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小麦育种中,在单株点播世代对有关质量性状进行严格选择的基础上,如何对单株及其衍生系统的生产力做出比较准确的估量,是当前育种工作者十分关心的问题。近年来国外有关学者对禾谷类作物的经济系数即经济产量/生物产量×100％予以很大重视。Fisher(1975)研究了40个小麦基因型小区籽粒产量与宽行稀植主要经济性状之间的关系,结果经济系数优于单株产量(γ分别为0.54和0.31),以稀植主茎经济系数做为比较小区产量的根据时,
In wheat breeding, on the basis of strict selection of quality traits by on-demand generations, how to make a comparatively accurate estimation on the productivity of individual plants and their derived systems is a problem that breeders are currently concerned with. In recent years, foreign scholars concerned about the economic coefficient of cereal crops economic output / biological yield × 100% great importance. Fisher (1975) studied the relationship between the grain yield of 40 wheat genotypes and the main economic traits of broad-width sparse planting. The economic coefficient was superior to the single-crop yield (γ = 0.54 and 0.31, respectively) When the coefficient is used as a basis for comparing the yield of a plot,