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中国农学通报 ›› 2019, Vol. 35 ›› Issue (22): 6-9.doi: 10.11924/j.issn.1000-6850.casb19030068

所属专题: 水稻

• 农学 农业基础科学 • 上一篇    下一篇

施肥、赤霉素“920”对水稻种子裂颖影响的研究

孙小文, 刘延斌   

  1. 中国种子集团有限公司
  • 收稿日期:2019-03-17 修回日期:2019-06-18 接受日期:2019-06-24 出版日期:2019-08-13 发布日期:2019-08-13
  • 通讯作者: 孙小文
  • 基金资助:
    无基金

Fertilization and Gibberellin“920”: Effect on Glume Dehiscence in Rice Seeds

  • Received:2019-03-17 Revised:2019-06-18 Accepted:2019-06-24 Online:2019-08-13 Published:2019-08-13

摘要: 为了探索施肥和赤霉素“920”对水稻种子裂颖的影响。以水稻品种‘旌优127’的双亲作为试验材料,开展追肥、喷施叶面肥、喷施“920”等试验研究。结果发现,孕穗期追肥时,适当的减施氮肥、或者增施磷钾肥均可显著降低裂颖发生的风险,增施磷钾肥对降低裂颖的效果优于减施氮肥的效果。破口期叶面喷施硼肥或钾肥均可显著降低裂颖发生的风险,其中叶面喷施硼肥的效果优于喷施钾肥,既喷施硼肥又喷施钾肥的效果更好。喷施“920”过早、或者过晚均显著加重裂颖,其中喷施偏早的影响更显著。对‘旌优127’制种而言,抽穗20%时每hm2喷施300 g“920”是比较理想的选择。

关键词: 胰核糖核酸酶, 胰核糖核酸酶, 适应性进化, 基因重复, 功能分化, 肠发酵, 功能多样性

Abstract: The paper aims to explore the influence of fertilizing and gibberellin 920 on glume dehiscence. The parents of rice variety Jing you 127 were chosen as tested materials. The experimental treatments included topdressing, spraying foliar fertilizer and spraying gibberellin 920. It was found that the proper decreasing of N fertilizer or proper increasing of P K fertilizer at booting stage significantly brought down the risk of glume dehiscence. The effect of increasing of P K fertilizer was more significant than decreasing of N fertilizer. Both measures of spraying boric or K fertilizer at rupturing stage significantly decreased the risk of glume dehiscence. The effect of boric fertilizer was better than K fertilizer. In addition, the effect of both boric and K fertilizer application together was much better. Early or later gibberellin 920 spraying increased the rate of glume dehiscence. The influence of early spraying was more obvious. It was an ideal selection for Jing you 127 to spray 300g gibberellin 920 per hectare when 20 percent panicles were in heading.