Armazenamento e métodos para a superação da dormência de sementes de mulungu

Silva, Laércio Wanderlei da; Coelho, Maria de Fátima Barbosa; Maia, Sandra Sely Silveira; Silva, Ricardo Carlos Pereira da; Candido, Willame dos Santos; Silva, Ana Claudia da

doi:10.5433/1679-0359.2013v34n1p171

Cited by 8 publications

(6 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Mechanical scarification of the seed coat was efficient when breaking the dormancy of seeds of various species of the family Fabaceae such as, Cassia fistula L. (Bezerra et al, 2014;Guedes et al, 2013), Erythrina velutina Willd (Santos et al, 2013), andCentrosema plumier Benth (GAMA et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

Seed Metrics and Influence of Temperatures and Pre-Germination Treatments on Germination of Caesalpinia Ferrea Seeds

SilvaBandeira

Santos

Amaral

et al. 2021

NAT

View full text Add to dashboard Cite

The objective of this study was to evaluate seed metrics, optimum temperature for germination and efficiency of five pre-germination treatments for overcoming dormancy of Caesalpinia ferrea seeds. Seeds were subjected to constant temperatures of 15, 20, 25, 30 and 35°C and to the following pre-germination treatments: nicking with pincers; immersion in water for 24 hours at room temperature; scarification with sandpaper; immersion in caustic soda for 60 minutes; and control (untreated seeds). Germination rate was assessed by germination percentage and germination speed index. A completely randomized design was used with four replicates of 50 seeds each and means were compared by Tukey test at 5% probability. The best germination performance was obtained in the 15-30°C temperature range and by using chemical scarification with immersion in caustic soda, and mechanical scarification by nicking with pincers and by rubbing on sandpaper.

show abstract

Section: Discussionmentioning

confidence: 99%

Seed Metrics and Influence of Temperatures and Pre-Germination Treatments on Germination of Caesalpinia Ferrea Seeds

SilvaBandeira

Santos

Amaral

et al. 2021

NAT

View full text Add to dashboard Cite

show abstract

“…The materials were submitted to superficial asepsis in 2% sodium hypochlorite for 5 minutes and then rinsed in distilled water. They were then mechanically scarified (Santos et al, 2013b) and germinated in paper substrate moistened with distilled water, equivalent to 2.5 times of the dry paper weight, and in sterile sand, with 60% humidity. The seeds were kept in a BOD-type (Biological Oxygen Demand) incubator germination chamber at 25 °C.…”

Section: Physiological Potentialmentioning

confidence: 99%

Seed Viability and RNA Extraction Methods of Erythrina velutina Under Drought Stress

Souza¹,

Freitas²,

Lima³

et al. 2020

JAS

View full text Add to dashboard Cite

Abiotic stress caused by rigorous environmental conditions, such as drought, has negative effects on seeds. The species from arid and semiarid areas have mechanisms to maintain seed viability. In this study, the analyses of physical and physiological quality of the seeds of Erythrina velutina and their response to drought stress and RNA extraction methods were carried out. The seeds were collected from mother trees in two different provenances of natural occurrences of the species. The physical quality, viability, and vigor of the seeds were evaluated by morphometric parameters, germination, and electrical conductivity tests. The seeds were submitted to drought stress conditions for 0, 24, 48, and 72 hours on -0.8 MPa polyethylene glycol solution. To evaluate the viable RNA extraction method, the seed embryos were used for the extraction of this molecule and with an assessment of quantity and quality. The seeds from Pernambuco that were harvested in 2008 were bigger and presented lower vigor when in comparison to seeds that were harvested from Sergipe in 2012. The seeds under drought stress conditions presented null germination for all the treatments. After the drought stress, they were germinated on a paper substrate moistened with water, with better responses from the Lot Sergipe, 2012. The imbibition of seeds in the solution for 24 hours provides an increase in germination for less vigorous seeds, being indicated as a pre-germinative treatment. The RNA quality obtained by using a commercial extraction kit has better results, providing materials without contaminants when compared to the TRIzol method.

show abstract

“…O mulungu (Erythrina velutina Willd.) é uma espécie arbórea endêmica da região Nordeste do Brasil, apresentando relevante importância econômica e medicinal, sendo utilizada no combate a tosse, asma, crises nervosas e dores musculares (SANTOS et al, 2013). Além disso, o mulungu é uma árvore com característica ornamental, sendo usada na arborização de ruas, jardins e alamedas (OLIVEIRA et al, 2012;LOPES et al, 2019).…”

Section: Introductionunclassified

Respostas Fisiológicas De Mulungu Submetida a Estresse Salino E Aplicação De Ácido Salicílico

