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中国农学通报

中国农学通报 ›› 2013, Vol. 29 ›› Issue (36): 219-223.doi: 10.11924/j.issn.1000-6850.2012-4026

所属专题： 生物技术； 玉米

• 农学 农业基础科学 • 上一篇    下一篇

细胞分裂素对玉米产量性状的影响

李小艳 许晅 朱同生 郭月 夏凯   

  • 收稿日期:2012-12-13 修回日期:2013-02-02 出版日期:2013-12-25 发布日期:2013-12-25

Effects of Exogenous Cytokinin on Maize Yield Characteristics

  • Received:2012-12-13 Revised:2013-02-02 Online:2013-12-25 Published:2013-12-25

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摘要： 为探索细胞分裂素对玉米产量性状的影响，将不同质量浓度的细胞分裂素于玉米的抽雄时期做两次喷雾处理。结果发现，在喷药数天后，玉米单穗鲜重都出现先上升后稳定趋势，细胞分裂素处理的玉米单穗鲜重显著优于清水对照；与对照相比，细胞分裂素处理的玉米植株比较高大，茎秆粗壮，穗位叶的叶面积明显增大，叶绿素和可溶性蛋白的含量也显著增加，产量明显上升。其中，8 mg/L激动素的效果最好，使玉米的株高提高10.3%，穗位节茎粗增加14.5%，同时，可使成熟期玉米叶绿素含量提高11.9%，可溶性蛋白含量增加49.9%，最终使单穗粒数增加32.9%，千粒重增加23.8%。这表明，细胞分裂素使玉米延缓衰老，抗倒伏能力增加，对玉米产量也具有一定的促进效应。

关键词: 万泉河流域, 万泉河流域

Abstract: In this experiment, the effect of cytokinin on maize yield characteristics by spraying of exogenous different concentrations of cytokinin at heading was studied. The results indicated that, fresh weight of single ear maize showed stable after the first rise, compared with the control, which was significantly better; maize plants of cytokinin treatment were relatively taller, and had thicker stems, while the areas of ear leaves were larger, and chlorophyll and soluble protein content were also significantly increased, and productions too. And the best treatment was 8 mg/L cytokinin, compared with control, plant height, the ear nodal width increased by 10.3%, 14.5%, respectively. In addition, chlorophyll and soluble protein content improved by 11.9%, 49.9%. Therefore, kernle number per plant and 1000-kernel weight increased by 32.9% and 23.8%. These suggested that cytokinin could delay leaf senescence of maize and enhance lodging resistance and boost the field.