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Melatonin (MT), a tryptophan derivative, plays an important role in the function and survival of organisms. To better understand the role of MT in cold tolerance, the melon (Cucumis melo L.) were sprayed with various concentrations of MT (0, 50, 100, 200 or 400 μM), exposed to cold stress (day/night temperature of 12/6 °C) for 7 d, and then returned to optimal conditions (28/18 °C) for 7-d recovery...
This study was carried out to better understand the role of 24-epibrassinolide (EBR) in thermotolerance of melon (Cucumis melo L.). The melon seedlings were pretreated with various concentrations of EBR (0, 0.05, 0.1, 0.5, 1.0, and 1.5 mg dm−3) as foliar spray and then exposed to a high temperature (HT) stress. Exogenous EBR (0.5–1.5 mg dm−3) alleviated HT-caused growth suppression. In parallel, 1...
The temperature dependences of net photosynthetic rate (PN), stomatal conductance (gs), transpiration rate (E) and dark respiration (RD) of four neem (Azadirachta indica A. Juss) provenances of 11 years old were measured in three seasons of 2006 in the dry-hot valley area of southwest China under field conditions. The results indicated that PN of four neem provenances showed clear parabolic responses...
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