This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by Doss, R. P. Search for Related Content PubMed PubMed Citation Articles by Doss, R. P. Agricola Articles by Doss, R. P.

Articles

Influence of Timing and Number of Consecutive Inductive Photoperiodic Cycles on the Flowering of Lemna^1,2

^a Department of Environmental Horticulture, University of California, Davis, California 95616

Requirements for flowering of the short day plant Lemna perpusilla Torr. strain 6746 can be studied by interposition of varying numbers of consecutive short days during 7 days of continuous light. A single inductive cycle can cause the formation of few flowers if it comes during the middle of a 7-day period of continuous light. Three inductive cycles cause 30% or more of the fronds to flower if the cycles are properly spaced in the 7-day period. The fact that timing of the inductive photoperiodic cycles is critical indicates the importance of development time and abortion of evoked floral primordia in the flowering response. These results are particularly useful in studies of processes occurring during induction.

¹ This research was supported in part by a Chancellor's Patent Fund Grant and a Priority C Research Grant, University of California, Davis.

² A portion of this report is taken from a dissertation submitted in partial fulfillment of the requirements for a Ph.D. degree in Plant Physiology at the University of California, Davis.