TY - GEN AU - Schäfer,C AU - Björkman,O TI - Relationship between efficiency of photosynthetic energy conversion and chlorophyll fluorescence quenching in upland cotton (Gossypium hirsutum L.) SN - 0032-0935 PY - 2013///1113 N1 - Publication Type: Journal Article UR - https://doi.org/10.1007/BF00391864 ER -