engleski

Time-resolved chlorophyll fluorescence measurements in maize reveal different patterns of responses to increasing temperatures among maturity groups

Early maturing maize hybrids are expected to enter the senescence and reach maturity more quickly, while in later maturity hybrids this process is stretched over a longer period of time. The aim of this study was to analyze the photosynthetic efficiency of maize hybrids belonging to different maturity groups in time- resolved manner. Chlorophyll fluorescence (ChlF) was continuously measured from 07:00 to 14:00 on 48 maize hybrids in two experiments. Our results indicate that early- maturing hybrids from groups FAO 300 and 400 display more sensitive reactions to high temperatures and lower yields compared to late maturing ones.

maize ; chlorophyll fluorescence ; heat ; maturity ; adeptness

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