The influence of temperature on photosynthesis of different tomato genotypes

W. Gosiewski, H.J.M. Nilwik, J.F. Bierhuizen

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    9 Citations (Scopus)


    Net photosynthesis and dark respiration from whole plants of various tomato genotypes were measured in a closed system. At low irradiance (27 W m−2) and low external CO2 concentration (550 mg m−3), net photosynthesis of 10 genotypes was found to vary between 0.122 and 0.209 mg CO2 m−2 s−1. Correlation was observed between net photosynthesis, net uptake on a daily basis (8 h photoperiod at 20°C and 16 h nyctoperiod at 10°C), specific leaf weight and leaf area ratio. At high irradiance (243 W m−2), high external CO2 concentration (1480 mg m−3) and ambient temperatures of 10, 18, 20 and 26°C, four genotypes were analysed. ‘F6 I.V.T.’ had the highest rate of photosynthesis at 10°C, while ‘Sonatine’ ranked high at 26°C. Dark respiration increased with temperature, except in the case of ‘Bonabel’ where the effect of temperature was slight.
    Original languageEnglish
    Pages (from-to)109-115
    JournalScientia Horticulturae
    Issue number2
    Publication statusPublished - 1982


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