Morphophysiological aspects of <i>Erythroxylum pauferrense</i> Plowman seedlings submitted to shading

Autores/as

DOI:

https://doi.org/10.5902/1980509862951

Palabras clave:

Abiotic stress, Erythroxylaceae, Guarda-orvalho, Irradiance

Resumen

Sunlight directly influences on the development of forest species by affecting the attributes of plant growth and physiology. Among these species, Erythroxylum pauferrense Plowman is considered a rare species, as its distribution is restricted only to the state of Paraíba. Therefore, studies are needed that seek to evaluate the adaptation, development and propagation of the species under different environmental conditions. This study aimed to evaluate morphophysiological aspects of Erythroxylum pauferrense seedlings submitted to different levels of shading. The experiment was carried out under greenhouse condition in a completely randomized design with five treatments (0, 30, 50, 70, and 90% shading) and eight replicates. Growth characteristics, morphofunctional attributes, gas exchange, chlorophyll (Chl) a fluorescence, and Chl content were evaluated. Data were submitted to analysis of variance followed by polynomial regression analysis. Results showed that plants grown under 30 to 50% shading showed higher plant height, stem diameter, absolute growth rate for plant height, leaf dry mass, stem dry mass, total dry mass, Dickson’s quality index, leaf area, and leaf area index, as well as net assimilation rate of CO2, stomatal conductance, transpiration, instantaneous water use efficiency, and Chl a, b, and a+b contents. Therefore, levels from 30 to 50% shading are the most recommended for the production of Erythroxylum pauferrense seedlings. We recommend using Erythroxylum pauferrense to reforest the understory in disturbed areas in Brejos de Altitude and large-scale production of seedlings under intermediate levels of shading.

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Biografía del autor/a

João Everthon da Silva Ribeiro, Universidade Federal da Paraíba, Areia, PB

Cientista Agrário, Dr., Pesquisador Autônomo, Departamento de Fitotecnia e Ciências Ambientais, Universidade Federal da Paraíba, Rodovia PB 079 – Km 12, CEP 58397-000, Areia (PB), Brasil. j.everthon@hotmail.com (ORCID: 0000-0002-1937-0066);

Ester dos Santos Coêlho, Universidade Federal Rural do Semi-Árido, Mossoró, RN

Engenheira Agrônoma, Mestranda pelo Programa de Pós-Graduação em Fitotecnia, Universidade Federal Rural do Semi-Árido, Av. Francisco Mota Bairro, 572, CEP 59625-900, Mossoró (RN), Brasil. estersantos12@hotmail.com (ORCID: 0000-0002-5541-1937);

Francisco Romário Andrade Figueiredo, Universidade Federal Rural do Semi-Árido, Mossoró, RN

Agroecólogo, Me., Doutorando pelo Programa de Pós-Graduação em Fitotecnia, Universidade Federal Rural do Semi-Árido, Av. Francisco Mota Bairro, 572, CEP 59625-900, Mossoró (RN), Brasil. romarioagroecologia@yahoo.com.br (ORCID: 0000-0002-4506-7247);

Walter Esfrain Pereira, Universidade Federal da Paraíba, Areia, PB

Engenheiro Agrônomo, Dr., Professor Titular, Departamento de Ciências Fundamentais e Sociais, Universidade Federal da Paraíba, Rodovia PB 079 – Km 12, CEP 58397-000, Areia (PB), Brasil. walterufpb@yahoo.com.br (ORCID: 0000-0003-1085-0191);

Manoel Bandeira de Albuquerque, Universidade Federal da Paraíba, Areia, PB

Engenheiro Agrônomo, Dr., Professor Associado II, Departamento de Fitotecnia e Ciências Ambientais, Universidade Federal da Paraíba, Rodovia PB 079 – Km 12, CEP 58397-000, Areia (PB), Brasil. manoel1977@hotmail.com (ORCID: 0000-0003-1871-0046);

Marlenildo Ferreira Melo, Universidade Federal Rural do Semi-Árido, Mossoró, RN

Engenheiro Agrônomo, Me., Doutorando pelo Programa de Pós-Graduação em Fitotecnia, Universidade Federal Rural do Semi-Árido, Av. Francisco Mota Bairro, 572, CEP 59625-900, Mossoró (RN), Brasil. marlenildo-melo@hotmail.com (ORCID: 0000-0001-7449-6916).

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Publicado

2022-03-25

Cómo citar

Ribeiro, J. E. da S., Coêlho, E. dos S., Figueiredo, F. R. A., Pereira, W. E., Albuquerque, M. B. de, & Melo, M. F. (2022). Morphophysiological aspects of <i>Erythroxylum pauferrense</i> Plowman seedlings submitted to shading. Ciência Florestal, 32(1), 395–416. https://doi.org/10.5902/1980509862951

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