嫁接在杨树远缘杂交育种上的应用研究

Application of Crafting on Distant Hybridization of Breeding for Populus L.

为了在吉林省西部地区选育出耐盐碱性强,又能无性扦插育苗进行快速繁殖的杨树新品种,选用了白杨派的银新杨作母本与青杨派的小叶杨为父本进行远缘杂交育种,但两派之间杂交不亲和。为解决这一问题,进行了先嫁接再杂交的育种方法。试验表明,此方法在一定程度上提高了远缘杂交的结实率,而且杂种苗具有明显的父母本双亲的性状,为杨树新品种培育开辟了新的途径。

In order to selecting the new variety of poplar which have strong saline alkaline tolerance and can be rapidly propagated by use of asexual cutting propagation, the distant hybridization of breeding has been done with Populus alba x P. alba pyramidalis as female parent and Populus alba x P. alba pyram idalis as male parent, but the hybridization isn＇t affinitive. For solving this problem, the breeding method is chosen to craft firstly and then hybridize. The test shows that this method can raise the seed setting rate of distant hybridization to some extent, and the hybrid seedling have the obvious parental characters, which ooen a new way for variety breedin~ of t^on]ar.