Approved Rice Variety----Yanyou 1
Yanyou 1 is a combination of late rice bran produced by the Chinese Rice Research Institute using the 1A and 2070F combinations. In March 2005, it passed the review of Zhejiang Provincial Trial Committee. 1. Yield performance: Yanyou 1 was tested in single-season japonica rice in Hangzhou in 2002, with an average yield of 516.9 kg per mu, which was 16.5% higher than the control Shanyou 63, reaching a significant level; 2003 single-cropping hybrid japonica rice regional trial in Hangzhou The average yield per mu was 491.5 kg, which was 16.4% higher than that of the control Shanyou 63, reaching a significant level. The two-year average yield of 504.2 kilograms was 16.4% higher than the control. In 2004, the single-season japonica hybrid rice production trial in Hangzhou produced an average yield of 547.0 kilograms, an increase of 20.5% over the control. 2. Characteristics: The combined two-year trial in Hangzhou city averaged 136.4 days for the whole growing period, which was 8.2 days longer than the control Shanyou 63. In the two-year regional test, the average effective ear was 180,000, the total number of grains per panicle was 145.7, the number of grains per panicle was 125.5, the seed setting rate was 86.1%, and the grain weight was 25.6 g. According to the results of the Institute of Microbiology, Zhejiang Academy of Agricultural Sciences in 2004, the average leafhopper was 3.8, the ear blast was 5.0, and the ear blast loss rate was 7.7%; the bacterial leaf blight was 7.0, and the brown rice borer was 9.0. According to the results of the Rice Quality Supervision and Testing Center of the Ministry of Agriculture in 2003, the ratio of polished rice was 32.0%, the aspect ratio was 3.0, the chalkiness rate was 45.0%, the chalkiness was 7.2%, the transparency was grade 2, the gel consistency was 88.0 mm, and the straight chain Starch content 14.1%. 3. Validation opinion: The combination plant type is compact, resistant to fat, lodging resistance, strong tillering power, large spike type, high seed setting rate, good late maturation phase, high yield, middle rice blast, and bacterial blight Brown rice bran, better quality rice, cultivation should pay attention to the prevention and control of rice blast. Suitable for single and late planting in Hangzhou and similar ecological areas.
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