Under drought, beside leaf water status, stomatal closure may be controlled by chemical signals from roots exposed to dry soils (Gowing et al., 1990; Thomas, 1997; Huang, 2000b).
Under drought, beside leaf water status, stomatalclosure may be controlled by chemical signals from rootsexposed to dry soils (Gowing et al., 1990; Thomas, 1997;Huang, 2000b).