Adaptation Meteorology and Climate 9 Environmental Tolerance of Plants 6 Plant Physiology and Biochemistry 6 Plant Production 6 Climate change 5 Climatic changes 5 more ... Crops 5 Plants 5 Field Crops, (New March 2000) 4 Genetic improvement 4 Plant Breeding and Genetics 4 Plant Cropping Systems 4 Plant Ecology 4 Plant Water Relations 4 Stress 4 Stress response 4 Animal Ecology 3 Climatic change 3 Crop production 3 Crops and climate 3 Drought resistance 3 Food Economics, (New March 2000) 3 Global warming 3 Horticultural Crops, (New March 2000) 3 Insects 3 Molecular Biology and Molecular Genetics, (Discontinued March 2000, Reinstated and Revised June 2002) 3 Natural Disasters 3 Physiology 3 Plant Morphology and Structure 3 less ...