Teste de germinação em sementes de Cucumis metuliferus E. Mey

Alves, Charline Zaratin; Cândido, Ana Carina da Silva; Oliveira, Naiane de Departamento de Agronomia Cristina; Lourenço, Flávia Mendes dos Santos

doi:10.1590/s0103-84782014000200006

Cited by 3 publications

(4 citation statements)

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“…Therefore, placing the seeds in sand was inefficient to evaluate germination and vigor of quinoa. Similar results were obtained with Cucumis metuliferus seeds (Alves et al, 2014). Irrespective of substrate, quinoa seeds germinated in less time when they were exposed to 25, 30 and 20 to 30°C, differing from 15 and 20°C temperatures (Figure 1).…”

Section: Resultssupporting

confidence: 81%

“…Therefore, the ideal date for first count should be on the 2 nd day and for the second count on the 4 th day after sowing. The experiment followed similar criteria to define standard germination test with other crops (Alves et al, 2014(Alves et al, , 2015Caldeira et al, 2015;Oliveira et al, 2014). On soybean and maize, first and second count occurs at 5 to 8 and 4 to 7 days, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Standardizing germination tests for quinoa seeds

Souza¹,

Souza²,

Souza³

et al. 2017

Afr. J. Agric. Res.

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The standard germination tests have been commonly used on commercial grain crops, such as soybean, field beans, rice and maize. However, there are no standard tests for potential new crops; quinoa being one of them. This work is aimed at evaluating the effect of substrate, temperature and counting time in seed germination of quinoa. The following treatments were used in tests with seeds: on blotter paper, between blotter paper, on sand and within sand, all previously soaked with distilled water. These substrates were combined to the temperatures of 15, 20, 25, 30°C, and alternated between 20 to 30°C. The experiment was conducted on an entirely randomized factorial design 5 × 4 (temperature × substrate) with 4 repetitions. Normal seedlings, abnormal seedlings and dead seeds were counted until stabilized. The germination velocity index and mean time for germination were calculated. From the results, it was concluded that germination test of quinoa seeds should be conducted at 20 to 30°C alternate temperatures, on or between blotter paper, with initial count at 2 days and final count at 4 days.

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Section: Resultssupporting

confidence: 81%

Section: Resultsmentioning

confidence: 99%

Standardizing germination tests for quinoa seeds

Souza¹,

Souza²,

Souza³

et al. 2017

Afr. J. Agric. Res.

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“…At these temperatures, the on-paper and in-sand substrates, resulted in higher percentages when compared to lower temperatures, but their performance was less than that of the other two substrates. The better performance of the paper roll that that of the other substrates can be attributed to a greater contact area between the seeds and the substrate (ALVES et al, 2014). The contact area of the seed with the moistened substrate can be critical, both for triggering the germination, and for the speed of germination.…”

Section: Resultsmentioning

confidence: 99%

GERMINATION TEST IN SEEDS OF MELOTHRIA CAMPESTRIS (NAUDIN) H. SCHAEF. & S.S. RENNER

et al. 2016

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-The Cerrado occupies 25% of the Brazilian territory and is the second largest biome in South America, second only to the Amazon Rainforest. Hence, studies on the native species of the Cerrado are important for implementing conservation strategies. In this context, knowledge of the requirements and conditions for germination of seeds of these native species is essential. The Cerrado watermelon (Melothria campestris (Naudin) H. Schaef. & S.S. Renner) is a plant that is not cultivated, but has been used in revegetation projects in the countryside of the Cerrado because its fruits are fed upon by fauna in times of food shortage. The purpose of this study was to determine the most appropriate methodology for the germination of the Cerrado watermelon, by identifying the best-suited substrate, the optimal temperature, and the corresponding time taken for germination. The treatments consisted of four substrates: in a paper roll, on paper, in sand, and on sand; and four temperatures: 20, 25, and 30 °C (maintained constant), and a fourth temperature treatment that alternated 20-30 °C. The effect of the substrates and temperatures on seed performance was evaluated using the germination test, speed index, and average time for germination. The experimental design was fully randomized, with treatments distributed in a 4 × 4 (substrates × temperatures) factorial scheme, with four replications. Our results show that the temperature of 20 °C had a negative influence on germination in all substrates. Further, we found that the germination of the Cerrado watermelon seeds was best in a paper roll or on sand substrate, maintained at a constant temperature of 30 °C, or when temperature was alternated 20-30 °C, and the time required for germination stabilization was 30 days.Keywords: Cerrado watermelon. Substrate. Temperature. Cerrado. TESTE DE GERMINAÇÃO EM SEMENTES DE MELOTHRIA CAMPESTRIS (NAUDIN) H. SCHAEF. & S.S. RENNERRESUMO -O Cerrado ocupa 25% do território brasileiro e é o segundo maior bioma da América do Sul, perdendo somente para a Floresta Amazônica, sendo assim, estudos com espécies nativas são de fundamental importância para implementação de estratégias de conservação, no qual o conhecimento do comportamento da germinação das sementes é fundamental neste contexto. Melancia do Cerrado (Melothria campestris (Naudin) H. Schaef. & S.S. Renner) é uma frutífera não cultivada que tem sido utilizada em projetos de revegetação de ambientes campestres do Cerrado, pois seus frutos alimentam a fauna em épocas de escassez de alimentos. Objetivou-se determinar a metodologia quanto ao substrato, temperatura e tempo de contagem para o teste de germinação em melancia do Cerrado. Os tratamentos constaram de quatro substratos: rolo de papel, sobre papel, entre areia e sobre areia e quatro temperaturas: 20, 25 e 30 °C constantes e 20-30 °C alternada. O efeito dos substratos e temperaturas sobre o desempenho das sementes foi avaliado pelo teste de germinação, índice de velocidade e tempo médio de germinação. O delineamento experime...

