玉米杂交种洛单668的选育与应用

Breeding and Application of Maize Hybrid Luodan 668

洛单668是洛阳市农业科学研究院以自选系L971为母本、自选系L157为父本组配而成的玉米单交种。各级试验示范结果表明:该品种具有高产、稳产、抗逆性强、生育期适中、品质优和适应性广等特点。2007-2009年参加河南省玉米区试(低密度组),分别比对照种浚单18增产7.8%、9.8%、10.5%。该品种为半马齿型,千粒重339 g,出籽率89.8%。粗蛋白质含量9.65%,赖氨酸含量0.325%,容重726 g/L。2010年通过河南省品种审定委员会审定。

Luodan 668 was a maize single cross hybrid bred by Luoyang Academy of Agricultural Sciences from the self-selecting female line L971 and male parent L157.The results from all levels of pilot demonstrations showed that the variety had characteristics of high and stable yield,strong resistance,moderate growth period,good quality and wide adaptability.The test result of maize low-density areas in 2007-2009 in Henan province showed increase of yield by 7.8%,9.8% and 10.5%,respectively.The variety was semi-dent type,with 1000-seed-weight of 339g and seed rate of 89.8%.The content of gross protein was 9.65%,lysine 0.325%,and the grain density was 726g/L.The hybrid was approved by Variety Approval Committee of Henan province in 2010.