旅大红骨种质的利用潜力评价及改良分析

Utilization Potential and Improvement Evaluation of Lvda Red Cob Group Inbred Lines

以7个旅系与2个外杂选系组配的14个组合和对照种郑单958为材料,采用随机区组设计,3次重复试验,分析由旅系组配的组合产量、抗性、农艺性状和考种性状与对照间的差异。结果表明,旅系的产量一般配合力较高,抗性、穗粗和穗长等方面优于对照,但耐密性、抗倒性、封顶性、子粒深度、含水量和出籽率等方面与对照还有差距,且生育期长于对照。

Fourteen maize hybrids which hybrid in seven Lvda red cob group inbred lines with two American breeding hybrids of maize inbred lines and Zhengdan958 were used by randomized block design of three repeated tri als. The yield, resistance, agronomic and ear traits were made with contrast check hybrid in the study. The results showed that the yield general combining ability, resistance, ear diameter and ear length of Lvda red cob group inbred lines were better than CK; but plant density, lodging resistance, capping, kernel length, moisture content and shelling percentage were lower; growth period was longer than CK.