Abstract：Global transgenic herbicide-resistant crops accounted for more than 80% of the total transgenic crops plant area 125 million hm2 in 2008. Herbicide-resistance has been becoming the most important application of transgenic traits. The cost of weed control, herbicidal safety issue and residual injury problems contributed to quick development of transgenic herbicide-resistant crops. It is analyzed that large-scale commercialization of transgenic herbicide-resistant crops may result in uniform of herbicidal market and harmfully impact on herbicidal industry. In addition, it may face to other severe challenges that herbicide-resistant weed may evolve and the environmental safety issue of gene-flow may occur. Although transgenic herbicide-resistant crops are not commercialized yet, China is facing a good opportunity for development because of potential huge market and policy support. This article also addresses how to use herbicide-resistant gene reasonably, and the research and development strategy for transgenic herbicide-resistant crop. The purpose of this paper is to provide beneficial information with study and development of transgenic herbicide-resistant crops in our country.