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“…In the germination test, the area of contact between the moistened substrate and the seed is important and can be critical for both total germination and the germination rate (ALVES et al, 2014).…”

Section: Methodsmentioning

confidence: 99%

SUBSTRATES AND TEMPERATURES FOR THE GERMINATION OF SEEDS OF Senegalia tenuifolia (L.) BRITTON & ROSE

et al. 2016

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The Rules for Seed Analysis and the Instructions for Seed Analysis of Forest Species have no recommendations for conducting the S. tenuifolia germination test. Therefore, the aim of the present study was to evaluate different temperatures and substrates to perform the germination test of S. tenuifolia seeds. The experimental design was completely randomized in a factorial 4 × 3 design and consisted of four substrates (paper roll; on paper; on sand and on vermiculite) and three temperatures (25, 30 and 35 °C), with four replicates of 25 seeds. The percentage of normal seedlings, the germination speed index, the shoot length, root length and dry mass of seedlings were evaluated. The Tukey test was used at 5% probability. There was a significant interaction between the temperatures and substrates tested for all variables, indicating that there is at least one ideal combination of the two factors that can increase the germination of seeds. The germination and vigor of S. tenuifolia seeds are influenced by the temperature and by the substrate used in the germination test. The combination of the paper roll substrates with a temperature of 25 and 30 °C was suitable for the germination of S. tenuifolia seeds. Keywords:Caatinga. Fabaceae. Calumbi. SUBSTRATOS E TEMPERATURAS PARA GERMINAÇÃO DE SEMENTES DESenegalia tenuifolia (L.) BRITTON & ROSE RESUMO -As Regras de Análise de Sementes e as Instruções para Análise de Sementes de Espécies Florestais não possuem recomendações para condução do teste de germinação da S. tenuifolia. Neste sentido, o presente trabalho foi desenvolvido com o objetivo de avaliar diferentes temperaturas e substratos para a condução do teste de germinação de sementes de S. tenuifolia. O delineamento experimental utilizado foi inteiramente casualizado, em esquema fatorial 4x3, sendo quatro substratos (rolo de papel, sobre papel, areia e vermiculita) e três temperaturas (25, 30 e 35 ºC), com quatro repetições de 25 sementes. Foram avaliadas a porcentagem de plântulas normais; índice de velocidade de germinação; comprimento da parte aérea; comprimento de raízes e massa de matéria seca de plântulas. Utilizou-se o teste de Tukey a 5% de probabilidade. Houve interação significativa entre as temperaturas e substratos testados para todas as variáveis, indicando que existe pelo menos uma combinação ideal entre os dois fatores, potencializando o processo germinativo das sementes. A germinação e o vigor de sementes de S. tenuifolia são influenciados tanto pela temperatura como pelo substrato utilizado no teste de germinação. A combinação dos substratos rolo de papel com as temperaturas de 25 e 30 ºC mostraram-se adequados para a condução do teste de germinação em sementes de S. tenuifolia.Palavras-chave: Caatinga. Fabaceae. Calumbi.

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Teste de germinação em sementes de Cucumis metuliferus E. Mey

Abstract: RESUMO O kino (Cucumis metuliferus E. Mey) é uma olerícola de ampla distribuição geográfi ca, com aumento signifi cativo em relação à comercialização no mundo inteiro, devido não só à sua

Cited by 3 publications

References 7 publications

Standardizing germination tests for quinoa seeds

Standardizing germination tests for quinoa seeds

GERMINATION TEST IN SEEDS OF MELOTHRIA CAMPESTRIS (NAUDIN) H. SCHAEF. & S.S. RENNER

SUBSTRATES AND TEMPERATURES FOR THE GERMINATION OF SEEDS OF Senegalia tenuifolia (L.) BRITTON & ROSE

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