Maximum quantum yield of photosystem II and chlorophyll content in leaves of sour cherry cultivars challenged by drought
نویسندگان
چکیده
Photosynthesis is the basic process influencing crop productivity. It can be inhibited by drought. Seven sour cherry genotypes were challenged by drought to assess their photosynthetic efficiency in such conditions. All together with relative water content (RWC) as indicator of plant water status, maximum quantum yield of photosystem II (Fv/Fm) and chlorophyll content (Chl a+b) differentiated investigated cultivars in their susceptibility to drought stress. Results suggest that type OS of sour cherry cv. Oblačinska is the most tolerant of all investigated genotypes. Also, chlorophyll a fluorescence monitoring appeared to be a tool of choice to diagnose drought stress tolerance of sour cherry genotypes.
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