Figure 3

The response of the electron transport chain of PSII, including the donor side (W _k ) (A), reaction center (RC _QA ) (B) and acceptor side (φ _Eo ) (C) parameters, of the leaves of three grape cultivars (‘Jingxiu’, ‘Riesling’ and spine grape) under the critical temperature (47°C). Each value represents the mean of five replicates, and the error bars represent ± S.E.