PMC5145883_01
The phenotypes and physiological analyses of tea plants under CT, DT and CD. (A) The phenotypes of control (CK) and plants treated with gradually cold (CT) and drought (DT) stress individually or together (CD) after 15 days. (B) Leaf maximum photochemical quantum yield of PS II (Fv/Fm), (C) leaf relative electrolyte conductivity (REC), and (D) relative water content (RWC) were determined at six time-points (0, 3, 6, 9, 12 and 15 days) during CT, DT, and CD.
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F1
For combined CD stress, plants were simultaneously treated by gradually withholding water, and decreasing temperatures of acclimation and chilling for 15 days (Figure 1A).