2065438+2008. The results showed that the crude protein content was 1 1.3 1%, the crude fat was 3.8 1%, and the lysine was 2.60ug/mg.
Yield performance
20 17-20 18, 777 maize varieties were selected to participate in the independent test of the common group of summer maize varieties (5000 plants/mu) of Guofeng Anbang Science and Enterprise Consortium, with an average yield of 700. 15 kg per mu, which was 7.95% higher than that of the control Zheng Dan 958.
The average yield of 777 maize seeds bred by 20 18 was 634.2kg, which was 4.6% higher than that of Zheng Dan 958.
Key points of cultivation techniques
The suitable density is 4500 ~ 5000 plants per mu, and other management measures are the same as those in general fields. Moreover, it is necessary to apply sufficient base fertilizer in the field before planting this corn variety, and apply appropriate seed fertilizer when planting, which can enhance the seedling growth and better improve the corn yield.
Warm reminder: The relevant introduction of this article has been sorted out through the network, and the specific information is subject to the introduction of the corresponding seed official website.