草地学报

草地学报 ›› 2017, Vol. 25 ›› Issue (2): 424-428.DOI: 10.11733/j.issn.1007-0435.2017.02.030

• 研究专报 • 上一篇    下一篇

高CO2浓度下狗尾草与谷子光合特性比较研究

冯文新1, 宗毓铮1, 郝兴宇1, 任小云1,2, 翟思龙1,3, 韩渊怀1   

  1. 1. 山西农业大学农学院, 山西 太谷 030801;
    2. 山西农业大学园艺学院, 山西 太谷 030801;
    3. 南京农业大学农学院, 江苏 南京 210095
  • 出版日期:2017-04-15 发布日期:2017-06-25
  • 通讯作者: 宗毓铮,E-mail:zongyuzheng@163.com
  • 作者简介:冯文新(1960-),女,硕士,高级实验师,主要从事作物生理学研究,E-mail:125047480@qq.com
  • 基金资助:

    国家自然科学基金（31501276）；山西农业大学科技创新基金（2014018）；博士引进人才项目（2013YT05）；山西省科技攻关项目（20150311006-2）资助

Effects of Elevated CO2 on Photosynthetic Capacity of Setaria italica and Setaria viridis

FENG Wen-xin1, ZONG Yu-zheng1, HAO Xing-yu1, REN Xiao-yun1,2, ZHAI Si-long1,3, HAN Yuan-huai1   

  1. 1. College of Agriculture, Shanxi Agricultural University, Taigu, Shanxi Province 030801, China;
    2. College of Horticulture, Shanxi Agricultural University, Taigu, Shanxi Province 030801, China;
    3. College of Agriculture, Nanjing Agricultural University, Nanjing, Jiangsu Province 210095, China
  • Online:2017-04-15 Published:2017-06-25

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摘要：

比较了开顶式生长室中不同CO2浓度（380 ppm与560 ppm）下狗尾草（Setaria viridis）与谷子（Setaria italica）光合作用的长期适应性。高浓度CO2下，拔节与抽穗期狗尾草Pn显著高于谷子，且中午前后升高显著。高浓度CO2下狗尾草抽穗期主要叶绿素荧光参数（ΦPSII，qP和ETR）、收获期单株茎叶生物量、籽粒产量提高幅度均高于谷子。总之，高浓度CO2对狗尾草光合能力的提高作用显著大于谷子，未来可能对谷子生产造成较大影响。

关键词: CO2浓度升高, 狗尾草, 谷子, 光合作用

Abstract:

In this study, the gas exchange parameters, chlorophyll fluorescence parameters and grain yield of foxtail millet and green millet grown in the CO2 open top chambers (380 or 560 ppm) were investigated. During elongation and heading stages, the elevated atmospheric CO2 increased Pn more in green millet than in foxtail millet, especially during 10:00-14:00. Meanwhile, the e[CO2] increased the ΦPSII, qP and ETR for green millet but not for foxtail millet. In the heading stage, the e[CO2] down-reguated Pn in green millet but not in the foxtail millet. In the harvest stage, the e[CO2] increase panicle weight, grain weight per panicle and shoot biomass more in green millet than in foxtail millet. In conclusion, the e[CO2] contributed to improve photosynthesis for green millet more than for foxtail millet, which may affect the foxtail millet production in future.

Key words: Elevated CO2, Setaria viridis, Setaria italica, Photosynthesis

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