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以增强适应性为主线,以优异种质引进、创新与利用为基础,坚持“大规模、多地点和持续性”的育种思路,实施多地点、高密度、少施肥和少灌水的技术路线,选育出陕单609玉米品种。陕单609具有高产稳产、耐密植、抗旱、品质优良、产量潜力大和适应性广的特点。分析陕单609玉米品种的选育背景和育种过程,总结玉米自交系91227和陕单609玉米杂交种的特征特性。玉米品种改良要重视外来玉米种质的利用,强化育种环境的选择压力,创新玉米品种的推广方式。
To enhance the adaptability as the main line, based on the introduction, innovation and utilization of excellent germplasm, we will adhere to the breeding concept of “large-scale, multi-site and sustainable” and implement multi-site, high density, less fertilizing and less irrigation technologies Route, breeding single Shaan 609 corn varieties. Shandan 609 has the characteristics of high and stable yield, good tolerance to close planting, drought resistance, high quality, large yield potential and wide adaptability. The breeding background and breeding process of Shandan 609 maize variety were analyzed, and the characteristics of hybrid maize inbred lines 91227 and Shandan 609 were summarized. The improvement of maize varieties should pay attention to the utilization of alien maize germplasm, strengthen the selection pressure of breeding environment and innovate the promotion methods of maize varieties.