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Introduction to Virus-Free Sweet Potatoes and Their Excellent Varieties
Virus-free sweet potatoes refer to sweet potatoes obtained through virus-elimination technology and confirmed by strict virus testing to be free of certain viruses, as well as their offspring bred in aphid-free and pathogen-free soil. At present, viral diseases have become an important cause of the degeneration of seed performance, yield decline and quality deterioration of sweet potatoes in Henan Province, while virus-free sweet potatoes can generally increase yield by more than 30%, and their quality and appearance are also improved. Therefore, selecting virus-free sweet potato seedlings is the prerequisite for achieving high sweet potato yields. Starch-processing sweet potato Xushu 18: virus-free
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What are the excellent virus-free sweet potato varieties in Henan?
Virus-free sweet potatoes refer to sweet potatoes obtained through virus-free technology and confirmed by strict virus testing to be free of certain viruses, as well as their offspring bred in aphid-free and pathogen-free soil. At present, viral diseases have become an important cause of the degradation of sweet potato seed performance, yield decline and quality deterioration in Henan Province, while virus-free sweet potatoes can generally increase yield by more than 30%, and their quality and appearance are also improved. Therefore, selecting virus-free sweet potato seedlings is the prerequisite for achieving high sweet potato yields. Starch processing
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Precautions for Regional Comparative Trials of Cotton Varieties (Lines)
Regional comparative trials of cotton varieties (lines) compare newly introduced varieties (lines) with locally dominant varieties to assess their earliness (growth period), quality, yield potential, and resistance to pests and diseases, as well as their economic traits and fiber quality. The main purpose is to evaluate the performance of the test varieties (lines) across cotton regions and provide a scientific basis for selecting superior varieties in each region. 1. Selection of trial site The selected trial site must be representative and uniform. It should have level land, medium-to-high and uniform fertility, a uniform previous crop, convenient irrigation and drainage, properly positioned plots, and adequate light.
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Many cotton varieties, and this is what the national approval says (final part)
Characteristics: A transgenic insect-resistant hybrid first-generation variety, grown as spring cotton in the Yellow River Basin cotton region, with a full growth period of 136 days. The plant is tower-shaped and relatively loose, with a plant height of 93.7 cm, many stem hairs, medium-sized dark green leaves with obvious wrinkles, the first fruiting branch node at 6.5 nodes, 13.2 fruiting branches per plant, and 15.8 bolls per plant; the boll is oval with a relatively blunt tip, single boll weight 5.6 g, easy boll opening, seed index 10.4 g, lint percentage 40.6%, and pre-frost flower rate 90.5%. Highly resistant to Fusarium wilt, tolerant to Verticillium wilt, highly
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Multiple high-yield, multi-resistant, high-quality hybrid japonica rice varieties successfully bred in Tianjin
After several years of research, the Rice Research Institute of the Tianjin Academy of Agricultural Sciences has successfully bred 9 new high-yield, multi-resistant, high-quality hybrid japonica rice varieties. At present, 6 of the new varieties have been designated as nationally approved high-quality hybrid japonica rice varieties, with an annual promotion area of more than 1 million mu, accounting for 20% of the total hybrid japonica rice area in China. It is understood that the Rice Research Institute of the Tianjin Academy of Agricultural Sciences, through independent innovation, successfully solved the worldwide problem of hybrid japonica rice breeding, and was the first in China to establish a hybrid japonica rice breeding technology system and seed production system, raising hybrid seed purity
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Wide choice of cotton varieties, cotton farmers can choose as needed
Recently, several readers have asked our newspaper for help, seeking to buy seeds of new insect-resistant cotton and hybrid cotton varieties. Due to limited seed sources and a tight market, most readers were unable to get what they wanted. Faced with this year's cotton seed supply situation, how can cotton farmers choose cotton varieties that suit them? After contacting the Crop Cultivation Station of the Jiangsu Provincial Department of Agriculture and Forestry and other relevant departments, this author believes that the choice of cotton varieties is still quite wide. For cotton farmers preparing to practice intercropping and relay intercropping in cotton fields, it is of course best to be able to choose cotton varieties with strong plant growth and good insect resistance, as this can both widen the cotton row spacing,
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What are the new cotton varieties nationally approved in 2006
Xiangzamian No. 11. This variety was jointly bred by the Hunan Cotton Science Research Institute (15 Yuxia Avenue, Qiaonan, Changde City, Hunan Province, postal code: 415101), the Biotechnology Research Institute of the Chinese Academy of Agricultural Sciences and other institutions. Characteristics: it is a transgenic insect-resistant hybrid first-generation variety, with a spring-sowing growth period of 126 days in the cotton region of the Yangtze River Basin. The plant is tower-shaped, with a plant height of 113.1cm, thick stems with more fine hairs, medium-sized dark green leaves, the first fruiting branch node at 6.6 nodes, and 2 bolls per plant
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15 new cotton varieties approved at the national level
The Ministry of Agriculture issued Announcement No. 706 on August 28 last year. The new cotton varieties approved at the fifth meeting of the First National Crop Variety Approval Committee are: 1. Zhongzhi Cotton No. 2: approval number 2006001. Breeding institution: Institute of Plant Protection, Chinese Academy of Agricultural Sciences, etc. It is a transgenic insect-resistant conventional spring cotton variety. The spring sowing growth period in the Yellow River Basin cotton region is 125 days. From 2004 to 2005, it participated in the regional variety trial of the spring cotton group in the Yellow River Basin cotton region. The yields of seed cotton, lint cotton and pre-frost lint cotton per
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Introduction to Two Cotton Varieties Including the New Variety Lu RH-2
Approval number: Lu Nong Shen 2006031. Breeders: Jiyang County Luyou Cotton Research Institute, Biotechnology Research Institute of the Chinese Academy of Agricultural Sciences. Variety source: K321 (selected from Shiyuan 321)/(S45/GK12) F1. Characteristics: A transgenic insect-resistant hybrid cotton variety. Rapid emergence, robust seedling growth, strong growth in the mid-to-late stages. Growth period 129 days, plant height 106 cm, cylindrical plant shape, medium leaves, dark green leaf color, first fruiting branch node at 7.0, number of fruiting branches 13.8, bolls per plant 2
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What Are the New Cotton Varieties? A Practical Guide to Seed Selection for Cotton Growers
1. Hongtaiyang 2, a new conventional cotton variety. In 2005 it was approved by the **Uyghur Autonomous Region Crop Variety Approval Committee (approval number: Xinshenmian 2005027), and in the same year was listed by the Ministry of Agriculture's National Agricultural Technology Extension Service Center as a "National Cotton Display Variety" (demonstration number: Guoshifan 2005022). Characteristics: growth period 135-140 days, an early-to-mid maturing type variety; strong growth vigor, open plant architecture, medium-sized leaves, relatively abundant leaf hairs, strong boll setting
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