In vivo chlorophyll forms and pigment protein complexes in sycamore (Acer pseudoplotanus) cotyledons during germination in the light and in the dark

Changes in fluorescence emission and excitation spectra of sycamore (Acer p seudoplatanus L.) cotyledons and chlorophyll-protein complexes were studied . In the seed cotyledons, chlorophyll is preserved in long-wave form (F-max 735) but, during germination, forms with F-max 685 and 740 nm appeared in both the light and dark. Excitation maxima appeared at 440, 470 and 490 nm. A relation was shown between chlorophyll forms and reaction centers of PS I, PS II and LCH II complexes. The results obtained indicated that the chlo rophyll forms and pigment-protein complexes of cotyledons of sycamore seedl ings germinated in light are similar to those of leaves, while those germin ated in the dark are different.