Study on characteristics of photosynthetic membranes in Yangmai No.5 (T.aestivum L.) flag leaves during photosynthetic functional decline process Change in chlorophyll-protein complexes of hybrid wheat in different developmental periods Comparison on Photochemical Characteristics and Polypeptide Components of Photosystem II in Hybrid Rice Shanyou 63 and Its Parents Changes in Characteristics of PS Ⅰ from Flag Leaves of Yangmai No. 5 (Triticum aesti v um L.) under Light-temperature Stress during Photo-synthetic Functional Decline Process A Comparative Study on PSⅡ Light Harvesting Chlorophyll a/b Protein Complexes Between Spinach and Cucumber