Initial vegetative growth of coffee plants submitted to foliar spraying of Paclobutrazol

Lucialdo Oliveira d’Arêde, Sylvana Naomi Matsumoto, Jerffson Lucas Santos, Anselmo Eloy Silveira Viana, Paula Acássia Ramos Silva


The objective of this study was evaluate the initial vegetative growth of plants cv. CatuaíVermelho IAC 144 submitted to foliar spraying of four solutions concentrations (250, 500, 750 and 1000 mg L-1) of pacloblutrazol (PBZ) and a control. The plants were cultivated in a greenhouse, in a randomized blocks experimental design, with five treatments and four replicates, evaluated at 120 days after PBZ application. The data were subjected to general and regression analysis of variance. All of morphological characteristics were affected by PBZ, with growth reduction of the coffee crown and lifting the root dry weight in comparison to the control plants. PBZ results in elevation of the SPAD index, xylem water potential, net photosynthesis rate and carboxylation efficiency of coffee plants. Net photosynthesis rate was affected by carboxylation efficiency, and transpiration was associated with greater water availability. The PBZ changes the relationship between the shoot and root growth, increasing the growth of roots and optimizes the relations of leaf gas exchange, due to elevation of plant water status.PBZ effects in morphological characteristics in initial growth of coffee plants are more evident in comparison to physiological alterations.


Coffea arabica, growth retardants, triazole


ABU-MURIEFAH, S. S. Effects of paclobutrazol on growth and physiological attributes of soybean (Glycine max) plants grown under water stress conditions. International Journal of Advanced Research in Biological Sciences, Coimbatore, v.2, n.7, p. 81-93, 2015.

ATKIN, O. K. et al. Phenotypic plasticity and growth temperature: understanding interespecific variability. Journal of Experimental Botany, v. 57, n. 2, p. 267-281, 2007.

BABU, M. et al. Transpiration and Photosynthesis as affected by triazoles in mulberry (Morus alba L.). Indian Journal of Advances in Chemical Science, [S.l.], v.2, n.4, 2014.

CRIADO, M. V. et al. Cytokinin induced changes of nitrogen remobilization and chloroplast ultrastructure in wheat (Triticum aestivum). Journal of Plant Physiology, Jena, v. 166, n. 16, p. 1775-1785, 2009.

DaMATTA, F. M. Exploring drought tolerance in caffee: a physiological approach with some insights for plant breeding. Brazilian Journal Plant Physiology, Campos de Goytacazes, v. 16, p. 1-6, 2004.

DANIEL, G. et al. Effect of foliar application of mepiquat chloride and ethephon on floral bud induction and crop yield in robusta coffee. Journal of Coffee Research, Chickmagalur, v.36, n.1/2, p.60-63, 2008.

DIAS, P. C. et al. Morphological and physiological responses of two coffee progenies to soil water availability, Journal of Plant Physiology, [S.l.], v.164, p. 1639-1647, 2007.

FERNÁNDEZ, J.A. et al. Induction of drought tolerance by paclobutrazol and irrigation deficit in Phillyrea angustifolia during the nursery period. Scientia Horticulturae, [S.l.], v. 107, n.3, p. 277-283, 2006.

FIGUEIRÔA, J. M.; BARBOSA, D. C. A.; SIMABUKURO, E. A. Crescimento de plantas jovens de Myracrodruon urundeuva Allemão (Anacardiaceae) sob diferentes regimes hídricos. Acta Botanica Brasilica, São Paulo, v.18, p.573-580, 2004.

HARMATH, J. et al. Influence of some growth retardants on growth, transpiration rate and CO2 fixation of Caryopteris incana ‘Heavenly Blue’. Folia Oecologica, Zvolen, v. 41, n. 1, p. 24-33, 2014.

HONORATO JÚNIOR, J. et al. Photosynthetic and antioxidative alterations in coffee leaves caused by epoxiconazole and pyraclostrobin sprays and Hemileia vastatrix infection. Pesticide Biochemistry and Physiology, [S.l.], v. 123, p.31-39, 2015.

JALEEL, C. A. et al. Water deficit stress effects on reactive oxygen metabolism in Catharanthus roseus; impacts on ajmalicine accumulation. Colloids and Surfaces B: Biointerfaces, Amsterdam, v. 62, n. 1, p. 105-111, 2008.

JESUS, R. B. Os recursos naturais e sua exploração na formação territorial do município de Vitória da Conquista-BA. Enciclopédia Biosfera, Goiânia, v.6, n.9, p. 1-13, 2010.

KISHOREKUMAR, A. et al. Comparative effects of different triazole compounds on growth, photosynthetic pigments and carbohydrate metabolism of Solenostemon rotundifolius. Colloids and Surfaces B: Biointerfaces, Amsterdam, v.6, n.2, p. 207-212, 2007.

LATIMER, J. G. Drought, paclobutrazol, abscisic acid, and gibberellic acid as alternatives to daminozide in tomato transplant production. Journal of the American Society for Horticultural Science, [S.l.], v.117, n.2, p.243-247, 1992.

