China has developed drought-resistant transgenic wheat
Research on the cultivation of drought- and water-saving genetically modified wheat varieties carried out by the Institute of Crop Science, Chinese Academy of Agricultural Sciences has achieved the latest results. The water use efficiency of the new transgenic wheat lines cultivated in this project will increase by more than 15% and yield will increase by more than 10%, which will have greater potential for production and application.
According to the project leader Ma Youzhi, a research fellow at the Chinese Academy of Agricultural Sciences, the drought resistance of plants is a complex trait controlled by multiple genes. Conventional breeding is difficult and the cycle is long. Molecular marker technology for complex traits controlled by multiple genes is also No breakthrough has yet been made. By increasing the expression of DREB, an important regulatory gene that plays an important role in drought resistance, the expression of multiple drought-responsive functional genes can be enhanced, which can effectively improve the drought resistance of plants.
Drought and water shortage are important limiting factors for wheat production in China, and are particularly prominent in major wheat producing areas such as Hebei and Shandong. For example, wheat in Hebei Province accounts for 70% of the province's total agricultural water use, and the effective utilization of water resources is only about 40%. At the same time, the existing high-product species have higher requirements for fertilizer and water, and there is an urgent need for high-yield, stable-yielding varieties under reduced irrigation conditions.
Researchers have systematically analyzed the expression characteristics of more than 60 DREB genes present in wheat and soybean genomes at the level of the whole genome using the drought-tolerant wheat “Sola†and the salt-tolerant soybean variety Tiefeng No. 8 as materials. Through gene transformation, its function was identified in wheat, and two key drought-responsive genes with important use value were obtained.
The experimental results showed that DREB gene was over-expressed in Jimai19 and other wheat varieties, and the drought- and water-saving ability of the transgenic wheat was significantly improved. Under drought stress conditions, compared with the control, the transgenic wheat yield increased by more than 10%, and the water use efficiency increased by more than 15%. The researchers used genetically modified technology to transfer key drought-resistant genes autonomously cloned into China's large-scale wheat varieties, such as Jimai 19, Jimai 22, Shi 4185, and Tan 6172. Through field identification for many years in Hebei, Shandong, and Shanxi Provinces, 16 transgenic wheat lines with significant super-responsive parents of drought-resistant water-saving plants and super-regional control varieties were obtained.
Glass exit signs and emergency lights help to safely evacuate even the most complex buildings. When a fire or natural disaster causes a building to lose power, these signs are intact and illuminated, guiding those inside to safely evacuate and escape. The glass exit signs are highly permeable, giving you clear directions even in the dark, and the letter words "EXIT" can be custom printed on the glass. Suitable for use in shopping malls, cinemas, parking lots, office buildings, hotels, and other public places. Glass emergency signs are easy to install, can be mounted on the wall or hung from the ceiling, and can be rechargeable for continuous operation.
Led Exit Light,Glass Exit Sign,Emergency Light Fixture,Exit Sign With Emergency Lights
Jiangmen City Pengjiang District Qihui Lighting Electrical Appliances Co., Ltd , https://www.qihuilights.com