论文部分内容阅读
目前,轮回选择普遍应用于玉米优良群体的选育。由于新群体可作为栽培品种或自交系选育的基础材料,因此其平均生产性能和配合力就显得重要。通常采取对籽粒产量的直接选择和丰产性的间接选择来改进籽粒产量。据报道,丰产的选择已获得了更高的籽粒产量增益。与对籽粒产量的间接选择相比,丰产性的选择对植株类型的影响常常是十分需要的
At present, the reincarnation selection is generally applied to the breeding of elite maize populations. Since the new group can be used as a basic material for breeding cultivars or inbred lines, its average production performance and combining ability become important. Generally, direct selection of grain yield and indirect selection of high yield are used to improve grain yield. It has been reported that high-yielding options have gained higher grain yield gains. The impact of high yielding options on plant type is often very much needed compared to the indirect selection of grain yield