Temperaturas e substratos para germinação e vigor de sementes de Euterpe oleracea Mart

Gama, Juliana Simões Nobre; Monte, Denise Maria de Oliveira; Alves, Edna Ursulino; Bruno, Riselane de Lucena Alcântara; Júnior, Joel Martins Braga

doi:10.1590/s1806-66902010000400021

Cited by 10 publications

(10 citation statements)

References 8 publications

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“…(Ferreira et al 2014), which showed a high germination rate index after mechanical scarification with sandpapers. Seedling dry matter is an important variable because it analyzes growth and indicates the transfer of seed reserves to the embryonic axis, so that it estimates seed vigor proportionally to the dry matter content of seedlings (Custódio 2005, Gama et al 2010. L. albescens seedlings had a high dry matter content after scarification between sandpapers for 40 seconds, especially seeds collected from the population 2 (Tab.…”

Section: Treamentioning

confidence: 99%

Análise de sementes de Lupinus albescens Hook. & Arn

et al. 2019

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The objective of this study was to describe the dispersion, color, size and morphological characteristics of fruits and seeds of Lupinus albescens, as well as pre-germinative treatments, aspects of luminosity and seed conservation. Above twenty populations were collected in São Francisco de Assis/RS and Alegrete/RS, pre-germinative treatments (seven pre-germinative methods, scarification times and temperatures) were analyzed; photoblastic test (seeds scarified between sandpapers, submitted to 25ºC); imbibition curve (control and scarification treatments between sandpapers); seeds conservation (cold room in plastic bag and natural environment in paper bag). Evaluations: description of fruits, seeds and viability analysis, using a completely randomized design. The results showed dispersion by autocoria, brown coloration of fruits and seeds and some striped seeds. Superior pre-germinative treatment was between sandpapers, for 40 seconds and under 25ºC. Seeds are classified as neutral photoblasts and without dormancy. Natural environment and paper bag were suitable for storage.

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Section: Treamentioning

confidence: 99%

Análise de sementes de Lupinus albescens Hook. & Arn

et al. 2019

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“…The germination rate is a very important factor for seedling survival, influencing their development (Ritter et commercial Grand Rapids and Mônica had better results in the evaluations carried out in 2017; the others genotypes had the best results in 2016 (Table 7). Dry matter is a parameter of vigor evaluation and seedlings that present a higher weight have higher vigor and physiological quality (Gama et al, 2010). Vigorous seeds provide a higher transfer of dry matter from their reserve tissues to the embryonic axis in the germination stage, and this transfer is responsible for producing seedlings with a higher weight due to a higher dry matter accumulation (Nakagawa, 1999).…”

Section: Resultsmentioning

confidence: 99%

Yield and quality of seeds of lettuce genotypes produced under organic management

et al. 2019

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is one of the main vegetable species used in organic production. However, studies and research in the organic area are scarce. This study aimed to evaluate the yield and quality of seeds of lettuce genotypes produced in two consecutive years under an organic management system. Two plantations were installed under open field conditions corresponding to autumn/winter in 2016 and 2017. Ten lettuce genotypes were evaluated in four replications using a biofertilizer made from swine manure in the management and manual harvesting of seeds. Evaluations consisted of seed yield (in kg.ha−1), physical test (1000-seed weight), and germination and vigor test (first germination count, germination rate index, and seedling dry matter). The genotype Cubana and two Grand Rapids had higher yields under the tested conditions. Higher seed weights were recorded in 2017. Both genotypes Grand Rapids reached the minimum germination standard established for commercialization (80%). Vanda and AC 5058 showed a better performance for germination rate index and first germination count, while Cinderela had a better seedling dry matter. These varieties were promising for organic cultivation.

