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Introduction to the Rice Variety Hongyou 5355
(1) Origin: This medium indica late-maturing combination was developed by Mianyang Economic and Technical College by crossing the self-bred Hong'ai A with CDR5355, which was selected by the Crop Research Institute of the Provincial Academy of Agricultural Sciences. (2) Characteristics: The full growth period is 146.4 days, 0.7 days shorter than Shanyou 63; plant height is 113.7 cm, panicle length is 24.6 cm, grains per panicle are 147.1, seed setting rate is 82.87%, 1000-grain weight is 29.7 g, grain quality is good, and it is resistant to rice blast. (3) Yield performance: The average for the two-year provincial regional trial in 1997-1998
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After rice is flooded, attention must be paid to the three prevention measures
From mid-to-late June to mid-to-late July, southern regions are often hit by heavy rain, and some areas are prone to flooding disasters. If flooding occurs, in addition to carrying out conventional remedial measures, attention must also be paid to preventing outbreaks of bacterial diseases and mass outbreaks of migratory pests. Prevent the spread of bacterial brown stripe disease. As floodwaters overflow, the pathogen spreads and is transmitted and infects through wounds on rice plants caused by rain and floodwaters. The resistance of submerged rice plants declines, which is more conducive to disease spread. There is a process from after flooding to disease spread, therefore, for middle-season rice in flooded areas,
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How to manage water and fertilizer well after rice is hit by floods
What should be noted when righting and washing rice seedlings? For flooded paddy fields, drain the standing water promptly and right the lodged seedlings; clear the ditches in time to lower the groundwater level. Where irrigation facilities have suffered heavy damage, organize forces promptly for emergency repairs. After the water in the paddy field recedes, open ditches to drain it, so that soil water in the field seeps into the ditches and is discharged, lowering the field moisture content as quickly as possible, so that the floating mud formed by flooding gradually settles and compacts, thereby promoting new root growth. For fields that have been submerged for a long time, the water can be drained off all at once in rainy weather; if there is scorching sun and high temperature, drain gradually, first letting
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What are the newly approved (recognized) rice varieties in Hunan Province
The Hunan Provincial Crop Variety Approval Committee held a meeting in February 2000 and approved (recognized) 15 new rice varieties. 1. Approved varieties (12) Rice varieties and combinations: Xiangzaoxian 31 (formerly Fengyouzao 11), Xiangzhongxian 4 (formerly Zhou 7010), Xiangzhongnuo 1 (formerly Cinuo 48), Xiangwannuo 1 (formerly Xiangji 9512), Baliangyou 96 (810S/Huai 96-1), K You 17, Yueyou 63 (Yue 4A/Minghui 63), Weiyou 1
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Degradable-film controlled-release fertilizer for rice successfully developed in Hunan Province
The Soil and Fertilizer Institute of Hunan Province has developed a degradable-film controlled-release fertilizer for rice that can be widely applied in rice-growing regions of China with no side effects. Using natural and semi-natural polymer materials as the main coating components and adopting a self-developed new fluidized dual-spray-bed coating process, the Soil and Fertilizer Institute of Hunan Province developed a degradable-film controlled-release fertilizer whose nutrient release can be artificially controlled within 30 to 330 days. This controlled-release fertilizer is non-toxic, completely degrades within 2 years after being applied to the soil with no residue, and can reduce fertilizer pollution of the atmosphere, soil, water bodies and other environments.
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Introduction to the Characteristics of the Rice Variety Huhan 3
Variety source: Ma Wan Nuo // IRAT109 / P77. Characteristics: This variety is a conventional japonica-type upland rice. When grown as rainfed upland rice in the mid-season rice region of the middle and lower reaches of the Yangtze River, the average whole growth period is 113.8 days, 4.3 days later than the control Brazilian upland rice "IAPAR9". Plant height is 99.3 cm, seedling growth is vigorous, and the plant-leaf type is average. The number of effective panicles per mu is 179,000, panicle length is 19.4 cm, total grains per panicle is 101.6, seed setting rate is 71.0%, and 1000-grain weight is 26.2 g. Resistance: drought resistance grade 1, rice blast grade 1, bacterial blight
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Detailed Introduction to the Rice Variety Huhong Zao No. 1
Breeding institution: Rice and Sorghum Research Institute, Sichuan Academy of Agricultural Sciences. Approval status: approved by the Sichuan Provincial Crop Variety Approval Committee in 1986, by the Hunan Provincial Crop Variety Approval Committee in 1988, and by the National Crop Variety Approval Committee in 1991. Variety registration number: GS01018-l990. Variety source: 1277/Red 410. Characteristics: an early indica medium-maturity variety. Strong growth at the seedling stage, medium tillering, dark green leaf color, plant height about 75 cm
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Application of Anther Culture Technology in Rice Breeding
Using disease-resistant plants from the first backcross generation for anther culture can transfer disease-resistance genes into japonica rice in a short time, accelerating the process of disease-resistant breeding in japonica rice. Zhejiang Agricultural University began making crosses in 1975. An anther culture was carried out in 1976, and by 1977 stable varieties resistant to rice blast and bacterial leaf blight, such as Dan 209, had been developed. The whole process took only 3 years, and resistance genes for two diseases were transferred at the same time; its breeding speed and efficiency greatly exceeded the conventional research methods of Japanese scholars. This study also explored the approach of applying the anther culture method in seed production to produce foundation seed. Tests showed that pure lines from anther culture had a certain effect of purification and rejuvenation compared with foundation seed produced by the "three-plot method." Anther-cultured disease-resistant varieties have now been used as resistance sources for late japonica rice.
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Detailed Introduction to the Rice Variety Huayu 560
Characteristics: This variety is a japonica conventional rice variety. When planted in southern Liaoning, southern Xinjiang, and the Beijing-Tianjin region, its full growth period is 160.1 days, 3.6 days later maturing than the control Jinzhu 1. Plant height is 97.4 cm, total grains per panicle is 104.8, seed setting rate is 90.8%, and 1000-grain weight is 27.1 g. Rice blast resistance is grade 3. Main rice quality indicators: head rice rate 69.4%, chalky grain rate 17%, chalkiness degree 1.7%, gel consistency 82 mm, and amylose content 16.6%. Yield performance: In 2002, it participated in the northern
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Introduction to the Characteristics of the Rice Variety Huahang 1
Variety Introduction: Huahang 1 is a new high-quality, high-yield rice variety bred by the Department of Agronomy at South China Agricultural University. Rice seeds were carried aboard a Chinese recoverable satellite for 15 days of space flight and then sown on the ground, and the variety was selected from several hundred mutant single plants grown on the ground. This variety has the following characteristics: 1. Excellent grain quality; the grains are transparent with no white belly, and the length-to-width ratio is 3.3-3.5. According to the appraisal by the Guangdong Provincial Grain and Oil Quality Inspection Station, the early rice belongs to the first-grade rice class. 2. Good yielding performance. Large panicles with many grains and a high seed-setting rate; the average total number of grains per panicle is about 209, and the number of filled grains is about 196,
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