SUPERAÇÃO DE DORMÊNCIA TEGUMENTAR DE SEMENTES DA PATA DE VACA (Bauhinia forficata Link)

Ronchi, Helena Souza; Bonfim, Filipe Pereira Giardini; Honório, Isabela Cristina Gomes; Capaz, Raquel Popolo Silveira; Hernandes, Isabela

doi:10.18677/enciclopedia_biosfera_2016_114

Cited by 3 publications

(3 citation statements)

References 6 publications

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“…For other forest species, immersion in H2SO4 was also not efficient for overcoming seed dormancy. As in the cases of Bauhinia forficata (Ronchi et al, 2016); Schizolobium parahyba (Candido e Oliveira, 2018); ofAcacia mangium (Fernandes et al, 2018); and ofSchizolobium amazonicum (Carvalho et al, 2019).…”

Section: Resultsmentioning

confidence: 99%

Chemical and Mechanical Scarification as Techniques for Overcoming Dormance in Red Tent Seeds (Adenanthera pavonina L.)

Vieira,

Araujo,

Souza

et al. 2024

RGSA

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Purpose: Evaluate chemical and mechanical scarification techniques, as methods for overcoming dormancy in red vine seeds. Theoretical Framework: Based on scientific articles found on search engines and books in the field of seeds, types of forest seeds, types of dormancy in forest seeds and techniques for overcoming dormancy. In order to support the explanation of how techniques for overcoming dormancy are related to the rate and time of germination of red seed seeds, and how germination time can subsequently affect the quantity of seedlings produced, as well as their initial growth. Method: The experiment was installed to test the following treatments: T0 – without scarification; T1 – mechanical scarification; T2 chemical scarification with 80% H2SO4 for half an hour; T3 – chemical scarification with 80% H2SO4 for one hour; T4 – chemical scarification with 0.4% KNO3 for half an hour; T5 – chemical scarification with 0.4% KNO3 for one hour. The design used was completely randomized, with six treatments, five replications and 20 seeds in each replication. At the end of 30 days, counting from the beginning of germination, the following variables were evaluated: germination speed index (IVG), average germination time (TMG), germination percentage (G) and germination speed index (IVG). Results and Conclusion: The most efficient methods for germinating the red tent seeds were mechanical scarification with sandpaper and immersion in 0.4% KNO3 for half an hour. However, mechanical scarification would be the most easily used and least expensive method for producing seedlings in nurseries. Research Implications: These results indicate that the mechanical scarification technique is an efficient method for overcoming the dormancy of the red tent, which is integumentary. Understanding the most efficient and effective techniques for overcoming dormancy in seeds of species that present this characteristic is important to allow, within the nursery, germination to occur quickly and uniformly. Consequently, making it possible to obtain seedlings with more uniform sizes, even though these are produced from seeds. Originality/Value: A high germination rate and uniform initial growth are important factors within the nursery, especially if it is of a commercial nature, but also for the restoration of areas, because it allows seedlings to be obtained in less time.

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Section: Resultsmentioning

confidence: 99%

Chemical and Mechanical Scarification as Techniques for Overcoming Dormance in Red Tent Seeds (Adenanthera pavonina L.)

Vieira,

Araujo,

Souza

et al. 2024

RGSA

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“…1A) [22,23]. In relation to the imbibition in water at 80ºC (T5), it can be inferred that this probably caused the death of the embryo at the end of the experiment, was observed that the seeds were deteriorated, what caused a soft and rotted tegument, since under abiotic stress reactive oxygen species are formed and cause oxidative damages to many cellular components like cell wall and cell membranes, what could explain the embryo death [22][23][24][25][26].…”

Section: Seed Coat Ormancy Overcomementioning

confidence: 99%

Overcoming Dormancy and Influence of Light on the Physiological Quality of Senna cana (Fabaceae) Seeds

