Biometria e morfologia da semente e plântula de oiticica

Abstract

Resumo: A carência de trabalhos sobre plantas nativas da Caatinga nordestina é perceptível, sobretudo, no que se refere aos estudos de suas sementes. Dentre as referidas espécies, destaca-se por seus múltiplos usos, a oiticica (Licania rigida Benth). Objetivou-se com este trabalho determinar e descrever a biometria e morfologia da semente e plântula de oiticica. O trabalho foi conduzido no Laboratório de Análises de Sementes do Departamento de Fitotecnia/UFC. Foram realizadas, nas sementes, medições individuais de comprimento, largura e espessura e a determinação morfológica de suas partes internas e externas, além da caracterização da plântula com suas respectivas estruturas. A semente de oiticica é eurispérmica, apresenta comprimento de 3,1 a 5,0 cm, largura de 1,3 a 1,7 cm e espessura de 1,2 a 1,7 cm. O embrião é grande de formato linear, com cotilédones carnosos de cor branca amarelada, dobrados e apresentam nervuras e o eixo hipocótilo-radícula curto. Germinação inicia-se aos 15 dias, sendo hipógea criptocotiledonar. A plântula possui nas faces dos primórdios foliares, uma camada esbranquiçada com aspecto cotonoso. Palavras-chaves:Licania rigida Benth, germinação, Caatinga.Abstract: Lack of works in native plants of caatinga northeastern is obvious, especially, relating to study of seeds. Among these species, stands out for its multiple uses, the oiticica (Licania rigida Benth). The objective of present experiment was to determinate the biometry and morphology the seed and seedling of Licania rigida. The essay was conducted at the Laboratory of Analysis of Seeds of the Phytotechny Department/UFC. Used were what measurement referent this length, width end thickness as well as detailed description internal end external of seed. Results showed that the seeds are euryspermycs, has length 3.1 to 5.0 cm, width 1.3 to 1.7 cm and thickness 1.2 to 1.7 cm. The embryo is large linear format, with fleshy cotyledons yellowed, folded white and have short ribs and the hypocotyl-radicle axis. Germination starts after 15 days, hypogeal cryptocotylar. The seedling has the faces of the leaf primordia, a whitish layer cotonoso aspect.

Radiography and biometric analysis of broadleaf vegetable seeds

“…Morphological studies of seeds are conducted to understand their structures and provide information about germination, variability, storage, sowing methods and assist in the identification of the species (Diniz et al, 2015).…”

Biometry of Seeds of Jatropha mollissima (Pohl) Baill. and Cnidoscolus urens (L.) Arthur (Euphorbiaceae) from Different Matrices in the Semi-Arid Region of Brazil

“…One of the characteristics of native species is the high genetic variability, which is remarkable in the morphology and size of fruits and seeds and is often associated with environmental factors, in addition to biotic and abiotic factors that directly influence the development of fruits and seeds, thus modifying their biometry [10,11]. In this context, research focused on the morphology of fruits and seeds provides information on their structures, as well as important data on the biological cycle of the species [12,13].…”

Characterization of Seeds, Seedlings and Initial Growth of Jacaranda Mimosifolia D. Don. (Bignoniaceae)

“…Biometric characterization of seeds assists the identification of families, genres and species, it helps to understand dispersion and germination processes, and also to improve seeds processing, storage, and sowing methods (Paoli and Bianconi, 2008;Rego et al, 2010;Diniz et al, 2015). Likewise, studies on seedlings morphology help generating data used to classify germination types and to identify some species structures, enabling to perceive the functionalities of such structures in the ecosystem, and to subsidize programs of conservation and environmental restoration (Cosmo et al, 2017).…”