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“…O uso do lodo de esgoto favoreceu a produção de massa fresca e seca do cultivar 'Cereja Samambaia' nas concentrações de 362 t ha -1 e 485 t ha -1 e para o cultivar 'Cereja Carolina', a massa fresca, na concentração de 371 t ha -1 (Figura 1E e F). A massa seca é uma variável que quantifica o vigor das sementes, sendo aquelas plântulas que apresentam maior massa seca consideradas com maior vigor (GAMA et al, 2010). A partir destas concentrações houve redução da produção de massas associadas ao aumento da concentração de lodo de esgoto.…”

Section: Resultado E Discussãounclassified

Qualidade Fisiológica De Genótipos De Tomate Fertilizados Com Lodo De Esgoto

Fávaris

Lopes

Freitas

et al. 2016

Nucleus

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RESUMO:A análise do potencial fisiológico de sementes é essencial para o conhecimento do desempenho do lote de sementes na fase de propagação. Considerado como um material de grande potencial de impacto ambiental, o lodo de esgoto vem se destacando como insumo agrícola, podendo conter diversos teores de nutrientes. Objetivou-se com este trabalho analisar o crescimento inicial de plântulas de cultivares de tomate (Solanum lycopersicum L.) em substrato composto por biossólidos. Foram utilizadas sementes de tomate (Solanum lycopersicum L.) das cultivares 'Cereja Carolina' e 'Cereja Samambaia' sobre seis substratos compostos com areia e lodo de esgoto, sendo: areia pura (testemunha); areia + lodo (20 t ha -1 ); areia + lodo (80 t ha -1 ); areia + lodo (160 t ha -1 ); areia + lodo (320 t ha -1 ); e areia + lodo (520 t ha -1 ). Cada parcela experimental foi composta por quatro repetições de 25 sementes. Foram analisados: emergência (%), índice de velocidade de emergência (IVE), comprimento de parte aérea (mm) e da raiz (mm), massas fresca e seca das plântulas (mg plântula). Verificou-se que a cultivar 'Cereja Samambaia' apresentou médias superiores à cultivar 'Cereja Carolina' para as variáveis massas fresca e seca das plântulas. A maior produção das massas fresca e seca ocorre com uso do lodo de esgoto na concentração entre 362 t ha -1 e 485 t ha -1 . Palavras-chave: Solanum lycopersicum L. Massa orgânica. Resíduo. Crescimento inicial. SUMMMARY:The analysis of physiological potential of seeds is essential to the knowledge of the seed lot performance in the propagation phase. Considered with a great potential environmental impact material, the sewage sludge has emerged as agricultural input, and may contain different amounts of nutrients. The objective of this work to analyze the initial growth of seedlings of tomato cultivars (Solanum Lycopersicum L.) in substrate composed of biosolids. Tomato seeds were used (Solanum lycopersicum L.) cultivars 'Cherry Carolina "and" Cherry Fern' over six substrates compounds with sand and sewage sludge, as follows: pure sand (control); sand + sludge (20 t ha -1 ); sand + sludge (80 t ha -1 ); sand + sludge (160 t ha -1 ); sand + sludge (320 t ha -1 ); and sand + sludge (520 t ha -1 ). Each plot consisted of four replications of 25 seeds. They were analyzed: emergency (%), emergency velocity index (EVI), shoot length (mm) and root (mm), fresh and dry weight of seedlings (mg seedlings). It was found that the cultivar 'Cherry Fern' showed average higher than the cultivar 'Cherry Carolina' for the variable fresh and dry weight of seedlings. The highest yield of fresh and dry weight occurs with use of sewage sludge in concentrations between 362 t ha -1 and 485 t ha -1 .

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Temperaturas e substratos para germinação e vigor de sementes de Euterpe oleracea Mart

Cited by 10 publications

References 8 publications

Análise de sementes de Lupinus albescens Hook. & Arn

Análise de sementes de Lupinus albescens Hook. & Arn

Yield and quality of seeds of lettuce genotypes produced under organic management

Qualidade Fisiológica De Genótipos De Tomate Fertilizados Com Lodo De Esgoto

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