| Abstract: | Changes in pigments contents, leaf area, leaf dry mass per unit area (LMA), photosynthetic rate and chlorophyll a fluorescence were investigated in developing leaves of Fagopyrum dibotrys Hara. mutant. Anthocyanins transiently accumulate below the upper epidermis during leaf ontogeny of this mutant. Red leaves
possessed lower Chl content, LMA, photosynthetic rate and apparent carboxylation efficiency than green leaves. However, content
of anthocyanins declined and above mentioned parameters increased during further leaf development. In both red and green leaves,
chronic photoinhibition did not take place according to variable to maximum chlorophyll fluorescence ratio (Fv/Fm). Red leaves had higher non-photochemical quenching (NPQ) and higher PS 2 efficiency. |
