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Previous issue date: 2017-06-20 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The cultivation of potential fruit species in the semiarid region, using a hydroponic system, arises in an attempt to diversify and boost the economy, especially small and medium producers in this region. However, studies are needed to evaluate the growth, productivity and adaptation of these species. The objective of this study was to evaluate the growth and nutritional profile of Physalis peruviana in a hydroponic floating system, considering different levels of salinity of the water artificially produced with NaCl. The experiment was carried out in a protected environment (greenhouse), where a randomized block design (RBD) was used, with four blocks, being tested five concentrations of salinity: 0; 20; 30; 40 and 60 mM NaCl. At each interval of 10 days, the following measurements were obtained: stem and root lengths, total leaf area and neck diameter and dry matter masses of plants. After 48 days of treatment, in addition to the growth analyzes, the nutrient contents of the leaves were quantified. Data were submitted to analysis of variance and analyzed by means test and regression curves. Leaf nutrient contents were only descriptive. Within the expected, the salinity of the medium restricted the growth of plants of fis?lis. The variables total dry mass (TDM), absolute growth rate (AGR) and number of leaves (NL) were those that suffered the greatest reductions with the increase of the salinity of the medium. In relation to the leaf nutrient profile, it was observed that the higher the Na + and Cl- concentration in the leaves, the lower the K +, Ca2 + and Mg2+ concentrations. According to the data of total dry mass, it was possible to determine the P. peruviana salinity tolerance index (STI), which presented mean values> 70% in most of the experimental period at concentrations of 20 and 30 mM, demonstrating that P. peruviana species is moderately tolerant to salinity. In addition, it was considered in this work that high NaCl levels led to a nutritional imbalance, where sodium ion was the main cause of interferences during growth. / O cultivo de esp?cies frut?feras potenciais na regi?o semi?rida, utilizando sistema hidrop?nico surge na tentativa de diversificar e impulsionar a economia, principalmente de pequenos e m?dios produtores desta regi?o. No entanto s?o necess?rios estudos que avaliem o crescimento, produtividade e adapta??o destas esp?cies. O presente trabalho teve como objetivo avaliar o crescimento e o perfil nutricional da Physalis peruviana em sistema hidrop?nico do tipo floating, considerando diferentes n?veis de salinidade da ?gua produzidos artificialmente com NaCl. O experimento foi realizado em ambiente protegido (estufa), onde foi empregado o delineamento em blocos casualisados (DBC), com 4 blocos, sendo testadas cinco concentra??es de salinidade: 0; 20; 30; 40 e 60 mM de NaCl. A cada intervalo de 10 dias foram obtidas as seguintes medidas: comprimentos do caule e da raiz, ?rea foliar total e di?metro do colo e as massas de mat?ria seca das plantas. Ap?s 48 dias de tratamento al?m das an?lises de crescimento foram quantificados os conte?dos de nutrientes minerais das folhas. Os dados foram submetidos a an?lise de vari?ncia e analisados mediante teste de m?dias e por curvas de regress?o. Os teores dos nutrientes foliares foram apenas descritivos. Dentro do esperado, a salinidade do meio restringiu o crescimento de plantas de fis?lis. As var?veis massa seca total (MST), taxa de crescimento absoluto (TCA) e n?mero de folhas (NF) foram aquelas que sofreram as maiores redu??es com o incremento da salinidade do meio. Em rela??o ao perfil de nutrientes foliares, constatou-se que quanto maior a concentra??o de Na+ e Cl- nas folhas, menores as de K+, Ca2+ e Mg2+. De acordo com os dados de massa seca total foi poss?vel determinar o ?ndice de toler?ncia ? salinidade (ITS) de P. peruviana, que apresentou valores m?dios >70% na maior parte do per?odo experimental nas concentra??es de 20 e 30 mM, demonstrando que a esp?cie P. peruviana ? moderadamente tolerante a salinidade. Al?m disso, considerou-se neste trabalho que altos n?veis de NaCl levaram a um desbalan?o nutricional nas plantas, onde o ?on s?dio foi o principal causador das interfer?ncias durante o crescimento.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.uefs.br:8080:tede/584 |
| Date | 20 June 2017 |
| Creators | Coutinho, Mileide Santos |
| Contributors | Cruz, Claudin?ia Regina Pelacani |
| Publisher | Universidade Estadual de Feira de Santana, Mestrado Acad?mico em Recursos Gen?ticos Vegetais, UEFS, Brasil, DEPARTAMENTO DE CI?NCIAS BIOL?GICAS |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UEFS, instname:Universidade Estadual de Feira de Santana, instacron:UEFS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 8146646481622241874, 600, 600, 600, 600, 600, 5026123383450589282, -289993050269505198, 7737708247419018223, 3590462550136975366 |
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