摘要
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.
出处
《甘肃农业科技》
2013年第8期10-13,共4页
Gansu Agricultural Science and Technology
基金
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
关键词
玉米
花丝数
雌穗小花数
穗粒数
自交系
杂交种
Corn
Filaments number
Ear florets
Kernel number
Inbred lines
Hybrids
