关键词: 水稻;基因飘流;阈值距离

Abstract:

Rice is one of the most important food crops. At present, transgenic insect-resistant rice has obtained safe certificate in China and transgenic rice with other traits have entered cultivation test and environmental release stage. So transgene flow of rice was paid more attention. This article reviewed and analyzed the data and information on rice tansgene flow, which is published internationally in recent ten years. The data include the frequencies and distances of gene flow to common cultivars, male-sterile lines and common wild rice (Oryza Rufipogon). It is indicated that the frequency of transgene flow to male-sterile lines is highest, to common cultivars is lowest, and to common wild rice is between male-sterile lines and common cultivars. The isolation distances at a threshold level 0.1% for the three categories of rice are determined.

Key words: rice, gene flow, threshold distance