转基因甘蓝型油菜向其近缘种的基因漂移研究进展

Research Progress in Gene Excursion from Transgenic Rapeseed(Brassica napus) to Its Relatives

从甘蓝型油菜的生活周期出发,概述了甘蓝型油菜及其近缘种的开花习性、甘蓝型油菜与其近缘种的杂交亲和性、杂种及其回交后代的育性和适应性,评价了在中国环境条件下甘蓝型油菜中的外源基因向其近缘种漂移而导致生态风险的可能性。认为在中国环境条件下,转基因甘蓝型油菜向其野生杂草近缘种的基因漂移风险较小,而如何防止转基因向白菜型油菜(Brassica rapa)和芥菜型油菜(B.juncea)转移应作为中国转基因甘蓝型油菜基因漂移风险控制的关键。

This paper reviewed the geographical distribution, flowering habits, hybridization compatibility, fertility and adaptability of hybrid and backcress generations of rapeseed （Brassica napus） and its relatives in China based on the life cycle of B. napus. In view of the current research and environmental release of worldwide, the risk of gene excursion from transgcnic rapeseed to its relative species was generally assessed. It concluded that the possibility of gene excursion from transgenic rapeseed to its wild weedy relatives was relatively low, and the key to control gene excursion of transgenic B. napus was to reduce the probability of gene excursion from transgenic Brassica napus to B. rapa and B. juncea under Chinese environment.