Qualidade fisiológica de sementes de pitangueira submetidas a diferentes procedimentos de secagem e substratos - Parte 1

Sena, Lúcia Helena de Moura; Matos, Valderez Pontes; Ferreira, Elaine Barros; Sales, Anna G. de F. A.; Pacheco, Mauro Vasconcelos

doi:10.1590/s1415-43662010000400009

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…Germination speed can be influenced by the texture of the substrate and, depending on the species, the seeds may (Martins et al, 2011), E. uniflora (Sena et al, 2010) and Adenanthera pavonina L. (Alves et al, 2015) in fine vermiculite. Basaplant ® and coarse vermiculite were the least adequate substrates for the germination of P. volublis seeds, because they led to the lowest percentages of germination and highest percentages of hard seeds.…”

Section: Resultsmentioning

confidence: 99%

“…Yakovlev and Eugenia uniflora L. (Varela et al, 2005;Sena et al, 2010), as examples of species that occur in the Amazon. For subtropical and tropical forest species, the optimal temperature for germination is usually situated between 20 and 30 ºC, since these temperatures occur in their regions of origin in the period favorable to natural germination (Borges & Toorop, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Temperature and substrate on Plukenetia volubilis L. seed germination

Silva

Vieira

Boneti

et al. 2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TThe objective of this work was to evaluate the effect of temperature and substrate on the germination of P. volubilis seeds. Seeds harvested from 25 matrix plants were submitted, in two studies, to conditions of (i) sowing in rolled paper towel at the temperatures of 10, 15, 20, 25, 30, 35, 40, and 45 °C, for the evaluation of germination, first count of germination, germination speed index and mean time for germination, and (ii) sowing in the substrates paper towel, sand, Bioplant®, Bioplant® and micron, superfine, fine, medium and coarse vermiculite. The same evaluations mentioned in the first study were conducted at the temperature of 30 o C, as well as plant growth. The treatment replicates were distributed in a completely randomized block design and the effects of temperature were compared by polynomial regression analysis. The substrates were compared by the Scott-Knott test at 0.05 probability level. The data show that the ideal range of temperature for the germination of P. volubilis is between 25 and 30 °C. The temperature of 20 °C is the minimum for germination and those above 35 °C are lethal to these seeds. The most favorable substrate for P. volubilis seed germination is micron or fine vermiculite.Temperatura e substrato na germinação de sementes de Plukenetia volubilis L. R E S U M OObjetivou-se, neste trabalho, avaliar o efeito de temperaturas e substratos na germinação de sementes de P. volubilis. Sementes colhidas em 25 plantas matrizes foram avaliadas em dois estudos: (i) semeadura em rolo de papel nas temperaturas 10, 15, 20, 25, 30, 35, 40 e 45 ºC, avaliando-se a germinação, primeira contagem, índice de velocidade de germinação e tempo médio de germinação; e (ii) semeadura nos substratos rolo de papel, entre areia, entre Basaplant®, entre Bioplant® e entre vermiculita mícron, superfina, fina, média e grossa; conduzindo-se a 30 ºC os mesmos testes descritos no primeiro estudo e também o crescimento de plântulas. Os dados foram analisados em delineamento inteiramente casualizado com análise de regressão polinomial para a avaliação das temperaturas. Para a comparação entre os substratos utilizou-se o teste de Scott Knott, a 0,05 de probabilidade. Conclui-se que a germinação de sementes de P. volubilis deve ser conduzida nas temperaturas de 25 a 30 o C. A temperatura de 20 o C é a mínima para a germinação e as acima de 35 o C são letais para essas sementes. O substrato mais favorável à germinação de sementes de P. volubilis é a vermiculita mícron ou fina.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Temperature and substrate on Plukenetia volubilis L. seed germination

Silva

Vieira

Boneti

et al. 2016

Rev. bras. eng. agríc. ambient.

