TITLE

Growth, Chlorophyll Content and Photosynthetic Capacity of Eucalyptus Clones Under Nutrition Omission

AUTHOR(S)
Silva, Inaê; Ferreira, Evander; Pereira, Israel; Gonçalves, Janaína; Silva, Enilson; Veloso, Ronnie; Laia, Marcelo
PUB. DATE
July 2014
SOURCE
Australian Journal of Basic & Applied Sciences;Jul2014, Vol. 8 Issue 10, p87
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background: Since the mineral nutrition is very important for the proper development of planted forests in Brazil, analyzing the behavior of different commercial genotypes under the failure of some nutrients may allow better optimization of fertilizer application on this crop and decrease costs production. Objective: It was aimed to evaluate the effect of the omission of macronutrients, B, Cu and Zn over the growth, total chlorophyll index and potential quantic efficiency of the photosystem II of hybrid clones of Eucalyptus grandis x Eucalyptus urophylla. Results: The default of nutrients negatively affect height growth and total chlorophyll content of the clone studied. It was found that Zn and Mg were the nutrients more limited height growth of seedlings, while N was the nutrient that more limited the total chlorophyll index. The treatment with omission of S considerably affected the potential quantum efficiency of photosystem II of the treated plants. Conclusion: The absence of some nutrients caused significant damage to the photosynthetic apparatus of the plants studied. Further investigation on the effects of macro and micronutrients in the photochemical efficiency of PSII are longed.
ACCESSION #
97368465

 

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