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.
Highlights
AND OBJECTIVESSeveral native tree species are potentially suitable for cultivation and can serve for different purposes due to their value for ornamentation, timber, food or preservation (Scalon et al, 2011)
This study evaluated the effects of water restriction on the morphological and biochemical characteristics of catingueira seedlings subjected to water restriction
This study aimed to evaluate the morphological and biochemical responses of P. pyramidalis seedlings subjected to different periods of water restriction
Summary
Several native tree species are potentially suitable for cultivation and can serve for different purposes due to their value for ornamentation, timber, food or preservation (Scalon et al, 2011). Improving the production system of native species is necessary because of the increased demand for commercial production and use in the recovery of degraded areas (Nietsche et al, 2004). Among species native to the Caatinga, catingueira [Poincianella pyramidalis (Tul.) L. P. Queiroz] is widely distributed in this biome. It has economic potential due to its rusticity and utilization for timber, reforestation, medicinal applications and mainly to its extractive property (Dantas et al, 2009)
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