Botanical adaptation to drought

摘要

Plant based indicators of water stress for irrigation scheduling. DROUGHTS ARE PERIODS of sub-maximal plant water potential and can be classified as being short-or long-term. Short droughts (ranging from hours to a day) tend to induce metabolic protective responses (usually reversible) but slowly induced, long-term droughts (ranging from several days to months) tend to induce potentially irreversible adaptive responses. Grapevines respond to seasonal water stress using either one of the two broad, non-exclusive, strategies, namely drought avoidance and drought tolerance (Salisbury and Ross, 1992).