对20个小麦杂交高代材料13个农艺性状考察结果的统计分析表明,株高、穗下节长度、穗长、每穗结实小穗数和千粒重五个性状比较稳定,变异系数均在10%以下,选择时应从严掌握。其余性状变异系数较大,选择可适当放宽。小麦杂交高代决选时应以单株穗数、单株粒数、千粒重和穗粒重为重点,选择单株穗数多、穗粒数多、千粒重较高的重穗型材料,其他性状也应适宜。 The statistical analysis of 13 agronomic traits in 20 hybrid wheat progeny showed that the plant height, length of panicles, spike length, number of spikelets per panicle and 1000-grain weight were relatively stable, and the coefficients of variation were all within 10% The following, the choice should be strictly controlled. The coefficient of variation of the remaining traits is larger, the choice may be appropriate to relax. When selecting the elite hybrid wheat, the number of panicle per plant, grain number per plant, grain weight per plant and grain weight per plant should be the key point. The panicle type with more spikes per plant, more grains per spike and heavier grain weight, Should also be appropriate.