THE FUNCTION OF PHYTOCHROME IN THE NATURAL ENVIRONMENT–V. SEASONAL CHANGES IN RADIANT ENERGY QUALITY IN WOODLANDS | Zendy

Tasker R. | Zendy; Smith Harry | Zendy

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THE FUNCTION OF PHYTOCHROME IN THE NATURAL ENVIRONMENT–V. SEASONAL CHANGES IN RADIANT ENERGY QUALITY IN WOODLANDS

Author(s) -

Tasker R.,

Smith Harry

Publication year - 1977

Publication title -

photochemistry and photobiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.818

H-Index - 131

eISSN - 1751-1097

pISSN - 0031-8655

DOI - 10.1111/j.1751-1097.1977.tb07519.x

Subject(s) - photosynthetically active radiation , woodland , phytochrome , beech , atmospheric sciences , environmental science , radiant energy , radiation , shading , growing season , photosynthesis , botany , physics , biology , optics , red light , art , visual arts

. The spectral distribution of radiant energy on the floor of three typical English woodlands (birch, beech and oak) has been monitored throughout the whole growing season. The results are presented in terms of the changes in the ratio of the photon fluxes at 660 nm and 730 nm (τ) and in the photosynthetically active radiation (PAR). The results are discussed in relation to the hypothesis that the role of phytochrome is to detect changed light quality due to mutual shading and to direct development accordingly.

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