Medeiros

Feliciano

Matos

et al. 2019

JEAI

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Environmental factors affect the germination process, like the presence of seed coat and the quality of light; these informations are still scarce for many native species from Brazil, especially for Senna cana, which there are no adequate standards and methodologies to be used in germination tests. The aim of this research was to recommend adequate pre-germinative treatment(s) to overcome seed dormancy, and determine the degree of influence of different light regimes in seed germination of S. cana. Two experiments were carried out: T1-evaluation of different methods of dormancy overcoming (intact seeds (control), T2-imbibition of the intact seeds for 24 hours (in distilled water), T3-scarified seeds with sandpaper n° 100 in the hilum opposite region, T4-scarified seeds with sandpaper n° 100 in the region the hilo opposite region and imbibition in water (in distilled water) for 24 hours; T5-imbibition in water at 80°C); 2-Influence of light quality on seed germination and vigor (white light, red light, far red light and absence of light). The evaluated parameters were: first JEAI, 32(5): 1-9, 2019; Article no.JEAI.47671 2 germination count, percentage of germination, IVG (Germination speed index), MGT (Mean germination time). Treatments were compared by Tukey at 5% probability. The best method for overcoming seed dormancy was mechanical scarification with sandpaper nº 100. The germination of the seeds of S. cana can be classified as indifferent to the luminosity, despite germinative response be greater under white and red light. Original Research Article

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“…Sementes que não foram imersas em ácido apresentaram o menor valor de condutividade (147,53 µS cm -1 g -1 ) em função de não haver danos ao tegumento da semente. Resultados semelhantes foram observados em Bauhinia forficata Link, em que a imersão das sementes em ácido sulfúrico por 5 minutos proporcionou o maior valor de condutividade elétrica em relação à testemunha sem superação de dormência e aos demais tratamentos (RONCHI et al, 2016).…”

Section: Escarificação Químicaunclassified

ESCARIFICAÇÃO MECÂNICA E QUÍMICA NA GERMINAÇÃO DE SEMENTES DE Schinus terebinthifolius Raddi

Saldanha¹,

Moro²,

Missio³

et al. 2017

Enci Bio

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RESUMO A espécie Schinus terebinthifolius Raddi pertencente à família Anacardiaceae ocorre no Brasil desde o estado do Pernambuco até o Rio Grande do Sul. É amplamente utilizada na recomposição de áreas degradadas e arborização urbana, apresenta também importantes propriedades fitoquímicas. Tendo em vista a relevância econômica da espécie, a produção de mudas se torna extremamente importante, entretanto, por apresentar dificuldades de germinação, a propagação é dificultada. Assim, objetivou-se avaliar diferentes métodos de escarificação mecânica e química no estímulo da germinação de sementes. O delineamento experimental foi o inteiramente casualizado, com quatro repetições de 50 sementes em cada tratamento. As avaliações foram realizadas a cada sete dias, durante 28 dias após a inoculação, sendo avaliadas as seguintes características: condutividade elétrica, índice de velocidade de germinação (IVG), primeira contagem de germinação, germinação acumulada, sementes mortas e firmes. A escarificação de sementes de aroeira-vermelha com ácido sulfúrico por 30 minutos ou 30 segundos com lixa P80 oferece novas possibilidades para o aumento da germinação de sementes de S. terebinthifolius, podendo ser aplicado por viveiristas para a produção de mudas em larga escala. PALAVRAS-CHAVE: aroeira-vermelha, Anacardiaceae, dormência.

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SUPERAÇÃO DE DORMÊNCIA TEGUMENTAR DE SEMENTES DA PATA DE VACA (Bauhinia forficata Link)

Cited by 3 publications

References 6 publications

Chemical and Mechanical Scarification as Techniques for Overcoming Dormance in Red Tent Seeds (Adenanthera pavonina L.)

Chemical and Mechanical Scarification as Techniques for Overcoming Dormance in Red Tent Seeds (Adenanthera pavonina L.)

Overcoming Dormancy and Influence of Light on the Physiological Quality of Senna cana (Fabaceae) Seeds

ESCARIFICAÇÃO MECÂNICA E QUÍMICA NA GERMINAÇÃO DE SEMENTES DE Schinus terebinthifolius Raddi

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