对8个玉米自交系及其组配的10个杂交种的花丝吐丝动态、花丝数与雌穗小花数以及穗粒数进行统计分析，研究花丝数与雌穗小花数以及穗粒数的关系。结果表明，玉米杂交种与自交系花丝吐丝动态相似，但杂交种更集中，平均花丝数杂交种明显多于自交系，且变异幅度小。杂交种和自交系的花丝数与穗粒数均呈显著正相关，而杂交种的结实率明显高于自交系，且对环境有较高的适应性，稳产性也较好。

The relationship between the number of silks and the kernel number have important significance to the breeding . The number of silks of the eight inbred lines and ten hybrids crossed from them were tested . The analysis were done using the silking dynamics， the number of silks， the number of floret， the number of seed setting and the seed setting percentage . The results showed that there were similar silking dynamics in hybrids and inbred lines . Variability of the number of silks of hybrid was small and the average numbers of hybrids silks were much more than the silks of inbred lines . There was a significant correlation between the number of seed setting and the number of silks of hybrids and inbred lines . At the same time， the seed setting percentage of hybrid was significantly higher and more adjustable for environment than inbred lines .

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国家科技部农业科技成果转化资金项目“杂种玉米新品种繁育及种子加工技术集成与产业化”(2012GBZG100453)部分内容