华北农学报

所属专题: 玉米

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冀西山区不同玉米品种苗期光合特性研究

冯伟1, 杨军芳1, 周晓芬1, 焦永刚2, 杜晓东3   

  1. 1. 河北省农林科学院农业资源环境研究所, 河北 石家庄 050051;
    2. 河北省农林科学院经济作物研究所, 河北 石家庄 050051;
    3. 河北省农林科学院农业信息与经济研究所, 河北 石家庄 050051
  • 收稿日期:2012-09-20 出版日期:2012-12-31
  • 通讯作者: 杨军芳(1975 - ), 男, 河北灵寿人, 副研究员, 主要从事土壤与植物营养研究。
  • 作者简介:冯伟(1977 - ), 男, 河北井陉人, 助理研究员, 硕士, 主要从事植物营养等方面的研究。
  • 基金资助:
    河北省科技厅项目(11231005D-1)

Study on Photosynthetic Characteristics of the Seedling Stage of Different Maize Hybrids in West Mountainous Regions of Hebei Province

FENG Wei1, YANG Jun-fang1, ZHOU Xiao-fen1, JIAO Yong-gang2, DU Xiao-dong3   

  1. 1. Institute of Agro-resources and Environment,Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051,China;
    2. Institute of Economic Crops,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050051,China;
    3. Institute of Agricultual Information and Economy,Hebei Academy of Agriculture and Forestry Sciences,Shijiazhuang 050051,China
  • Received:2012-09-20 Published:2012-12-31

摘要: 在冀西山区旱作玉米区选取6个品种研究玉米苗期的光合特性,分别测定了叶绿素含量、净光合速率(Pn)、光强-光合响应曲线(Pn-PAR)、蒸腾速率(Tr)、气孔导度(Gs)、胞间CO2浓度(Ci)和作物水分利用率(WUE)等指标,结果表明,不同品种苗期叶片叶绿素含量分为2组,叶绿素含量较高的品种为邢抗2号、承玉5号、泰玉2号、鲁单981,含量较低的品种为浚单20、郑单958。其中,组内品种叶绿素含量差异不显著,组间品种叶绿素含量差异达显著水平。在(2 526±23)μmol的自然光范围内,承玉5号的Pn分别比浚单20和郑单958高8.5%和8.4%,但不同品种间Pn差异不显著。不同品种的Pn、Tr、Gs和WUE随光量子通量密度(PPFD)的增加呈交错递增趋势,彼此间呈正相关关系。不同品种的Ci随PPFD的增加呈交错下降趋势。当PPFD为2 317μmol/(m2·s)时,各品种的Pn、Tr、Gs、Ci和WUE的排列顺序不完全一致。

关键词: 山区, 旱地玉米, 苗期, 光和特性

Abstract: Photosynthetic test of the seedling stage of maize selected six different maize varieties studied in westmountainous regions of Hebei Province. The paper explored their relationships by measuring the chlorophyll content,net photosynthetic rate ( Pn) , response curve of light intensity and photosynthesis ( Pn-PAR) , transpiration rate( Tr) , stomatal conductance ( Gs) , intercellular CO2 concentration ( Ci) and crop water use efficiency ( WUE) . Theresults showed that the chlorophyll contents of seeding leaf of the different varieties were divided into two groups. Onegroup that the chlorophyll contents of the varieties were higher was Xingkang 2, Chengyu 5, Taiyu 2 and Ludan 981 ,the other was Jundan 20 and Zhengdan 958. The chlorophyll contents in group were not significant, and the chlorophyllcontents between groups were a significant level. When natural light range was (2 526 ± 23 ) μmol /( m2· s) , Pn ofChengyu 5 is 8. 5% and 8. 4% higher than that of Jundan 20 and Zhengdan 958 respectively, but Pn differences didnot significant between different species. With photosynthetic photon flux density ( PPFD) increased , Pn, Tr, Gs andWUE of different maize varieties were the alternate increasing trend, and they were a positive relationship betweeneach other. Ci of different maize varieties were the alternate downward trend with PPFD increased. When PPFD was2 317 μmol /( m2· s) , Pn, Tr, Gs, Ci and WUE of different maize varieties does not completely consistent.

Key words: Mountainous region, Dryland maize, Seedling stage, Photosynthetic characteristics

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引用本文

FENG Wei, YANG Jun-fang, ZHOU Xiao-fen, JIAO Yong-gang, DU Xiao-dong. Study on Photosynthetic Characteristics of the Seedling Stage of Different Maize Hybrids in West Mountainous Regions of Hebei Province[J]. ACTA AGRICULTURAE BOREALI-SINICA, doi: 10.3969/j.issn.1000-7091.2012.z1.025.

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