Figueiredo

Lopes

Silva

et al. 2019

R_I

View full text Add to dashboard Cite

RESPOSTAS FISIOLÓGICAS DE MULUNGU SUBMETIDA A ESTRESSE SALINO E APLICAÇÃO DE ÁCIDO SALICÍLICO FRANCISCO ROMÁRIO ANDRADE FIGUEIREDO1; MARIA DE FÁTIMA QUEIROZ LOPES2; RONIMEIRE TORRES DA SILVA2; JACKSON SILVA NÓBREGA2; TOSHIK IARLEY DA SILVA3 E RISELANE DE LUCENA ALCÂNTARA BRUNO2 1 Departamento de Ciências Vegetais, Universidade Federal Rural do Semi-Árido - UFERSA, Rua Francisco Mota, 572, Presidente Costa e Silva, 59625-900, Mossoró - RN, Brasil. E-mail: romarioagroecologia@yahoo.com.br 2 Departamento de Fitotecnia e Ciências Ambientais, Universidade Federal da Paraíba - UFPB, Rodovia PB-079, 58397-000, Areia-PB, Brasil. E-mails: fatimaqueiroz0@gmail.com; ronimeiretorres@hotmail.com; jacksonnobrega@hotmail.com; lanebruno.bruno@gmail.com 3 Departamento de Fitotecnia, Universidade Federal de Viçosa - UFV, Avenida Peter Henry Rolfs, s/n - Campus Universitário, 36570-900, Viçosa – MG, Brasil. E-mail: iarley.toshik@gmail.com 1 RESUMO O mulungu (Erythrina velutina Willd.) é uma espécie florestal nativa da região Nordeste do Brasil, sendo utilizada para fins econômicos e medicinal. No entanto, o seu desempenho fisiológico pode ser comprometido por diversos fatores bióticos e abióticos, dentre estes, o estresse salino. Nesse sentido, a aplicação do ácido salicílico, fitohormônio de origem fenólica, torna-se uma estratégia promissora na busca de minimizar esses efeitos deletérios. Assim, o objetivou-se conhecer as respostas fisiológicas do mulungu irrigado com água salina associado a aplicação de ácido salicílico. O delineamento utilizado foi em blocos casualizados, em esquema fatorial incompleto 5x5, gerados a partir da matriz Composto Central de Box com cinco níveis de condutividade elétrica da água de irrigação (0,5; 1,74; 4,75; 7,76 e 9,0 dS m-1) e cinco doses de ácido salicílico (0,0; 0,29; 1,0; 1,71 e 2,0 mM L-1), com quatro repetições. Foram avaliadas as trocas gasosas, fluorescência e índice de clorofila aos 60 dias após a irrigação com água salina. Os dados foram submetidos à análise de variância pelo teste F, nos casos de significância foi realizada análise de regressão polinomial. A salinidade da água de irrigação ocasiona efeitos deletérios nas trocas gasosas de Erythrina velutina Willd. Os índices de clorofila foram afetados positivamente pelos níveis salinos aplicados e a fluorescência inicial das plantas foi atenuada pela aplicação de ácido salicílico. Palavras-chave: Erythrina velutina Willd, caatinga, salinidade, trocas gasosas FIGUEIREDO, F. R. A.; LOPES, M. F. Q.; SILVA, R. T.; NÓBREGA, J. S.; SILVA, T. I.; AND BRUNO, R. A. L. PHYSIOLOGICAL RESPONSES OF MULUNGU SUBMITTED TO SALT STRESS AND APPLICATION OF SALICYLIC ACID 2 ABSTRACT Mulungu (Erythrina velutina Willd.) is a forest species native to the Northeast region of Brazil, being used for economic and medicinal purposes. However, its physiological performance can be compromised by several biotic and abiotic factors, among them, saline stress. That way, the application of salicylic acid, phytohormone of phenolic origin, becomes a promising strategy in the search to minimize these deleterious effects. Thus, the objective was to learn the physiological responses of mulungu irrigated with saline water associated with the application of salicylic acid. The design was a randomized complete block, in an incomplete factorial scheme, using the Box Central Composite (CCB) matrix with five levels of electrical conductivity of irrigation water (0.5; 1.74; 4.75; 7.76 and 9.0 dS m-1), and five salicylic acid doses (0.0, 0.29, 1.0, 1.71 and 2.0 mM), with four replicates. Gas exchange, fluorescence and chlorophyll indices were evaluated 60 days after irrigation with saline water. Data were submitted to analysis of variance by the F test, in cases of significance polynomial regression analysis was performed. The salinity of irrigation water causes deleterious effects on the gas exchange of Erythrina velutina Willd. The chlorophyll indices were positively affected by saline levels applied and the initial fluorescence of the plants was attenuated by the application of salicylic acid. Keywords: Erythrina velutina Willd, caatinga, salinity, gas exchange

show abstract

Armazenamento e métodos para a superação da dormência de sementes de mulungu

Cited by 8 publications

References 2 publications

Seed Metrics and Influence of Temperatures and Pre-Germination Treatments on Germination of Caesalpinia Ferrea Seeds

Seed Metrics and Influence of Temperatures and Pre-Germination Treatments on Germination of Caesalpinia Ferrea Seeds

Seed Viability and RNA Extraction Methods of Erythrina velutina Under Drought Stress

Respostas Fisiológicas De Mulungu Submetida a Estresse Salino E Aplicação De Ácido Salicílico

Contact Info

Product

Resources

About