Variety name: Zhou Nuo 1
Examination number: Guo Shen Yu 2007035
Sender: Zhoukou Academy of Agricultural Sciences, Henan Province
Variety source: Zn214× Zn11.
Characteristics: It takes 73.9 days from emergence to maturity in Huang-Huai-Hai area, which is earlier than the control SEAO 1 day, and the effective accumulated temperature is about 2200℃. Seedling leaf sheath is purple, leaf is green, leaf margin is red, anther is yellow and glume is blue. The plant type is compact, the plant height is 233.7 cm, the ear height is 100. 1 cm and the number of leaves is 2 1-22. Filaments are red, with conical spikes, the spike length is 20. 1cm, the rows per spike are 16. 1, the spike axis is white, the grain shape is white, and the 100-grain weight (fresh grain) is 28.97g g. The average lodging rate is 5.4%.
After two years of inoculation and identification by the Institute of Plant Protection of Hebei Academy of Agricultural Sciences, it was found that the variety was resistant to leaf blight (grade 5-5), moderately resistant to leaf blight (grade 5-7), head smut (disease range%-%), highly susceptible to stem rot (38.9%-63.0%) and moderately resistant to dwarf mosaic (disease index in adult stage).
After tasting and identification by experts in the regional trial of edible waxy corn in Huanghuai seafood, it reached the second-class standard of fresh waxy corn issued by the Ministry. After two years' determination by Zhengzhou National Maize Improvement Center, amylopectin accounted for 99.36% of the total starch content (the range was 98.72%- 100%), which reached the waxy corn standard issued by the Ministry.
Yield performance: In 2005, the national regional trial of waxy corn eating seafood in Huanghuai District (Group II), the average yield per mu was 829.3 kg, which was 40.97% higher than that of the control SEAO waxy 1, ranking 1 among 16 tested varieties, and the coefficients of variation between locations were 13.58 and/kloc-0. In 2006, the average yield per mu of fresh panicle was 8 13.8 kg, which was 26.5% higher than that of the control SEAO waxy 1, ranking fourth among 19 tested varieties, and all 13 tested varieties increased their yield.
Summary of national regional trials in 2005-2006: the yield increased by 25 points, and the yield decreased by 0 points, with an average yield per mu (fresh panicle) of 82 1.5 kg, which was 33.7% higher than that of the control SEAO 1;
Key points of cultivation techniques: 1. Isolation planting: waxy corn is controlled by recessive genes and is easily affected by pollen allelopathy of non-waxy corn, so it should be isolated from non-waxy corn by means of time isolation, space isolation or obstacle isolation.
2. Strengthen field management: before popularization, we should control water and fertilizer management, give priority to organic fertilizer, reduce the amount of inorganic fertilizer, and pay attention to increasing the amount of P and K fertilizers; Sufficient water and fertilizer should be ensured at the big bell mouth stage and filling stage, and attention should be paid to the prevention and control of corn borer.
3. Sowing by stages: determine the production scale according to the sales and processing capacity, and sow by stages; Generally, the seeds can be sown after the middle of April, and the plastic film mulching can be advanced to the end of March, once every 7- 10 days.
4. Reasonable close planting: The suitable planting density is 3500-4000 plants/mu for medium fertility plots and 4500 plants/mu for high fertility plots.
5. Timely harvesting: the harvesting period of fresh fruit ears is 23-25 days after pollination, and the harvesting is completed in 2-3 days to ensure the quality of fresh food. It is advisable to harvest when the black layer is mature to increase the yield.
Approval opinion: It is suitable to plant fresh waxy corn varieties in summer sowing areas in Beijing, Tianjin, central and southern Hebei, Shandong, Henan, Guanzhong, Shaanxi and northern Anhui.
A New Maize Variety —— Zhou Dan No.9
Variety name: Zhou Dan No.9.
Approval number: Yushenyu 2007006
Breeding unit: Zhoukou Academy of Agricultural Sciences
Variety source: Zhou 226× Zhou 72-25
Characteristics: The growth period of summer sowing is 96 days. The plant type is compact, the plant height is 239cm, the ear height is 1 10cm, and the total leaves of the whole plant are 2 1-22. The leaf sheath is dark purple, the leaf color is dark green, and the tip of the first leaf is spoon-shaped; The tassel has 14- 17 branches, red glume, yellow anther and pale pink filaments. The spike is tubular, the spike length is 17cm, the spike diameter is 4.8cm, the number of rows per spike is 14- 16, and the number of grains per row is 38. White spike axis, yellow grain, semi-hard grain type, 1000-grain weight 3 15g, and seed yield 87.9%.
In 2005, the Agricultural Products Quality Supervision and Inspection Center of the Ministry of Agriculture (Zhengzhou) detected that the grain crude protein 10.46%, crude fat 4.29%, crude starch 70.78%, lysine 0.29%, and the bulk density was 744 g/L. The quality reached the level of ordinary corn 1 level and feed corn 1 level.
Identification of artificial inoculation resistance in Institute of Plant Protection, Hebei Academy of Agricultural Sciences in 2005: high resistance to smut (0.0%) and dwarf mosaic (3.9%); Resistance to stem rot (9. 1%) and resistance to small class disease (grade 3); Moderate resistance to leaf blight (grade 5); Curvularia leaf spot (grade 7) and corn borer (grade 7. 1) are sensitive to comprehensive disease resistance.
