Germinação de sementes de cubiu (Solanum sessiliflorum Dunal)

Pereira, Márcio Dias; Santos, Carlos Eduardo Magalhães dos; Filho, Sebastião Martins

doi:10.5039/agraria.v6i1a962

Cited by 9 publications

(7 citation statements)

References 12 publications

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“…The obtained results indicate that, under favorable water availability, the seedling tends to invest more in shoot growth than in root growth. An increase in water availability, associated with gain in seedling dry matter, has also been observed by Pereira, Santos and Medeiros Filho (2011), who worked with seeds of Solanum sessiliflorum Dunal.…”

Section: Revmentioning

confidence: 53%

Germination of Chia Seeds in Different Substrates and Water Volumes

et al. 2019

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Water availability and substrate type are essential factors in seed germination tests, influencing imbibition and seedling development. The objective of this study was to evaluate the influence of two substrates and different water volumes on the germination and vigor of chia seeds. The experimental design was completely randomized in a 2 x 6 factorial scheme, which consisted of two substrates, paper towel (Germitest®) and blotting paper, soaked with six water volumes equivalent to 1.5, 2.0, 2.5, 3.0, 3.5, and 4.0 times their dry weight, in four replicates of 50 seeds each. Germination percentage, mean time of germination, shoot length, radicle length, shoot dry matter, radicle dry matter, total dry matter (seedling), and root/shoot ratio were evaluated. Based on our results, germination tests for seeds of chia should be conducted using blotting paper (on paper) as substrate, with a water volume of 2.5 to 4.0 times its dry weight. Chia seedlings grown on blotting paper showed greater growth and dry matter accumulation compared to those grown on paper towel.

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Section: Revmentioning

confidence: 53%

Germination of Chia Seeds in Different Substrates and Water Volumes

et al. 2019

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“…El osmoacondicionamiento confiere mayor precocidad a las semillas, esto reduce la pérdida de plántulas y propicia cultivos con mayor producción, observando una germinación rápida y uniforme. La temperatura que se manejó durante la investigación fue de 22ºC y HR 90% lo cual coincide con Pereira et al (2010), quienes reportaron que la temperatura tiene una marcada influencia en el proceso germinativo, no solo respecto a los porcentajes de germinación, sino también, sobre la velocidad de germinación. 'Purple' bajo condiciones controladas y tratamientos pregerminativos.…”

Section: Velocidad Media De Germinación (Vmg) Y Tiempo Medio De Germiunclassified

Efecto de tratamientos pregerminativos en semillas de Dianthus barbatus L. cv. ‘Purple’ bajo condiciones controladas

González-Amaya

Pita

Pinzón-Sandoval

et al. 2018

rcia

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RESUMENLos claveles son de las flores más apetecidas por sus excelentes características de duración y belleza. Sin embargo, la especie Dianthus barbatus L. cv. 'Purple', presenta problemas en la germinación de sus semillas, lo que conlleva incremento de los costos de producción. Por lo anterior el objetivo de la investigación fue evaluar diferentes tratamientos pregerminativos sobre la germinación de semillas de Dianthus barbatus L. cv 'Purple'. Para esto, se estableció un Diseño Completamente al Azar con diez tratamientos correspondientes a la combinación de tres dosis de KNO3 (150, 200, 250mg L-1) y tres tiempos de imbibición (6, 12, 24 horas) más el tratamiento testigo. Las variables evaluadas fueron: porcentaje de germinación (PG), agua absorbida, velocidad media de germinación (VMG), tiempo medio de germinación (TMG), porcentaje de adaptabilidad (PA). La aplicación de los tratamientos pregerminativos basados en la aplicación de KNO3 combinado con el tiempo de imbibición mostró un efecto positivo sobre el porcentaje de germinación, VMG, TMG, tasa de imbibición y adaptación en semillas de Dianthus barbatus L. cv. 'Purple' bajo condiciones controladas. El tratamiento que mejor respuesta generó fue la aplicación de KNO3 en una concentración de 250mg L-1 y seis horas de imbibición el cual presentó diferencias significativas (P≤0,05) frente al tratamiento testigo en la ABSTRACTCarnations are the most desired flowers because their excellent characteristics of endurance and beauty. However, the species Dianthus barbatus L. cv. 'Purple', face problems in the germination stage, which leads to increased production costs. Therefore, the objective of the research was to test different pre-germination treatments on the seed germination of Dianthus barbatus L. cv 'Purple'. A Completely Randomized Design was established with ten treatments corresponding to the combination of three doses of KNO3 (150, 200, 250 mg L-1) and three imbibition periods (6, 12, 24 hours) including the control treatment. The evaluated variables were: percentage of germination (PG), water absorbed, germination speed average (ASG), germination time average (ATG), percentage of adaptability (PA). The application of pre-germination treatments based on the application of KNO3 combined with the imbibition showed a positive effect on the percentage of, ASG, ATG, imbibition rate and adaptation in seeds of Dianthus barbatus L. cv. 'Purple' under controlled conditions. The treatment that generated the best response was the application of KNO3 at a concentration of 250 mg L-1 and six hours of imbibition, which presented significant differences (P≤0.05) compared to the control treatment in most of the evaluated variables. It becomes an important alternative in the reduction of production costs within the process of sexual propagation of D. barbatus L. cv 'Purple' under controlled conditions.

