The effect of fluctuating light intensity on plant growth.

Published online
03 Jan 1970
Content type
Journal article
Journal title
Journal of Applied Ecology

Huxley, P. A.

Publication language


Young plants of 5 species were grown in pots for 8-16 days in daylight under shades constructed of 6-mm strips. The shades were fixed or were made to move laterally so as to subject any part of a leaf to alternate conditions of high and low light intensity for cycles of 86, 16 or 2.2 sec. Differences between treatments were almost absent in cotton and were <5% for white mustard. Tobacco grown under 'rapidly' moving shades produced 8.5% more DM than under 'slowly' moving shades. Plants under 'slowly' moving shades always yielded less than under fixed shades but the difference was less than 5% except in tobacco. None of the treatment differences were statistically significant.-R.B.

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