Heyu 187 is a transgenic variety.

Heyu 187 is not a transgenic variety. Heyu 187 is a maize variety bred by V76-1 × WC009. It was examined and approved by the Ninth meeting of the third National crop Variety approval Committee on June 29th, 2017. the approval number: national examination and approval Yu 20170014.

I. introduction to the seeds of Heyu 187

1. Feature characteristics

The ripening period was similar to that of the control variety Jidan 27. Seedling leaf sheath purple, leaf green, leaf margin purple, anther light purple, glume green. The plant type is semi-compact, the plant height is 282cm, the ear height is 102.9 cm, and the number of adult leaves is 18. Filament green, fruit tube type, ear length 20.9 cm, ear row 14-16 rows, ear axis red, grain yellow, horse tooth type, 100-grain weight 40.6 g. Inoculation identification showed that it was moderately resistant to stem rot, susceptible to large spot, head smut, ear rot and gray spot. The grain bulk density is 759 g / L, the crude protein content is 8.16%, the crude fat content is 4.43%, the crude starch content is 74.66%, and the lysine content is 0.26%.

2. Yield performance

From 2014 to 2015, we participated in the regional trial of early-maturing spring maize varieties in Northeast China, with an average yield of 908.7 kg per mu in two years, an increase of 10.8% over the control; in the 2016 production test, the average yield per mu was 857.0 kg, 11.7% higher than that of the control.

3. Key points of cultivation techniques.

The plots with medium fertility were cultivated and sowed from late April to early May with a planting density of 4000-4500 plants per mu.

4. Approval opinions

The variety conforms to the national variety approval standard and has passed examination and approval. It is suitable to be planted in the second active temperate zone in Heilongjiang Province, in some areas of Yanbian Prefecture and Baishan City in Jilin Province, in the east of Tonghua City and in the east of Jilin City, in the south of Zhalantun City in Hulunbuir City in the east of Inner Mongolia, in the north-central part of Xingan League, in the middle part of Zalut Banner in Tongliao City, in the middle and north of Chifeng City, in the Qianshan Mountain of Wulanchabu City, in the north of Hohhot City and in the precocious area of Baotou City. Pay attention to the prevention and control of leaf spot, head smut, ear rot and gray spot.

2. Key points of cultivation of Heyu 187 varieties

1. Sowing date

Sow seeds in late April and early May

2. Density

Generally, there are about 55-60000 seedlings per hectare.

3. Fertilization

Apply sufficient base fertilizer, 250 kg of diammonium phosphate per hectare, 100 kg of potassium chloride and 250 kg of urea after topdressing.

Heyu 187 variety has strong resistance to insect and disease, and strong resistance to lodging.