欧洲玉米种质BC8241Ht改良系主要经济性状的配合力分析

Combining Ability Analysis of Major Quantity Characters on the Improved Maize Lines from Europe Germplasm BC8241Ht

以欧洲玉米种质BC8241Ht直选系南21-3及其改良系为材料,按NCⅡ杂交模式,分析了直选系南21-3及其改良系的株高、穗位高、穗长、穗粗、秃尖长、每穗行数、每行粒数、百粒重和单株产量9个性状的配合力。结果表明,经过遗传改良后获得的改良系多数性状的一般配合力得以提高,少数性状变化相对较小,个别性状还有变劣的趋势;改良系单株产量的遗传增益明显提高。

The study regarded maize lines and its improved lines from Europe germplasm BC8241Ht as researched materials ,and analyzed combination ability of plant height, ear height, ear length, ear diameter, row number, row kernels, bald length, 100 grain weight, grain yield each plant about these lines by using NC Ⅱ cross model. The result indicated that general combination ability of most traits with the improved lines was increased, general combination ability of a few traits was small changed relatively, and the ones of individual trait was badly changed, after passing inheritance improvement. It was raised notably for the genetic gain of grain yield each plant with the improved lines.