AbstractIn this study, spinach plants were grown under atmospheric and low pressure conditions with constant O2 and CO2 partial pressures, and the effects of low total pressure on gas exchange rates were investigated. CO2 assimilation and transpiration rates of spinach grown under atmospheric pressure increased after short-term exposure to low total pressure due to the enhancement of leaf conductance. However, gas exchange rates of plants grown at 25 kPa total pressure were not greater than those grown at atmospheric pressure. Stomatal pore length and width were significantly smaller in leaves grown at low total pressure. This result suggested that gas exchange rates of plants grown under low total pressure were not stimulated even with the enhancement of gas diffusion because the stomatal size and stomatal aperture decreased.


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    Title :

    Short-term and long-term effects of low total pressure on gas exchange rates of spinach


    Contributors:
    Iwabuchi, K. (author) / Kurata, K. (author)

    Published in:

    Advances in Space Research ; 31 , 1 ; 241-244


    Publication date :

    2002-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Short-Term and Long-Term Effects of Low Total Pressure on Gas Exchange Rates of Spinach

    Iwabuchi, K. / Kurata, K. / International Council of Scientific Unions | British Library Conference Proceedings | 2003