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Growth and photosynthesis of Upland and Pima cotton: response to drought and heat stress

Author

Listed:
  • V. Hejnák

    (Department of Botany and Plant Physiology, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Ö. Tatar

    (Department of Field Crops, Faculty of Agriculture, Ege University, Izmir, Turkey)

  • G.D. Atasoy

    (Department of Field Crops, Faculty of Agriculture, Ege University, Izmir, Turkey)

  • J. Martinková

    (Department of Botany and Plant Physiology, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • A.E. Çelen

    (Department of Field Crops, Faculty of Agriculture, Ege University, Izmir, Turkey)

  • F. Hnilička

    (Department of Botany and Plant Physiology, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • M. Skalický

    (Department of Botany and Plant Physiology, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

Abstract

The effects of drought and heat stress on physiology of two common cotton species, Gossypium hirsutum L. (Upland) and G. barbadense L. (Pima) were investigated in this study. Four consecutive 28-day pot experiments were carried out in a fully controlled growth chamber under four temperatures (25, 30, 35 and 40°C), while two water treatments (well-watered and drought) were imposed for 10 days to both cotton species. Growth according to dry matter accumulation of G. barbadense was more limited by sole drought conditions (50%), whereas heat stress was more remarkable on growth of G. hirsutum (64%). Chlorophyll (Chl) a and b content were more temperature-sensitive in G. hirsutum than G. barbadense under well-watered conditions. The most noticeable decrease in drought-induced rates of photosynthesis rate (Pn), transpiration rate (E) and stomatal conductance (gs) were recorded under 35°C, although genotypic variation was found under 25°C. Higher water use efficiency was associated with higher temperature. Relative decrease in Chl a content, gs and maximal quantum efficiency of PSII exhibited by both species were distinctive physiological traits for heat and drought tolerance.

Suggested Citation

  • V. Hejnák & Ö. Tatar & G.D. Atasoy & J. Martinková & A.E. Çelen & F. Hnilička & M. Skalický, 2015. "Growth and photosynthesis of Upland and Pima cotton: response to drought and heat stress," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 61(11), pages 507-514.
    • Handle: RePEc:caa:jnlpse:v:61:y:2015:i:11:id:512-2015-pse
    DOI: 10.17221/512/2015-PSE
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    Cited by:

    1. Yaqian Zong & Chao Xu & Kai Zhou & Xinhui Duan & Bo Han & Chenggang He & Hua Jiang, 2023. "Effects of exogenous ascorbic acid on photosynthesis and xanthophyll cycle in alfalfa (Medicago sativa L.) under drought and heat stress," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 69(11), pages 487-499.
    2. Yaqian Zong & Chao Xu & Kai Zhou & Xinhui Duan & Bo Han & Chenggang He & Hua Jiang, . "Effects of exogenous ascorbic acid on photosynthesis and xanthophyll cycle in alfalfa (Medicago sativa L.) under drought and heat stress," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 0.

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