草坪草转基因育种研究进展

Research progress in transgenic breeding of excellent warm-season turfgrass

转基因技术在草坪草育种上的应用研究进展迅速,植株再生、基因的遗传转化和筛选都已经形成较成熟的系统方法。抗逆育种是当前草坪草基因工程的研究热点,也是草业发展的一个重要方向。与传统育种相比,转基因育种具有周期短、可以定向改良物种的显著优点,但仍存在许多问题,需要建立稳定、高效的转化体系,准确选择目的基因,快速鉴定转入基因,提高转基因幼苗的大田成活率,以及建立育成品种的生态功能综合评价体系和转基因育种的成本核算。草坪在生态建设中的使用日益广泛,通过生物技术培育传统育种不能获得的优良草坪草具有良好的发展前景。

Genetic transformation technology in turfgrass breeding was quickly developed. Systemic methodology for Plant regeneration, genetic transformation and selection had been setup. Stress-resistance breeding has become the emphases of turfgrass genetic engineering,and it would be one of the important developing fields in grass industry. Comparing with the traditional breeding,transgenic breeding reveals the remarkable advantages because of its shorter experiment period and target plant directed improvement. However, the following problems should be resolved： effective transformation system, target-oriented genes, rapid transferred gene check, regenerate plant surviving rate in the field, as well as the integrative system for evaluating the ecological function and economic cost.