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“…Thus, the seed propagation still prevails, despite all the implications that this technique may have. There are several reports that describe the influence of temperature, light, substrate, humidity and the fruit maturation stage in the germination processes of some of these species (VALIO;FERREIRA, 1992;MARTINS, 2003;ALEXANDRE et al, 2004;SENA et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Dormancy in native fruit seeds of the Brazilian South Region

et al. 2021

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The aim of the present study was to investigate whether seeds from six native fruit species ofthe South Brazilian regionhad any type of dormancy, as well as, to verify if they havephotoblastism. The work was carried out at the Plant Physiology Laboratoryofthe Federal Technological University of Paraná –Câmpus Dois Vizinhos, Paraná State, Brazil. The influence of photoperiod factors and techniques for overcoming dormancy were tested on the germination of Eugenia uniflora L.(Surinan cherry), Plinia peruviana(native jabuticaba), Plinia cauliflora(hybrid jabuticaba), Eugenia involucrataDC. (Rio Grande cherry), Myrcianthes pungens(guabiju) and Campomanesia guazumifolia(sete capoteiro). The seeds were exposed in a condition of total darkness or photoperiod of 24 hours, being the levels of one of factors tested. The techniques for breaking dormancy tested werethe immersion in gibberellic acid solution (200 mg L-1); stratification at 5°C for 30 days; immersion in water at room temperature for 24 hours; immersion in hot water (80°C) for five minutes; immersion in sulfuric acid solution (96%) for five minutes; and manual physical scarification with 120 grit sandpaper. The seeds were also tested without using any technique, making up the controlstreatments with or without light. The experimental design was completely randomized, in a 2 x 7 factorial scheme (luminosity x treatment for breaking dormancy), with four replications of 100 seeds. After 60 days, germination (%), percentage of accumulated germination, germination speed index and average germination time were analyzed. The seeds of most of the studied native species do not present dormancy or the effect of photoblastism, except for “sete capoteiro”seedswho are supposed to have morphophysiological dormancy, with negative photoblastism. The use of hot water or sulfuric acid in the seeds of native fruit trees is not recommended.

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“…Entre as restrições para o cultivo de espécies do gênero Eugenia estão a dificuldade de conservação das sementes e de multiplicação das plantas e a variabilidade genética (dificultando a seleção de matrizes) somada a baixa densidade e frequência de indivíduos nas áreas de ocorrência (Delgado & Barbedo, 2007;Franzon et al, 2010;Sena et al, 2010;Teixeira & Barbedo, 2012;Scalon et al, 2012;Camilo et al, 2013;Souza et al, 2013;Tonetto et al, 2013). Contudo, o fracionamento das sementes, com possibilidade de formação de mais de uma plântula normal, ampliaram as expectativas de multiplicação (Silva et al, 2005;Teixeira & Barbedo, 2012).…”

Section: Introductionunclassified

Coloração do Fruto e Substrato na Emergência e no Crescimento de Plantas de Eugenia calycina Cambess

et al. 2016

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RESUMOO objetivo do trabalho foi avaliar a influência da coloração dos frutos na emergência e no crescimento das plantas de Eugenia calycina Cambess (pitangueira-do-cerrado), assim como de substratos com diferentes proporções de material orgânico e estruturante. Palavras-chave: maturação do fruto, fruteiras nativas, pitangueira-do-cerrado, sementes. Fruit Coloring and Substrate in Emergence and Growth of Eugenia calycina Cambess Seedlings ABSTRACTThis study aimed to evaluate the influence of fruit coloring in emergence process and growth of Eugenia calycina Cambess seedlings, as well substrates with different proportions of organic and structuring material. Three experiments were conducted: the first of emergence; the second of plant growth, both with fruits of green color, orange/red, light red and dark red; and the third experiment was conducted to compare five mixture of Bioplant  supplemented with Vermiculita  and coconut i powder n the seedling growth, both in proportion of 20 and 40%. The fruit coloring did not influence the capacity of emergence, time (initial, mean and final), rate and synchrony of emergence of E. calycina seedlings. The growth of E. calycina seedlings is independent of fruit color up to 270 days. The Vermiculita  and -coconut powder supplemented by Bioplant  do not improved the plants growth up to 120 days of cultivation.

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Qualidade fisiológica de sementes de pitangueira submetidas a diferentes procedimentos de secagem e substratos - Parte 1

Cited by 6 publications

References 20 publications

Temperature and substrate on Plukenetia volubilis L. seed germination

Temperature and substrate on Plukenetia volubilis L. seed germination

Dormancy in native fruit seeds of the Brazilian South Region

Coloração do Fruto e Substrato na Emergência e no Crescimento de Plantas de Eugenia calycina Cambess

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