, Volume 53, Issue 2, pp 306–311 | Cite as

Influence of drought stress on the photosynthetic characteristics and dry matter accumulation of hybrid millet

  • H. B. Lu
  • Y. M. Qiao
  • X. C. Gong
  • H. Q. Li
  • Q. Zhang
  • Z. H. Zhao
  • L. L. Meng
Original Papers


In order to elucidate the drought resistance and high-yield mechanism of hybrid millet, we studied the influence of drought stress on the photosynthetic characteristics and dry matter accumulation. Our results revealed that drought stress caused lesser reduction in the net photosynthetic rate, maximal quantum yield of PSII photochemistry, excitation energy capture efficiency of PSII reaction centers and in the yield of hybrid millet compared to normal millet. When drought stress occurred in the jointing stage, the percentage decrease of P N, Fv/Fm, Fv′/Fm′, and the yield of Zhangzagu3 cultivar compared to control were 27.9%, 2.6%, 25. 5%, and 1.9%, respectively, the percentage decrease of Zhangzagu5 were 37.6%, 3.9%, 28.3%, and 16.7%, respectively, the decrease percentage of Datong29 were 60.1%, 6.4%, 4%, and 23.4%, respectively. Hybrid millet showed the similar reduction in the parameters referred above, when drought stress occurred at the heading stage, but the percentage decrease was much higher than that at the jointing stage. We concluded that hybrid millet showed higher drought resistance than normal millet.

Additional key words

chlorophyll fluorescence gas exchange Setaria italica (L.) Beauv 







drought stress


transpiration rate


maximal quantum yield of PSII photochemistry


excitation energy capture efficiency of PSII reaction centers


stomatal conductance


leaf area


normal millet cultivar


net photosynthetic rate


photochemical quenching coefficient


total leaf area


instantaneous water-use efficiency






actual photochemical efficiency of PSII


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Copyright information

© The Institute of Experimental Botany 2015

Authors and Affiliations

  • H. B. Lu
    • 1
  • Y. M. Qiao
    • 1
  • X. C. Gong
    • 1
  • H. Q. Li
    • 3
  • Q. Zhang
    • 1
  • Z. H. Zhao
    • 2
  • L. L. Meng
    • 1
  1. 1.Agriculture and Forestry Technologically CollegeHebei North UniversityZhangjiakouChina
  2. 2.Zhangjiakou Academy of Agricultural SciencesZhangjiakouChina
  3. 3.Department of Mathematics and PhysicsHebei Institute of Architecture and Civil EngineeringZhangjiakouChina

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