近年来植物生物技术在作物改良中发挥着日益重要的作用。其中幼胚培养技术在作物杂交育种中对克服远缘杂交的胚败育、缩短杂交育种世代周期、加快育种速度是一种重要的技术手段。为加快向日葵育利进程、培育抗逆高产新品种,目前国内外育种工作者正在利用这一技术手段并已取得可喜进 In recent years plant biotechnology has played an increasingly important role in crop improvement. Among them, immature embryo culture technology is an important technical means to overcome embryo abortion in distant hybridization, shorten the generation cycle of hybrid breeding and speed up breeding. In order to speed up the sunflower breeding process and cultivate new varieties with high yield and resistance to high yield, breeders at home and abroad are using this technique and have achieved encouraging progress