Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/59590
Type: Artigo de periódico
Title: PHOTOCONTROL OF SEED-GERMINATION IN IMPATIENS-WALLERANA HOOK F
Author: DESOUZA, RP
PEREIRA, MDA
Abstract: General characteristics of light sensitivity of Impatiens wallerana seeds were investigated. Germination was absolutely dependent on light, irrespective of temperature. High percentages of germination were obtained by exposure to long periods of illumination or, alternatively, to several repeated short irradiations with red light. In this case, responsiveness to light was not altered by increasing either the initial incubation period in darkness or the dark intervals between short exposures. Effects of red light were reversed by far-red light, thus demonstrating the involvement of phytochrome. Evidence was presented for an interactive effect, of unknown physiological nature between red and far-red light on the germination of the seeds.
Subject: IMPATIENS WALLERANA
PHOTOCONTROL
SEED GERMINATION
Country: Holanda
Editor: Kluwer Academic Publ
Rights: fechado
Date Issue: 1994
Appears in Collections:Unicamp - Artigos e Outros Documentos

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