玉米测验种类别的比较研究

试验对玉米三类测验种（综合种、单交种、自交系）测定待测系一般配合力（ＧＣＡ）的测定效果进行了比较研究。结果表明，在测定产量ＧＣＡ时，测验种的类别是筛选优良测验种的一个重要参考指标。综合种是较优良的测验种类别，它们基本上都可单独用作测验种；单交种、自交系经严格筛选也能选到优良测验种。在测定农艺性状ＧＣＡ时一般不必对测验种作严格筛选。

COMPARATIVE STUDY ON TESTER CLASSES IN MAIZE

Effects of three types of tester in maize which evaluated general combining ability(GCA) of the testing-iine were strdied comparatively.The results indicated that aester classes were an inportant reference inder for screeing superiou tester when GCA of yield was tesed.The syn-thetic variety was tested.The synthetic variety was a sort of good teser and generally could be used alone as tester.Superior tester could be obtained from the serious choice of interlinear hybrid and inbreed.Generally,the esrious chice for tester wasn't necessary when the GCA of the agricultural characters was tested.