The list of 37 genetically modified corn varieties is as follows:
Yufeng 303D, Zhongkeyu 505D, Jiaxi 100D, Zhongkeyu 505R, Yufeng 303R, Yufeng 303H, Jingke 968TK, Jingke 968D, Zhengdan 958D, Nonghua 803D, Nongda 372R, Zhengdan 958K, Ruipu 909D, Dafeng 30F, Lihe 1D, Kehe 699D, Dongdan 1331D, Dongdan 1331K, Hongshuo 899SK.
Xiangyu 998HZ, Youdi 919HZ, Tianyu 108Z, Zengyu 1572KK, Denghai 605D, Denghai 533D, Zhengdan 958GK, Jinyuanyu 177K, Jingke 986GE, Kangnong 20065KK, Huimin 207R , Yuanke 105WG, Yuanke 105D, Heyu 187D, Xianda 901ZL, Tie 391K, Luodan 566DT, Wugu 3861KK.
Genetically modified corn is a genetically modified crop. Transgenic technology uses modern biotechnology to artificially clone the desired target trait genes and transfer them to recipient organisms through transgenic operations, thereby improving the original traits of the recipient organisms or giving them new excellent traits. As a major achievement of biotechnology industrialization, genetically modified corn has been widely used around the world.
Corn genetically modified breeding involves various traits such as insect resistance, herbicide resistance, high quality, stress resistance, disease resistance, high yield, bioreactor, etc. Among the products developed, insect resistance and herbicide resistance are the most common. , the widest range of applications.
Development History
Since insect-resistant and herbicide-resistant corn was licensed for commercialization in the United States in 1995, the promotion and application of genetically modified corn has been rapid. Statistics from the International Service for the Application of Agricultural Biotechnology (ISAAA) show that from 1996 to 2016, the cumulative planting area of ??genetically modified corn worldwide reached 600 million hm2.
Among the countries with larger GM corn planting areas, the United States ranks first, reaching 35 million hm2 in 2016, accounting for 92% of the total corn area; Brazil 15.7 million hm2, Argentina 4.7 million hm2, and Canada 1.5 million hm2. There are 231 registered corn genetic modification events, which does not include the vast majority of transformation events in China.
There are various genetic transformation technology methods and their improvement types applied in corn, each with its own advantages and disadvantages. The earliest successful report of transgenic corn began with protoplast transformation in 1988. The earliest genetic transformation method to cultivate fertile transgenic corn was biolistic transformation.
By optimizing conditions and using immature embryos and suspension cells as receptors, transformation events such as MON810, GA21, and NK603 were obtained. Agrobacterium-mediated maize genetic transformation technology was reported relatively late. It was not until Japan Tobacco Company published the Agrobacterium-mediated immature embryo transformation method and its standard procedures that it became more and more widely used in the industry.