1984年春,在叙永大安林场人足板杉木种子园开展了杉木杂交育种试验,获得3个父本、8个母本测交的F_1代种子,于1985年春在该场大安山林区进行育苗试验。本文根据试验结果,通过对苗高性状的遗传分析,讨论苗高变异的遗传方式在杉木遗传改良中的意义。 试材与方法 1.供试亲本及杂交设计:参试父本为川—60、76、102;母本为川—77、83、84、85、86、87、90、93。采用析因交配设计,共24个杂交组合。 In the spring of 1984, a crossbreeding experiment of Chinese fir was carried out in the Chinese fir plantation of Xuantong in Xuyong’an, Xuzhou, and F 1 seeds of three male parents and 8 female parents were obtained. In the spring of 1985, nursery experiments were carried out in Da’an Forest Region . Based on the test results, the genetic analysis of seedling height traits discussed the significance of the genetic mode of seedling height variation in genetic improvement of Chinese fir. Test materials and methods 1. The test parents and hybrid design: The test parent is Chuan -60,76,102; female parent Chuan -77,83,84,85,86,87,90,93. Using factorial mating design, a total of 24 hybrid combinations.