前言为了育成品种,研制了许多不同的、适应育种目标的方法,而这里讲的是利用雄性不育性一代杂种育种。烟草一代杂种,以前除局部地区外,栽培的不多,但是,最近我国对一代杂种育种进行了研究,所以介绍其现状。一代杂种一代杂种就是由两个品种间杂交所得到的杂种第一代(F_1),直接利用这个杂种就是一 INTRODUCTION In order to breed varieties, a number of different approaches to breeding objectives have been developed, but here we describe the use of male sterile breeding. Tobacco hybrids, previously except in some areas, the cultivation of small, but recently, China has studied the generation of hybrid breeding, so introduce the status quo. The first generation of hybrids is the first generation (F_1) of hybrids obtained from the crossing of two varieties. The direct use of this hybrid is one