LOLAEI, A. et al. Role of paclobutrazol on vegetative and sexual growth of plants. International Journal of Agricultural Crop Science, [S.l.], v.5, n. 9, p. 958-961, 2013.,issue%209,%202013.pdf

MARSHALL, J. G.; DUMBROFF, E. B. Turgor regulation via cell wall adjustment in white spruce. Plant Physiology, [S.l.], v. 119, p. 313-319, 1999.

MAURI, R. Interação entre parâmetros hidráulicos e fotossintéticos em Coffea spp. 2015. 32f. Dissertação (mestrado). Universidade Federal de Viçosa, Viçosa.

MATSOUKIS, A.; GASPARATOS, D.; CHRONOPOULOU-SERELIN, A. Environmental conditions and drenched-applied paclobutrazol effects on lantana

specific leaf area and N, P, K, and Mg content. Chilean Journal of Agricultural Research, v. 74, n.1, p. 117-122, 2014.

MOHAN, R. et al. Exploring possibilities of induction of water stress tolerance in mulberry in rainfed condition by application of paclobutrazol. Journal of Global Biosciences, Washim, v.4, n.9, p. 3301-3310, 2015.

MULLINS, M. G.; BOUQUET, A.; WILLIAMS, L. E. Biology of grapevine. Cambridge: Cambridge University Press, 1992. 239 p.

NARDINI, A.; ÕUNAPUU-PIKAS, E.; SAVI, T. When smaller is better: leaf hydraulic conductance and drought vulnerability correlate to leaf size and venation density across four Coffea arabica genotypes. Functional Plant Biology, Layton South, v.41, n.9, p.972-982, 2014.

NAVARRO, A. et al. The influence of mycorrhizal inoculation and paclobutrazol on water and nutritional status of Arbutus unedo L. Environmental and Experimental Botany, [S.l.], v. 66, n. 3, p. 362-371, 2009.

OCHOA, J. et al. Distribution in plant, substrate and leachate of paclobutrazol following application to containerized Nerium oleander L. seedlings. Spanish Journal of Agricultural Research, Madrid, v 73, n.3, p. 621-628, 2009.

OLSON, M. E.; ROSELL, J. A. Vessel diameter-stem diameter scaling across woody angiosperms and the ecological causes of xylem vessel diameter variation. New Phytologist, New Jersey, v.197, n.4, p.1204-1213, 2013.

POMPELLI, M. F. et al. Leaf anatomy, ultrastructure and plasticity of Coffea arabica L. in response to light and nitrogen. Biotemas, Florianópolis, v.25, n.4, p. 13-28, 2012.

PRICINOTTO, L. F.; ZUCARELI, C. Paclobutrazol no crescimento e desempenho produtivo da soja sob diferentes densidades de semeadura. Revista Caatinga, Mossoró, v. 27, n. 4, p. 65-74, 2014.

RADEMACHER, W. Plant growth regulators: backgrounds and uses in plant production. Journal of Plant Growth Regulation, [S.l.], v. 34, p. 845-872, 2015.

ROSELI, A. N. M.; YING, T. F.; RAMLAN, N. F. Morphological and physiological response to Syzygium myrtifolium Walp. to paclobutrazol. Sains Malays, [S.l.], v. 41, n. 10, p. 1187-1192, 2012.

SAMPAIO, D. B.; DOS SANTOS, V. B.; ARAÚJO, A. S. F. Rates of paclobutrazol on soil microbial biomass. Semina: Ciências Agrárias, Londrina, v.3, p.1349-1353, 2010.

SCHOLANDER, P. F. et al. Hydrostatic pressure and osmotic potential in leaves of mangroves and some other plants. Proceedings of the National Academy of Sciences of the United States of America, Washington, v. 52, n. 1, p. 119, 1964.

SHANMUGAPRIYA, A. K.; SIVAKUMAR, T.; PANNEERSELVAM, R. Difeconazole and tricyclazole induced changes in photosynthetic pigments of Lycopersicum esculentum L. International Journal of Agriculture and Food Science, Delhi, v. 3, n.2, p. 72-75, 2013.

SRIVASTAVA et al. Plant biorregulators for sustainable agriculture: integrating redox signaling as a possible unifying mechanism. Advances in Agronomy, Newark, v. 137, P. 237-278, 2016.

TEKALIGN, T. Growth, photosynthetic efficiency, rate of transpiration, lodging, and grain yield of tef (Eragrostis tef (Zucc.) Trotter) as influenced by stage and rate of paclobutrazol application. East African Journal of Science, [S.l.], v.1, n.1, p.35-44, 2007.

WANDERLEY, C. S.; REZENDE, R.; ANDRADE, C. A. B. Efeito de paclobutrazol como regulador de crescimento e produção de flores de girassol em cultivo hidropônico. Ciência e Agrotecnologia, Lavras, v. 31, n. 6, p. 1672-1678, 2007.

ZHU, L. H.; VAN DE PEPPEL, A.; LI, X. Y.; WELANDER, M. Changes of leaf water potential and endogenous cytokinins in young apple trees treated with or without paclobutrazol under drought conditions. Scientia Horticulturae, [S.l.], v.99, n.2, p.133-141, 2004.



  • There are currently no refbacks.