What are the high-quality rice varieties? A guide to rice seed selection
Rice has a long history of cultivation in our country, and it can be said to have gone through multiple revolutions such as dwarfing, the three-line system, and the two-line system. At present, the rice planting area is very widely distributed in our country, and each region has its own distinctive rice varieties. Of course, in recent years some new rice varieties have also emerged one after another, which is also the result-oriented outcome brought by the development and progress of plant genetic breeding. So what are the high-quality rice varieties? Let us learn about them below.
1. Yueliangyou 3189 (2019 national preliminary approval)
Characteristics: Yueliangyou 3189 is an indica two-line hybrid rice, mainly distributed in the middle and lower reaches of the Yangtze River, with a whole growth period of 133.3 days. The plant height is 125.5 cm, the panicle length is 24.4 cm, the effective panicle number per mu is 167,000 panicles, the seed setting rate is as high as 84.9%, and the 1000-grain weight is 26.8 g. In addition, in terms of resistance performance, it is moderately resistant to rice blast, highly susceptible to brown planthopper, relatively strong in heat tolerance at the heading stage, and the head rice rate is 60.3%.
Yield performance: In the 2018 production test, the average yield per mu was 640.06 kg, an increase of 3.69% compared with the control Fengliangyou No. 4. In the two years of regional tests from 2017 to 2018, the average yield per mu was 595.24 kg.
2. Chunliangyou Huazhan (2019 national preliminary approval)
Characteristics: Chunliangyou Huazhan is also an indica two-line hybrid rice, mainly planted as double-cropping late rice in South China, with a whole growth period of 112.1 days. The plant height is 108.3 cm, the panicle length is 23.4 cm, the effective panicle number per mu is 157,000 panicles, the seed setting rate is 81.6%, and the 1000-grain weight is 25.8 g. In addition, in terms of resistance performance, the comprehensive index of rice blast in the two years was 3.0 and 3.3 respectively, the highest loss rate of panicle neck blast was grade 3, bacterial leaf blight was grade 5, etc., and the head rice rate was 63.1%.
Yield performance: In the 2017 continued test, the average yield per mu was 507.99 kg, an increase of 8.23% compared with the control; in the 2018 production test, the average yield per mu was 530.51 kg, an increase of 8.00% compared with the control Boyou 998.
3. Yangxianyou 919 (Su Shen Dao 20180001)
Characteristics: Yangxianyou 919 is a three-line hybrid mediumindica rice, with a whole growth period of 148.3 days. The plant height is 127.6 cm, the effective panicle number per mu is 148,000, the number of filled grains per panicle is 160.5, the seed setting rate is 84.0%, and the 1000-grain weight is 30.9 g. In terms of disease resistance, it is moderately resistant to rice blast, moderately susceptible to bacterial leaf blight, susceptible to sheath blight, and the head rice rate is 66.7%.
Yield performance: From 2015 to 2016, it participated in the Jiangsu provincial regional test. The average yield per mu over the two years was 705.8 kg, an increase of 8.3% compared with the control II You 084.
4. Zhaoyou 5431 (E Shen Dao 2015010)
Characteristics: Zhaoyou 5431 is a late-maturing indica medium rice variety, with a moderate plant type, relatively tall plants, and relatively strong tillering ability. In addition, its leaves are dark green, the panicle layer is relatively neat, the grains are long, the glume tips are colorless, and the late-stage ripening appearance is relatively good. The whole growth period is 142.1 days, the total number of grains per panicle is 188.5, the number of filled grains per panicle is 157.6, the seed setting rate is 83.6%, and the 1000-grain weight is 26.33 g. Disease identification shows that the comprehensive index of rice blast is 3.5, the highest loss rate of panicle blast is grade 5, moderately susceptible to rice blast, etc.
Yield performance: The average yield per mu in the two-year regional test was 642.34 kg, an increase of 7.34% compared with the control Q You No. 6. Among them: in 2013, the yield per mu was 629.00 kg, an increase of 7.81% compared with Q You No. 6; in 2014, the yield per mu was 655.67 kg, an increase of 6.90% compared with Q You No. 6.
The above is an introduction to some high-quality rice varieties and related content. It specifically analyzes their characteristics and yield performance. We hope everyone can have a clear understanding of these high-quality rice varieties.
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