【摘要】 本试验用9个栽培红花品种为材料,进行单株花产量选择指数的研究。结果表明,通过分枝高、株高两性状进行相关选择,可有效提高单株花产量。用株高、分枝高、单株粒数、单株有效果球数、开花期、无效分枝数6个相关性状构成的选择指数,对单株花产量进行选择的效果最好。更多还原

【Abstract】 The experiments were carried ont with nine cultivars of sunflower being used as materials.The results showed that the yield of single-plant sunflower could be raised effectively by correlative selection of the height of plant and of their branch. The selection index, whichconsisted of 6 correiated characters, i.e. the height of plant and of their branch, the number of seeds per plant, the number of effective cone perplant?the number of ineffective branch, and anthesis, had the best effect when it was used for the selection of yield from single-plant flower.更多还原