Resistance of photosynthesis to high temperature in two bean varieties (Phaseolus vulgaris L.)

摘要: The increase in the basal fluorescence (F0) by increases temperature has been widely used as a screening technique to assess at which plant species suffer irreversible damage their photosynthetic apparatus. This method this study resistance extreme high two bean varieties, Barbucho (Chilean, non commercially bred) and Blue lake (commercially available UK). results suggested that varieties have similar threshold for 42–43 °C, however, 40 maintains its functions longer period of time compared Blue-Lake observed mean simultaneous measurement gas exchange room fluorescence. It seems likely inhibition °C is related instability Photosystem II.