Morpho-physiological analyses of Allamanda blanchetii A. DC. seedlings under water deficit


  • Magnólia Martins Alves Universidade Federal da Paraíba
  • Manoel Bandeira de Albuquerque Universidade Federal da Paraíba
  • Walter Esfrain Pereira Universidade Federal da Paraíba
  • Maria de Fátima de Araújo Lucena Universidade Federal de Campina Grande
  • João Pedro da Silva Azevedo Universidade Federal da Paraíba



Water stress, Dry matter, Transpiration


The Allamanda blanchetii belongs to the Apocynaceae family, being an ornamental species popularly known as allamanda-roxa and is endemic to the Caatinga. The aim of this research was to evaluate the growth, gas exchange, relative water content, and stomatal density of A. blanchetii under water stress conditions. The experimental design was completely randomized with six levels of the maximum water holding capacity (MWHC) (100%, 80%, 60%, 40%, and 20%) with eight replications. Weekly, it was performed the evaluations of plant height and number of leaves. The results for water stress treatment in the A. blanchetii plants show that they develop better in the water levels of 100% and 80% of the MWHC, without presenting significant morphological and physiological changes. In turn, 20% of the MWHC does not allow the survival of the A. blanchetii plants. The water restriction negatively interfered in the gas exchange in the treatment of 60% and 40% of the MWHC. Therefore, it can be concluded that the A. blanchetii plants grow satisfactorily in 100% and 80% of the MWHC, ensuring the growth and survival during the drought period. The water availability to which the plants were submitted does not influence the total chlorophyll and relative water content of leaves. Gas exchanges are adversely affected at levels of water availability below 80% of the MWHC.


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How to Cite

ALVES, M.M., ALBUQUERQUE, M.B. de, PEREIRA, W.E., LUCENA, M. de F. de A. and AZEVEDO, J.P. da S., 2017. Morpho-physiological analyses of Allamanda blanchetii A. DC. seedlings under water deficit . Bioscience Journal [online], vol. 33, no. 5, pp. 1134–1143. [Accessed18 May 2024]. DOI 10.14393/BJ-v33n5a2017-36408. Available from:



Agricultural Sciences