Abstract:

The aim was to evaluate the parthenocarpy of eggplant which could be used for breeding. Physiological characteristics in leaves for parthenocarpic (D-11) and non-parthenocarpic (00-13) eggplant seedlings were studied at 5℃ low temperature stress under the control. The results showed that chilling index and the content of malondialdehyde (MDA) were much lower of in leaves parthenocarpic eggplant with the time of low temperature; net photosynthetic rate (Pn), light saturation point (LSP), photosynthetic rate at light saturation point, apparent quantum yield (AQY), CO2 saturation point (CSP), carboxylation efficiency (CE) and maximum RuBP regeneration rate were decreased; but light compensation point (LCP), CO2 compensation point (CCP) were increased; moreover intercellular CO2 concentration (Ci) were increased in the former stage(before 2 d), then decreased (after 2 d) in leaves of eggplant seedlings. The experiment suggested activities of photosynthetic apparatusin by eggplant seedling were weakened mainly by low temperature stress, better heat-resistant and much less chang of photosynthesis parameter in parthenocarpic eggplant.