Efeito da salinidade na emergência e crescimento inicial de plântulas de flamboyant

Nogueira, Narjara Walessa; Lima, Jailma Suerda Silva de; Freitas, Rômulo Magno Oliveira de; Ribeiro, Maria Clarete Cardoso; Leal, Caio César Pereira; Pinto, José Rivanildo de Souza

doi:10.1590/s0101-31222012000300014

Cited by 12 publications

(9 citation statements)

References 8 publications

(5 reference statements)

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“…Raf.) presented a maximum emergence percentage of 74% at 0.5 dS m -¹ with a progressive decrease at 1.5 dS m -1 and above; however, differences occurred only at 6.0 dS m -¹ (NOGUEIRA et al, 2012). Arugula seeds (Eruca sativa Mill.)…”

Section: Resultsmentioning

confidence: 99%

LIMA BEAN ( Phaseolus lunatus L.) SEEDS EXPOSED TO DIFFERENT SALT CONCENTRATIONS AND TEMPERATURES

et al. 2017

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Salinity problems are increasing in the semi-arid regions of northeastern Brazil. Thus, detailed studies of the region's cultured crops, primarily salt-tolerant species, are important. Therefore, the aim of the present study was to evaluate the salt stress tolerance of lima bean (Phaseolus lunatus L.) seeds at different temperatures. This study was conducted in the Seed Analysis Laboratory, Agricultural Sciences Center, Federal University of Paraíba (Areia, PB, Brazil) by using seeds of four lima bean cultivars (Branca, Orelha de Vó, Rosinha, and Roxinha) in a randomized experimental design. Sodium chloride (NaCl) was used as a solute for salt-stress simulation at the following concentrations: 0.0 (control), 1.5, 3.0, 4.5, 6.0, 7.5, and 9.0 dS m -1 ; temperatures were maintained constant at 25°C, 30°C, and 35°C. Germination and vigor tests were performed to evaluate the treatment effects (first count, germination rate index, seedling length, and dry matter). Germination rate of lima bean seeds increased in salt concentrations up to 9 dS m -1 , and seeds of Roxinha cultivar exhibited the highest salinity tolerance. The development of lima bean cultivar seedlings was negatively affected at 35°C under high-salinity conditions.

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Section: Resultsmentioning

confidence: 99%

LIMA BEAN ( Phaseolus lunatus L.) SEEDS EXPOSED TO DIFFERENT SALT CONCENTRATIONS AND TEMPERATURES

et al. 2017

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“…Diversas espécie apresentaram um menor peso da matéria fresca ao germinarem sob substratos salinos, tais como, Cnidosculus phyllacanthus (Silva et al, 2005), Moringa oleifera (Elhag et al 2012;Oliveira et al, 2009), Delonix regia (NOGUEIRA et al, 2012) e Cedrella odorata (Ferreira et al, 2013).…”

Section: Resultados E Discussõesunclassified

Influência Da Salinidade Na Emergência E Crescimento Inicial De Mulungu

Silva¹,

Costa²,

Costa³

et al. 2019

Rev. Cien. Agr.

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<div>Este trabalho objetivou-se avaliar o efeito da salinidade na emergência e no crescimento inicial de mulungu (Erythrina velutina Willd.). O experimento foi desenvolvido em casa-de-vegetação na Universidade Federal Rural de Pernambuco. O delineamento experimental utilizado foi inteiramente casualizado com cinco tratamentos e quatro repetições de 25 sementes cada. Os tratamentos salinos foram: 0, 25, 50, 75 e 100 mM de CaCl2. Avaliou-se a porcentagem de emergência (%E), índice de velocidade de emergência (IVE), tempo médio de emergência (TME) e velocidade média de emergência (VME). Ao final do experimento, mediu-se a altura da parte aérea, o comprimento da raiz, altura total e o diâmetro da plântula, contabilizou-se o número de folhas e determinou-se o peso da matéria seca da parte aérea, raiz e total. Todas as variáveis avaliadas foram afetadas com o aumento do nível salino, onde se observou que a germinação e o crescimento das plântulas foram reduzidos em, aproximadamente, 96% e 100%, respectivamente para o nível mais salino (100 mM de CaCl2). Sementes de Erythrina velutina tem sua germinação afetada a partir do nível de 50 mM de CaCl2, contudo o desenvolvimento das plântulas é afetado a partir de 25 mM de CaCl2.</div>

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“…), irrigated with brackish water at NaCl concentrations between 0 and 5.0 dS m -1 under greenhouse environmental conditions have observed that values obtained for dry matter accumulation in these seedlings were reduced and with values statistically different when salinity level of irrigation water was gradually increased. However, Nogueira et al (2012) in a similar study performed with brackish water with salt concentrations ranging between 0 and 6.0 dS m -1 , and by using flamboyant seeds have observed that there were no statistical differences among values obtained in treatments where irrigation with brackish water was applied to the seedlings with sodium chloride concentrations of 0.5, 1.5 and 3.0 dS m -1 . These authors have also observed that decrease on dry matter accumulation has occurred from the NaCl concentration of 4.5 dS m -1 ; and that the lowest value for this variable was found in treatment where salt concentration in irrigation solution was 6.0 dS m -1 .…”

Section: Resultsmentioning

confidence: 86%

Emergence and early development of seedlings of Mimosa ophthalmocentra Mart. ex Benth.) irrigated with brackish water

Leal¹,

Torres²,

Nogueira³

et al. 2015

Biosci. J.

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ABSTRACT:The species Jurema-imbira (Mimosa ophthalmocentra) is typical of the Caatinga of Northeast Brazil and has medicinal properties; besides being also used by timber industry. The study aimed at assessing effects of irrigation water salinity on emergence and early development of seedlings of jurema-imbira (Mimosa ophthalmocentra Mart. ex Benth.). For this, seeds were manually extracted from the pods of matrix plants and sown under greenhouse conditions in polystyrene trays and irrigated with brackish solutions calibrated to electrical conductivity of 1.5, 2.5, 3.5, 4.5 and 5.5 dS m -1 ; and a treatment with tap water with salinity level of 0.5 dS m -1 was used as control. The experiment was conducted in October 2013. Parameters assessed were: seedling emergence, emergence speed, seedling height, root length, stem diameter, dry mass of shoots, dry mass of roots and total dry mass of seedling. A completely randomized design was used with six treatments, and four replications each consisting of of 25 seeds per treatment. Adjustment of nonlinear and polynomial regression curves, which was used to estimate behavior of variables assessed was performed with aid of software Sigmaplot®. Salinity negatively affects all variables directly proportional to its increase in the irrigation water, with the greatest seedling development at a dose of 1.5 dS m -1 .

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Efeito da salinidade na emergência e crescimento inicial de plântulas de flamboyant

Cited by 12 publications

References 8 publications

LIMA BEAN ( Phaseolus lunatus L.) SEEDS EXPOSED TO DIFFERENT SALT CONCENTRATIONS AND TEMPERATURES

LIMA BEAN ( Phaseolus lunatus L.) SEEDS EXPOSED TO DIFFERENT SALT CONCENTRATIONS AND TEMPERATURES

Influência Da Salinidade Na Emergência E Crescimento Inicial De Mulungu

Emergence and early development of seedlings of Mimosa ophthalmocentra Mart. ex Benth.) irrigated with brackish water

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