Floresta e Ambiente
https://floram.org/article/doi/10.1590/2179-8087.014818
Floresta e Ambiente
Original Article Silviculture

Morphological and Biochemical Responses of Poincianella Pyramidalis Seedlings Subjected to Water Restriction

Moadir de Sousa Leite; Salvador Barros Torres; Caio César Pereira Leal; Janete Rodrigues Matias; Washington Aparecido da Luz Brito; Gutierres Silva Medeiros Aquino

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Abstract

Abstract: Catingueira (Poincianella pyramidalis Tul. L. P. Queiroz) is an endemic species of the Caatinga, with great economic potential. Research on the development of this species under conditions of water restriction, common in the Northeastern semi-arid region, is still scarce. This study evaluated the effects of water restriction on the morphological and biochemical characteristics of catingueira seedlings subjected to water restriction. The experimental design was a randomized complete block design, with five treatments and four replicates. The treatments consisted of periods of water restriction (0, 6, 12, 18 and 24 days without irrigation). The characters evaluated were shoot height, leaf diameter, number of leaves, leaf area, total dry mass, ratio between shoot height and dry mass, Dickson quality index, chlorophylls a and b content, total soluble sugars and free proline. Periods of water restriction longer than six days caused damage to the seedlings development, with reduced growth and quality.

Keywords

Fabaceae, water stress, catingueira, forest species, Caatinga

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Submitted date:
03/27/2018

Accepted date:
11/24/2018

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