publication . Article . 2016

DAYTIME VARIATIONS OF CHLOROPHYLL A FLUORESCENCE IN PAU D'ALHO SEEDLINGS

Marcos Antonio Bacarin; Emanuela Garbin Martinazzo; Daniela Cassol; Antelmo Ralph Falqueto; Diolina Moura Silva;
Open Access English
  • Published: 01 Dec 2016
  • Publisher: Sociedade de Investigações Florestais
Abstract
ABSTRACT Analysis of transient and modulated fluorescence of chlorophyll a were made at one-hour intervals during an eight-hour period starting at 07:30h aiming to study mechanisms of photoprotection against high radiation and temperature in Gallesia integrifolia plants. Seeds were germinated inside plastic pots containing soil as substrate. At 120 days after emergence, chlorophyll fluorescence measurements were performed using Handy-PEA and FMS2 fluorometers. During the course of a day, an increase and a subsequent decrease in temperature and in photosynthetic active radiation were observed until 12:30h. Changes in transient kinetic curves of chlorophyll a fluo...
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free text keywords: Gallesia integrifolia, Photosynthetic active radiation, JIP test, Gallesia integrifólia, Radiação fotossinteticamente ativa, Teste JIP, Chemistry, Horticulture, lcsh:Forestry, lcsh:SD1-669.5
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