丹玉自交系在我国玉米育种和生产中的地位与作用

Important Situation and Effect of Danyu Self-bred Lines in the Maize Breeding and Production in China

优良玉米自交系自330、E28和丹340等为代表的丹玉自交系 ,是中国玉米育种和生产中最重要的骨干材料。它们具有配合力高、抗逆性强、适应性广、综合农艺性状优良的突出特点 ,因而被全国各地广泛应用。自70年代以来 ,由丹玉自交系组配的杂交种 ,经审定、鉴定的就有142个 ,合计种植面积约8×107hm2 ,年种植面积7×106hm2。由此 ,确立了旅大红骨种质类群和Lancaster类群中自330亚群的重要地位 ,已成为中国玉米重要的种质来源 ,促进了中国玉米育种研究的快速发展 。

The superior maize self-bred lines of Danyu series such as Zi330,E28 and Dan340, etc, are the most important key materials for the maize breeding and production in China. These lines were used extensively in all over China because they have high general combining abilities,high resistance to adversities,wide adaptabilities and the superior comprehensive agronomic properties.Since 1970,142 verified hybrids which were combined by Danyu self-bred lines have been planted for about 80 million hectares altogether in China and the biggest planting area per year was above 667 hectares. Therefore,it is clear that Ludahonggu Group and Zi330 Sub-group of Lancaster have played the most important roles and have become the main sources of the maize germplasms of China. Danyu self-bred lines have promoted the development of maize breeding and have contributed very much to the maize production in China.