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“…Laviola et al (2006) obtiveram um IVG médio de apenas 2,70 para Solanum gilo. Para S. sessiliflorum, Lopes et al (2005) e Pereira et al (2011) registraram IVGs máximos variando entre 6,0 e 7,0.…”

Section: Propagação Por Sementesunclassified

“…Com relação à propagação por sementes, é notável a inexistência de estudos para espécies do gênero Cestrum e até mesmo para outras solanáceas ornamentais. Os estudos de propagação sexuada da família Solanaceae restringem-se às espécies de valor alimentício, sobretudo do gênero Solanum (MIRANDA et al, 1992;SOUZA et al, 1997;LOPES et al, 2005;LAVIOLA et al, 2006;GARCIA et al, 2008;PEREIRA et al, 2011).…”

Section: Introductionunclassified

PROPAGAÇÃO DE Cestrum corymbosum POR SEMENTES E ESTAQUIA

Blum¹,

Constantino²,

Souza³

et al. 2013

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Cestrum corymbosum é um arbusto ornamental nativo do Brasil. A pesquisa visou estudar sua propagação sexuada e vegetativa, avaliando a germinação e o crescimento e testando o efeito do tamanho das estacas e do ácido indolbutírico (AIB) no seu enraizamento e desenvolvimento. Para avaliar a germinação, foram utilizadas seis repetições de 100 sementes. Em seguida, 200 plântulas foram transferidas para embalagens individuais mantidas em canteiro. O experimento de propagação vegetativa, com delineamento inteiramente casualizado em arranjo fatorial 3 x 2, constituiu-se na combinação de três concentrações de AIB (0, 1000 e 2000 mg.L-1) e dois tamanhos de estacas (8 e 15 cm). As estacas foram plantadas em substrato comercial Plantmax HA®. No experimento de propagação sexuada, verificou-se elevada germinação (92%), assim como alta taxa de sobrevivência após repicagem para recipientes individuais (99,5%). Para o experimento de propagação vegetativa, foi detectada influência significativa do tamanho das estacas em relação à sobrevivência, enraizamento (P < 0,01) e número de folhas (P < 0,05). Estacas de 8 cm apresentaram melhor sobrevivência (93,3%) e enraizamento (91,3%). A aplicação de concentrações de AIB não resultou em diferenças significativas (P < 0,01), demonstrando não ser necessária para o enraizamento dessa espécie.Palavras-chave: Germinação; enraizamento; ácido indolbutírico; espécie nativa; Solanaceae.AbstractPropagation of Cestrum corymbosum by seeds and cuttings. Cestrum corymbosum is an ornamental bush native from Brazil. This research aimed to study the sexual and vegetative propagation of this species, evaluating germination and growth of the seedlings, and testing the influence of indolebutyric acid (IBA) and cuttings size on its rooting and development. In order to evaluate germination, six repetitions of 100 seeds were considered. After that, 200 seedlings have been transplanted to individual packages kept in a bed. The vegetative propagation experiment has been arranged in a 3 x 2 factorial completely randomized design that comprised the combination of three IBA concentrations (0, 1000 and 2000 mg.L-1) for two cuttings sizes (8 and 15 cm). The cuttings were planted in commercial substrate Plantmax HA®. A high germination (92%) has been verified. The survival after transplantation was very high (99.5%). It was detected statistically significant influence of the cuttings size on plants survival, rooting (P<0.01) and leaves number (P<0.05). The cuttings of 8 cm presented better survival (93.3%) and rooting (91.3%) rates. The treatment with IBA in distinct concentrations did not produce results with significant differences (P<0.01).Keywords: Germination; rooting; indolebutyric acid; native species; Solanaceae.

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Germinação de sementes de cubiu (Solanum sessiliflorum Dunal)

Cited by 9 publications

References 12 publications

Germination of Chia Seeds in Different Substrates and Water Volumes

Germination of Chia Seeds in Different Substrates and Water Volumes

Efecto de tratamientos pregerminativos en semillas de Dianthus barbatus L. cv. ‘Purple’ bajo condiciones controladas

PROPAGAÇÃO DE Cestrum corymbosum POR SEMENTES E ESTAQUIA

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