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United States Department of Agriculture

Agricultural Research Service

Title: Light quality affects flowering in short-day ‘Strawberry Festival’ strawberry

Authors
item Takeda, Fumiomi
item Glenn, D Michael
item Stutte, G. - KENNEDY SPACE CTR, FL

Submitted to: HortScience
Publication Type: Abstract Only
Publication Acceptance Date: April 30, 2008
Publication Date: July 19, 2008
Citation: Takeda, F., Glenn, D.M., Stutte, G. 2008. Light quality affects flowering in short-day ‘Strawberry Festival’ strawberry. HortScience. 43:1146.

Technical Abstract: The effect of red light (600-700 nm) directed at the crowns of 'Strawberry Festival' strawberry transplants maintained under long-day photoperiod in August on flower bud induction was investigated. When the July-plugged transplants were retained in tray flats at high plant density during July and August the leaves developed high leaf area index above the plant crowns and the crown near the base of leaf petioles was completely shaded. Wavelengths less than 700 nm did not reach the crown because the leaves absorbed the photosynthetically active radiation incident on the leaf surface. Illuminating the crown for 16 h per day (1 day) for 4 weeks in August with red light decreased transplants that flowered by mid October. The results suggest that the absence of red light on the crown has a quantitative effect on flower bud induction in 'Strawberry Festival' strawberry transplants under non-photo inductive condition.

Last Modified: 11/22/2014