Development of rapid floral induction technique for trees by production of flowering hormone through root system.

树木在开花前需要长达数年至数十年的幼树期。在杂交育种中，有效的诱导花方法可以有效缩短育种周期。本研究以根生农杆菌为基因转移载体，以烟草为模式植物，建立了一种通过根系诱导产生开花激素的方法。我们已经成功地迅速诱导开花，而没有对地上部分进行遗传转化。

Trees require a long juvenile phase for years to decades before flowering. An efficient method for floral induction is effective in shortening the breeding period in crossbreeding. In the present study, we developed a technique for producing flowering hormone through root system that induced in a cutting by Agrobacterium rhizogenes as a gene transfer vector, and Nicotiana plants were used as model plants. We have succeeded in rapidly inducing flowering without genetic transformation of aerial parts.