ON CERTAIN PECULIARITIES OF PHOTOCHEMICAL ACTIVITY IN CHLOROPLASTS OF UPPER LEAVES OF WHEAT AND ITS ALLOCYTOPLASMIC HYBRIDS AT THE TILLERING AND FLOWERING STAGES СтатьяSEMENOV O.G., LYSENKO G.G.FIZIOLOGIYA I BIOKHIMIYA KULTURNYKH RASTENII. Том 19. 1987. С. 160-164