Photosynthesis and Photorotection in Amorphophallus konjac and Amorphophallus xiei Grown at a Light Gradient Characteristics of photosynthesis and light energy partitioning in Amorphophallus xiei grown along a light-intensity gradient. Steady-state and dynamic photosynthetic performance in the shade-demanding plant Amorphophallus xieiunder different levels of growth irradiance