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中国农学通报 ›› 2017, Vol. 33 ›› Issue (16): 7-11.doi: 10.11924/j.issn.1000-6850.casb17030048

所属专题: 玉米

• 农学 农业基础科学 • 上一篇    下一篇

密度胁迫下不同玉米品种的植株性状差异性分析

王坚强,段宏凯,郑丽萍,张晓红,武艾卿,周忠宇,李金梅,李文清,穆艳芳   

  1. 山西省农业科学院高粱研究所,山西农业大学农学院,山西省农业科学院高粱研究所,山西省农业科学院高粱研究所,山西省农业科学院高粱研究所,山西省农业科学院高粱研究所,山西省农业科学院高粱研究所,山西省农业科学院高粱研究所,山西省农科院高粱所
  • 收稿日期:2017-03-08 修回日期:2017-04-06 接受日期:2017-04-21 出版日期:2017-06-08 发布日期:2017-06-08
  • 通讯作者: 郑丽萍
  • 基金资助:
    山西省科技厅星火项目“晋单84 示范与推广”(20151001-1)。

Difference Analysis of Plant Characters of Different Maize Varieties Under Density Stress

穆艳芳   

  • Received:2017-03-08 Revised:2017-04-06 Accepted:2017-04-21 Online:2017-06-08 Published:2017-06-08

摘要: [目的]旨在研究密度对不同玉米品种的植株性状的影响效果为育种与高产田的创建提供数据支撑。[方法]试验采用3种不同玉米品种,5种不同种植密度,随机区组设计,3次重复,并采用65cm宽等行距种植模式。[结果]从密度对品种的植株性状影响的角度看:密度对株高、穗位高以及雄花分枝数的影响未达显著性水平;A3品种在穗位高和雄花分枝数方面的抗逆性相对于其他品种在密度的胁迫下表现的强;雄花分枝数与品种的关系相对密切;品种对玉米的株高、穗位高和雄花分枝影响较密度大。[结论]穗位高与株高的关系不能一概而论,不同的品种有不同的影响效果。品种的选择对试验结果有显著性的影响。要想改良玉米的植株性状以协调群体关系应该从选择自交系抓起,选择株高适当、穗位高较低与雄花分枝较少的自交系是必要的。在宽等行距种植模式下,通过密度调节植株性状是不可取的。

关键词: 混播草坪, 混播草坪, 外观质量, 综合评价

Abstract: The aims are to study the effects of density on plant characters of different maize varieties, and provide a basis for breeding and high-yield field establishment. Three maize varieties‘[ Xieyu 3’(A1),‘Xieyu 4’(A2),‘Xianyu335’(A3)] were used as materials. Five planting densities and randomized block design with three repeats and 65 cm wide linewidth planting were used in this experiment. The results showed that plant heights of three maize varieties had no obvious change under five planting densities, ear heights of the three maize varieties had no significant differences, and the ear height of A2 was always higher than that of A1 and A3. The number of staminate flower branch of the three maize varieties had significant differences. Compared with that of A2 and A3, the significance of the staminate flower branch number of A1 was obvious. There was significant difference of the staminate flower branch between A2 and A3. Plant height and ear height had necessary connection. The plant height of A3 was distinctly higher than that of A1 and A2, but the ear height of A3 was distinctly lower than that of A1 and A2. The variety had more influence on plant height, ear height and the number of staminate flower branch than that of density. Varieties and planting model had significant influence on the experimental results. In order to improve plant characters to coordinate group relationship, we should choose the inbred lines with suitable plant height, lower ear height and lower staminate flower branch.

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