Leaf water potential and sap flow as indicators of water stress in Crimson ?seedless? grapevines under different irrigation strategies - Shahidian, Shakib; Valverde, Pedro; Coelho, Renato; Agulheiro-Santos, A.C.; Vaz, Margarida; Rato, A.E.; Serrano, João Manuel; Rodrigues, Sara (2016)