Utilização de diferentes tratamentos pré-germinativos para superação de dormência em sementes de Adenanthera pavonina L.

Silva, Gabriel Italo Novaes da; Araujo, Anna Beatriz Nogueira de; Ferraz, Allison Clênio Nogueira; Silva, Cleyson Xavier da; Silva, Monalisa Alves Diniz da

doi:10.17648/diversitas-journal-v5i2-1044

Cited by 4 publications

(4 citation statements)

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“…Therefore, they should be preferred over the use of H2SO4. Whereas, Silva et al (2020) recommended the use of manual Whereas, in a nursery for the production of seedlings, in general, the least onerous, fastest and most practical method is chosen, the most recommended, for the present case, would be mechanical scarification. Other authors have also verified, for other forest species, the efficiency of this method.…”

Section: Resultsmentioning

confidence: 97%

“…Possibly, because these treatments allowed for a greater wear in the integument of the seeds, without thereby damaging the embryo. This occurs because, according to Silva et al (2020), manual scarification by providing tegument ruptures, favors increased water soaking, this being the main step for the start of the germinative process. 13…”

Section: Resultsmentioning

confidence: 99%

“…80 for 20 seconds in the region opposite the hilum, followed by 20 minutes of soaking in water, obtaining 85% germination. E, por Silva et al (2020) that recommended manual scarification with water sandpaper on both sides of the integument and opposite the hilum for Adenanthera pavonina seeds. This is the method that provided, in this study, higher percentage of emergence and rate of emergence and therefore recommended as pre-germinative treatment.…”

Section: Mechanical Scarification As a Technique For Overcoming Tegum...mentioning

confidence: 99%

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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: 97%

Section: Resultsmentioning

confidence: 99%

Section: Mechanical Scarification As a Technique For Overcoming Tegum...mentioning

confidence: 99%

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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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“…No caso da propagação via sementes, a produção ganha estímulo quando se compreende possíveis impasses que venham a comprometer o desenvolvimento dos embriões. Lêdo (1977), estudando a causa da dormência de sementes de E. contortisiliquum, não observou a presença de inibidores de germinação nos embriões ou estruturas circundantes, concluindo assim que a dormência é devido à impermeabilidade do tegumento à água, o que é bastante comum em várias outras espécies florestais da família Fabaceae, como Delonix regia (Oliveira et al, 2018), Erythrina crista-galli L. (Mello et al, 2016), Schizolobium parahyba (Vellozo) S. F. Blake (Candido e Oliveira, 2018) e Adenanthera pavonina L. (Silva et al, 2020).…”

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Tratamentos térmicos para a superação de dormência em sementes de uma espécie arbórea brasileira

Silva

Lucas

Costa

et al. 2020

J. Biotechnol. Biodivers.

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Enterolobium contortisiliquum (Vell.) Morong., known as tamboril, is a promising species in the recovery of degraded areas. However, it presents integument dormancy in its seeds and it is necessary to find methods to overcome it. Therefore, the present study aimed to evaluate the dry heat efficiency on the viability and vigor of E. contortisiliquum seeds, as an alternative and practical method for overcoming dormancy. The experiment was conducted in the house of vegetation of the Specialized Agricultural Sciences Academic Unit of the Federal University of Rio Grande do Norte. The fruits, obtained from different matrices located in the municipality of Macaíba-RN, were manually processed. The heat treatments obtained through a drying oven during five minutes used: 60 (T1), 80 (T2), and 105ºC (T3), the mechanical scarification (T0) of the seeds were used as a mediating treatment of the efficiency of the others. The emergency, first emergency count, and the emergency speed index were evaluated. Observing the results obtained, the best performance corresponded to the scarified seeds. The thermal treatments in dry heat were not efficient to overcome the dormancy of E. contortisiliquum seeds when compared with the traditional method of mechanical scarification. However, the methodology presents practicality in its execution which can be considered advantageous. Therefore, new studies with different combinations of time and temperature for the species are encouraged.

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GERMINATIVE PERFORMANCE OF MULUNGÚ SEEDS (Ormosia grossa Rudd) AFTER DORMANCY OVERCOMING

et al. 2021

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Ormosia grossa Rudd is an Amazonian species that presents bicolor seeds, allowing its exploration for handicraft and decoration making. This paper aimed to analyze the influence of different methods to overcome dormancy on the germinative performance of Ormosia grossa seeds. To conduct the experiment, the following treatments were established: T1= scarification with 80-grit sandpaper and water immersion at room temperature for 24 hours; T2= puncturing and water immersion at room temperature for 24 hours; T3= scarification with 80-grit sandpaper; T4= puncturing; T5= immersion in water heated to 80 ºC for five minutes, and T6= Control - seeds without any treatment. The seeds germinate slowly and irregularly. Depending on the treatment, germination started between 10 and 32 days and, if there is no adequate pre-germinative treatment to overcome dormancy, it can exceed such time. The phytomass performance and seedling lengths were superior in the T1 and T2 treatments. The scarification by abrasiveness and puncturing treatments are efficient to overcome dormancy, thus increasing the speed (3.76 and 3.12) and germination percentage (98% and 96%) after ten days. The control was 0.01 (IVG), and germination of 37%. Therefore, it is recommended the method of scarification with sandpaper followed by seed imbibition in water at room temperature for 24 hours, as it provides the best seedling performance and germination.

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Utilização de diferentes tratamentos pré-germinativos para superação de dormência em sementes de Adenanthera pavonina L.

Cited by 4 publications

References 2 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.)

Tratamentos térmicos para a superação de dormência em sementes de uma espécie arbórea brasileira

GERMINATIVE PERFORMANCE OF MULUNGÚ SEEDS (Ormosia grossa Rudd) AFTER DORMANCY OVERCOMING

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