Morpho-Anatomical and Physiological Responses Can Predict the Ideal Period for the Transplantation of Hydroponic Seedlings of Hymenaea courbaril , a Neotropical Fruit Tree

Plants
Daniele de Cássia Vieira de SousaLuciana Cristina Vitorino

Abstract

Hydroponics is an excellent alternative approach for the production of seedlings, given the growing demand for fruiting trees for the reforestation or recuperation of degraded natural landscapes. In most cases, however, little is known about the optimal period for the maintenance of the seedling in the hydroponic system. Given this, we decided to investigate the hypothesis that morpho-anatomical and physiological alterations can be used to predict the optimal timing for the transplantation of the seedlings to the soil substrate, thereby guaranteeing the most cost-effective application of the hydroponic system. We selected Hymenaea courbaril L., an important Neotropical fruit tree, as the model for this study. We cultivated H. courbaril seedlings in a static hydroponic system and evaluated morpho-anatomical, physiological, and growth parameters over the course of seedling development (30, 60, 90, 120, 150, and 180 days after transplantation; DAT). We observed an interesting relationship between the increase in the density (SD) and conductance (gsw) of the stomata up to 120 DAT, which reflected higher rates of photosynthesis (A), but also a reduced efficiency in the use of water. In the subsequent intervals, the SD of the plants ...Continue Reading

References

May 1, 2008·Annual Review of Plant Biology·Neil R Baker
Jan 30, 2010·Journal of Environmental Sciences (China)·Jianrong Xia, Qiran Tian
Aug 4, 2016·Sub-cellular Biochemistry·Hideki HashimotoRichard J Cogdell
Mar 22, 2019·Frontiers in Plant Science·Lígia T BertolinoJulie E Gray
Jun 7, 2019·Journal of Experimental Botany·Jessica DunnJulie E Gray

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