玉米自交系丹9046和C8605-2主要农艺性状的配合力研究

丹9046和C8605-2是基础来源完全相同的两个优良玉米自交系,分析其主要农艺性状配合力的结果表明:丹9046和C8605-2的表现各有所长.对于一般配合力,C8605-2的单株产量、百粒重、秃顶率、穗粗等4个性状都优于丹9046,而丹9046在出籽率、穗长和行粒数等3个性状上略高于C8605-2.而特殊配合力,应继续加强丹9046(C8605-2)×黄改系、丹9046(C8605-2)×旅大红骨等杂优模式的研究和利用。

Study on Combining Ability of Main Agronomic Traits of Maize Self-lines C8605-2 and Dan 9046

C8605-2 and Dan 9046 were two maize self-lines of the same basis source.To analysis their ten main agronomic characters,the results showed that C8605-2 and Dan 9046 each had their own strong points in combining ailities.The general combining abilities of C8605-2 was better than ones of Dan 9046 in yield per plant,100-grain weights,ear diameter and bear lip percentage,but in ear length,kernel number per row,and kernel weight percentage per ear,Dan 9046 was slightly better than C8605-2.The cross models,Dan 9046(C8605-2)×huanggaixi and Dan 9046(C8605-2)× Ludahonggu,must be studied.