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农学学报

农学学报 ›› 2017, Vol. 7 ›› Issue (9): 1-5.doi: 10.11923/j.issn.2095-4050.cjas16120021

所属专题： 玉米

• 农艺科学 生理生化 •    下一篇

玉米不同日龄花丝活性研究

李长建,张素娟,王海军,张志方,李风章,卢瑞乾,张金奎,朱自宽   

  1. 鹤壁市农业科学院,鹤壁市农业科学院,鹤壁市农业科学院,鹤壁市农业科学院,鹤壁市农业科学院,鹤壁市农业科学院,鹤壁市农业科学院,鹤壁市农业科学院
  • 收稿日期:2016-12-21 修回日期:2017-03-16 接受日期:2017-04-19 出版日期:2017-09-15 发布日期:2017-09-15
  • 通讯作者: 朱自宽 E-mail:wangliangfa
  • 基金资助:
    气象项目和河南省重大科技专项“要农作物重要基因挖掘与玉米新品种选育”(161100110500-0104)；公益性行业（气象）科研专项“黄淮海 “永优”（浚单）玉米系列品种气候适应性关键技术研究”(GYHY201406026)。

Study on Filament Vigor of Maize at Different Day Ages

  • Received:2016-12-21 Revised:2017-03-16 Accepted:2017-04-19 Online:2017-09-15 Published:2017-09-15

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摘要： 近年来，受高温天气影响，部分玉米品种出现不结实现象严重。本试验主要研究玉米新品种‘浚单518’、‘永优618’在当前气候条件下的花丝活力。通过对不同日龄花丝人工授粉，收获后统计2个品种的穗长、穗粗、秃尖、百粒重、穗粒数和穗粒重。随着花丝日龄的增大，两品种穗粒数和穗粒重先上升，在吐丝后2~4天达到最大值后下降；穗粗和百粒重呈下降趋势；两品种均在2天内完成花丝全部抽出苞叶。在对各性状的相关系数分析后发现穗粒数与穗粒重相关性最大。‘浚单518’、‘永优618’抽丝快，花丝活力持续时间长，在高温气候下，产量高，是耐高温型玉米新品种。

关键词: 火干扰, 火干扰, 不同烈度, 土壤有机碳, 土壤碳储量, 泰加林

Abstract: In recent years, under the influence of the high temperature, some maize varieties showed a serious phenomenon of no seed. In this experiment, we took two new varieties ‘Xundan 518’ and ‘Yongyou 618’ as our main materials, and we mainly studied the silk vigor in the current climate. By choosing silks of different day ages for artificial pollination, we took statistics on the ear length, the ear diameter, barren tip, 100 grain weight, spike grain number and spike grain weight after the harvest. With the increasing of the silk age, spike grain number and spike grain weight showed an upward trend at first, peaked from the second to fourth day, then declined slowly; the ear diameter and 100 grain weight showed a downward trend; all the silks put forth within two days. After the correlation coefficient analysis among all the traits, we found that the spike grain number had a maximal relationship with the spike grain weight. Because of the long duration of silk vigor and high yield under high temperature, ‘Xundan 518’ and ‘Yongyou 618’ are the new heat-tolerance varieties