摘要
通过对18个极早熟玉米新品种大田筛选研究试验,旨在为宁夏南部山区旱地新品种选育提供理论依据。[方法]自抽雄开始,每隔5 d记载不同品种抽雄时间直到籽粒成熟,探究不同品种抽雄早晚与成熟时期、株高、穗位、穗部性状和产量之间关系。[结果]研究表明抽雄早晚对品种的株高、叶片数、穗位高没有明显影响,但对品种产量有一定影响,由回归模拟曲线可知7月25日是宁南山区旱地品种抽雄的最适宜时期,过早或过晚会对品种产量产生明显影响。[结论]抽雄早晚对玉米品种选育有一定参考价值,但还要考虑品种本身基因型、气象因子、土壤环境、人工管理措施等。
[Objective] The field screening experiment and study with 18 very earlier maturity maize new varieties were conducted aiming to provide theoretical basis for the dry-land new varieties breeding in southern mountainous area of Ningxia [Method] Since the start of tasseling, the tasseling times of different varieties were recorded once every 5 days until the maturity time to explore the relationships between the tasseling times of different varieties and the mature period, plant height, ear position, panicle traits and yield. [Results] The results showed that the earlier or later tasseling had no significant effect on the plant height, leaf number and ear height of the varieties, but had certain influence on the yield. It was known by the regression simulation curve that July 25 was the most appropriate tasseling time of the dry-land varieties, and too early or too late a tasseling would obviously influence the yields of the varieties. [Conclusion]The earlier or later tasseling has a certain reference value for maize breeding, but the own genotype of the variety, climatic factors, soil environment and artifi- cial management measures, etc. should also be considered
出处
《宁夏农林科技》
2015年第11期4-5,8,共3页
Journal of Ningxia Agriculture and Forestry Science and Technology
关键词
玉米
抽雄早晚
穗部
产量
Maize
Tasseling sooner or later
Panicle
Yield