Yield performance: In 2004, the average yield per mu of the provincial trial (4000 plants/mu) was 563.2kg, which was 3. 1% higher than that of the control Zheng Dan 958, with no significant difference, ranking third among the tested 18 varieties. In 2005, the experiment was continued (4000 plants/mu in two groups), and the average yield per mu was 634.9 kg, which was 3.7% higher than that of the control Zheng Dan 958, and the difference was not significant, ranking second among 17 varieties. The average yield per mu in the two-year experiment was 595.65438 0 kg, which was 3.4% higher than that of the control Zheng Dan 958.
The provincial production test (4000 plants/mu) in 2006 showed that the average yield per mu was 5 18.5kg, which was 4.4% higher than that of the control Zheng Dan 958, ranking sixth among the nine varieties tested.
Key points of cultivation techniques: (1) sowing date and density: sow under the condition of sufficient water, and the suitable sowing date is before June 10; The suitable planting density is about 4000 plants/mu with medium fertility and 4500 plants/mu with high fertility.
(2) Field management: timely seedling raising and intertillage weeding to control pests and diseases. About 20 kilograms of pure nitrogen can be topdressing per mu, which can be applied once or in stages at the big bell mouth stage, and attention should be paid to the coordinated application of phosphorus and potassium fertilizers. Pay attention to the prevention and control of corn borer at the big bell mouth stage and filling stage.
(3) Timely harvesting: harvesting after mammary glands disappear, so as to give full play to the high-yield potential of this variety.
Approval Opinion: Suitable for planting in all parts of Henan Province.
Zhou Dan 1 1
Variety name: Zhou Dan 1 1
Approval number: Yushenyu 2008007
Breeding unit: Zhoukou Academy of Agricultural Sciences
Variety source: Zhou 03 1× Zhou 72-25.
Characteristics: Zhou Dan 1 1 seedlings have strong arching ability. The tip of the first leaf is spoon-shaped, the leaf sheath is purple and the leaf color is dark green. The plant has stout stems, well-developed roots, dark green leaves, slightly wider middle leaves, 2 1-22 leaves, semi-level leaves, semi-compact plant type, plant height of 270.3cm, panicle position1/2.7 cm, and slightly shorter male panicle branches with12-. Medium-barrel spike, spike length 18.5cm, spike diameter 5.0cm, rows per spike 15.4, number of grains per row 37.0, neat grain arrangement, seed rate 85.2%, 1000-grain weight 288.8 g, yellow red axis, semi-hard grain-hard grain type with excellent quality. Strong resistance and wide adaptability. Generally, the yield per mu is 600 kg, and the high-yield field can reach more than 700 kg.
Quality analysis: In 2005-2006, the agricultural products quality supervision, inspection and testing center of the Ministry of Agriculture (Zhengzhou) detected that the grain crude protein10.49-1%,crude fat 3.87-4.87% and crude starch 72.65438+. The quality reached the national standards of ordinary corn 1 grade, feed corn 1 grade and high starch corn.
Identification of disease resistance: Zhou Dan 1 1 was artificially inoculated in 2005-2006 to identify moderate resistance to small class disease (grade 5-7), moderate resistance to big leaf spot (grade 3-5), high resistance to Curvularia leaf spot (grade 1-5) and high resistance to dwarf mosaic (grade 5).
Yield performance: In 2005, the maize regional test (4000 plants/mu, three groups) increased the yield at 8 o'clock and 6 o'clock, with an average yield of 656.7 kg per mu, which was 3.3% higher than that of the control Zheng Dan 958, and the difference was not significant, ranking third among 17 tested varieties. In 2006, the experiment was continued (4000 plants per mu), and the yield was increased at 8 o'clock and 6 o'clock, with an average yield of 500.7 kg per mu, which was 2.9% higher than that of the control Zheng Dan 958, and the difference was not significant, ranking eighth among the 20 tested varieties. The average yield per mu in the two-year experiment was 578.7kg, which was 3. 1% higher than that of the control Zheng Dan 958, and ranked as 1 in the two-year experiment.
In the provincial production test (4000 plants/mu) in 2007, the total yield increased at 8: 00, with an average yield of 56 1 kg per mu, which was 6.9% higher than that of the control Zheng Dan 958, ranking fourth among the nine tested varieties.
Key points of cultivation techniques:
1. Sowing date and density: Sow before June 10. The suitable planting density is 4000 plants/mu with medium fertility and 4500 plants/mu with high fertility.
2. On-site management:
(1) seed dressing with 50% thiram wettable powder, pay attention to sufficient moisture content during sowing to improve sowing quality; And intertillage weeding; Pay attention to the prevention and control of thrips, cotton bollworm and other pests at seedling stage to ensure strong seedlings.
(2) Topdressing pure nitrogen is about 20kg per mu, which can be applied once at the big bell mouth stage or by stages, and attention should be paid to the coordinated application of phosphorus and potassium fertilizers. Pay attention to the prevention and control of corn borer at the big bell mouth stage and filling stage.
(3) Harvest corn seeds after the mammary glands disappear and the black powder layer appears, so as to give full play to the high yield potential of this variety.
Approval Opinion: Suitable for planting in all parts of Henan Province.