TY - JOUR T1 - Drought constraints on C4 photosynthesis:: stomatal and metabolic limitations in C3 and C4 grasses. JO - PHOTOSYNTHESIS RESEARCH PY - 2007/02/01 AU - Ripley B AU - Gilbert M AU - Frole K AU - Osborne C ED - VL - 91 IS - 2-3 SP - 226 EP - 226 Y2 - 2025/11/07 ER -