ACTA AGRICULTURAE BOREALI-SINICA ›› 2014, Vol. 29 ›› Issue (S1): 155-161. doi: 10.7668/hbnxb.2014.S1.031

Special Issue: Corn

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Effect of Arbuscular Mycorrhizal Fungus on Morphology, Growth and Photosynthetic Characteristics in Maize Seedlings under Low Temperature Stress

CHEN Xiao-ying1,2, SONG Feng-bin1, ZHU Xian-can1, SUN Lu-ying1,2, MA Fu1,2, LIU Sheng-qun1   

  1. 1. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2014-09-26 Published:2014-12-28

Abstract: For understanding the effects and effect mechanisms of arbuscular mycorhizal(AM) fungus on low temperature tolerance of maize.The effect of arbuscular mycorhizal(AM) fungus inoculation on morphology,growth and photosynthetic characteristics of maize seedlings was studied in pot culture under low temperature stress.Study showed that under low temperature stress,compared with non AM-inoculated maize plants,AM-inoculated maize plants had larger leaf size and higher aboveground biomass.Low temperature stress decreased the photosynthetic rate(Pn),stomatal conductance(Gs) and transpiration rate(Tr) of maize leaves,but increased the intercellular CO2 concentration(Ci).The Pn,Gs and Tr of AM-inoculated maize leaves were higher than those of non AM-inoculated plants,and the Ci of AM-inoculated maize leaves was lower than that of non AM-inoculated plants.Under low temperature stress,the primary fluorescence(Fo) was increased,while variable fluorescence(Fv),maximal fluorescence(Fm),maximum photochemical efficiency(Fv/Fm) and potential photochemical efficiency(Fv/Fo) were decreased.Without regard of temperature,compared with AM-inoculated maize plants,AM-inoculated plants had higher Fv,Fm,Fv/Fm and Fv/Fo.The results indicated that low temperature could induce serious damage of growth and photosynthetic physiology of maize seedling;AM inoculation could enhance low temperature tolerance of maize seedling by protective and facilitated effects on maize plants to promote its growth,and protective effect on photosynthetic system to improve its photosynthetic capacity.

Key words: Low temperature stress, Arbuscular mycorrhiza, Chlorophyll fluorescence, Photosynthesis

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Cite this article

CHEN Xiao-ying, SONG Feng-bin, ZHU Xian-can, SUN Lu-ying, MA Fu, LIU Sheng-qun. Effect of Arbuscular Mycorrhizal Fungus on Morphology, Growth and Photosynthetic Characteristics in Maize Seedlings under Low Temperature Stress[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(S1): 155-161. doi: 10.7668/hbnxb.2014.S1.031.

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