Maturação fisiológica e dormência em sementes de jurema-de-embira (Mimosa ophthalmocentra)

Leite, Moadir de Sousa; Nogueira, Narjara Walessa; Freitas, Rômulo Magno Oliveira de; Leite, Tiago de Sousa; Guimarães, Pompeu Paes

doi:10.34062/afs.v6i2.7823

Cited by 7 publications

(6 citation statements)

References 13 publications

(14 reference statements)

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“…These results indicate that the green and brown fruits were harvested before the seeds acquired dormancy. Results reported in studies conducted by Nogueira et al (2013), Müller et al (2016) and Leite et al (2019) demonstrated that other species of the Fabaceae family also do not have dormancy at the point of maturity. Nogueira et al (2013) classified the fruits of Mimosa caesalpiniifolia Benth.…”

Section: Methodsmentioning

confidence: 91%

“…These authors attributed the reduction of germination in stage V to the possible acquisition of dormancy, but they did not apply dormancy overcoming treatments or tetrazolium tests to confirm this assumption. Leite et al (2019) classified the fruits of Mimosa ophthalmocentra Mart. Benth.…”

Section: Methodsmentioning

confidence: 99%

“…In addition to genetic and environmental factors, studies confirm that the degree of fruit and seed maturity also influences the establishment of dormancy (Nakagawa et al, 2007;Nogueira et al, 2013;Müller et al, 2016;Leite et al, 2019). The impediment of germination due to seed coat impermeability can be avoided if the seeds are collected at the point of physiological maturity (Cardoso, 2009).…”

Section: Introductionmentioning

confidence: 98%

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Dormancy of Bowdichia virgilioides Kunth seeds

Santos

Mendonça²,

Souza

2020

Científica

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The degree of maturity of fruits and seeds can influence the establishment of seed dormancy. Thus, the present study aimed to verify whether dormancy of B. virgilioides seeds depends on the degree of fruit maturity. Two experiments were carried out: in the first one, fruits at two maturity stages (green and brown) were collected from seven plants located in the municipality of Conceição da Feira, BA, Brazil. Germination tests were conducted in a completely randomized design in a 2 x 2 factorial scheme, with two levels of fruit maturity (yellowish green with purple edges and brown with blackish spots) and two treatments related to dormancy overcoming (without overcoming and with overcoming). For the second experiment, darkened fruits were collected from three plants located in the municipality of Cruz das Almas, BA, Brazil. Germination tests were conducted according to a completely randomized design with two treatments, seeds with and without dormancy overcoming. Dormancy in B. virgilioides seeds depends on the degree of fruit maturity. Dormancy occurs after the seventh week of floral anthesis when the fruits are predominantly black, dry and brittle.

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Section: Methodsmentioning

confidence: 91%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Dormancy of Bowdichia virgilioides Kunth seeds

Santos

Mendonça²,

Souza

2020

Científica

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“…The reduction in the water content during ripening is associated with the accumulation of reserve substances, which stabilized after 42 days with a dry matter of 0.44 g seed -1 , being especially controlled by factors such as the characteristics of the species or cultivar, chemical composition, and tegument composition, in addition to environmental factors. During the maturation stage, the occurrence of variation until stabilization in the water content, dry matter accumulation, and 1000-seed weight, which are dependent on the water content and seed dry matter at the time of analysis, has been reported by several authors Marcos Filho, 2015;Leite et al, 2019). The several stages involve physiological, morphological, and functional transformations from the moment when the ovule is fertilized, culminating in the point when the seeds reach the maximum dry matter content and a marked reduction in the water content .…”

Section: Seed Moisture and 1000-seed Weight Of The Bean Cultivar Amen...mentioning

confidence: 91%

PHYSIOLOGICAL PERFORMANCE OF SEEDS OF Phaseolus vulgaris L. AS A FUNCTION OF ZINC AND PHYSIOLOGICAL MATURITY

Lima,

Oliveira Cabral,

Henrique da Silva

et al. 2024

RevistaUnivap

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The objective of this study was to study the physiological quality of bean treated with levels of zinc during the physiological maturation stage. The work was carried out at Fazenda Ponte da Braúna and at the Seed Analysis Laboratory of the Center for Agricultural Sciences and Engineering at the Federal University of Espírito Santo. Bean seeds of the cultivar Peanut were treated with Zn at concentrations of 0; 2.5; 5.0; 7.5 and 10 g kg-1 of seeds and sown in the field. The variables analyzed were seed moisture, 1000-seed weight, length, width and thickness of pods and seeds, germination, germination speed index, shoot length, root length, shoot and root dry matter. The experimental design used was completely randomized, in the factorial 5 x 7 (zinc doses x maturation periods), with four replications of 25 seeds. The seeds of the bean cultivar Amendoim treated with zinc at 10 g kg-1 seeds showed the highest values of pod length, thickness, and width. The seeds of the bean cultivar Amendoim showed the highest germination means and GSI after 35 days from anthesis. The treatment of seeds of the bean cultivar Amendoim with zinc does not influence the seedling characteristics. Seed treatment with zinc does not interfere with the seed maturation time of the bean cultivar Amendoim. The physiological maturation of seeds of the bean cultivar Amendoim occurs after 42 days from anthesis. The seed water content of the bean cultivar Amendoim at the stage of physiological maturation is 19%

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“…(2018) para Sesbania virgata (Cav) Pers.,Leite et al (2019) para a espécie Mimosa ophthalmocentrae e Duarte et al (2020) para Lecythis lurida (Miers) também verificaram redução do teor de água…”

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Maturação fisiológica e dormência em sementes de Parkia platycephala Benth. (Fabaceae)

et al. 2022

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Em muitas leguminosas, a capacidade de germinação de sementes recém-colhidas é controlada por dois proces-sos antagônicos, o processo de maturação e o estabelecimento da dormência tegumentar. Assim, objetivou-se com base na mudança de coloração dos frutos identificar ao longo do processo de maturação de sementes de Parkia platycephala, quando: i) as sementes alcançam a capacidade de germinação e ii) a dormência do tegu-mento é imposta, além de avaliar a eficácia de métodos para superação da dormência da espécie. Foram reali-zados dois experimentos (I e II), sendo o primeiro um delineamento inteiramente casualizado, em fatorial 2 x 6 (com e sem quebra de dormência x seis estádios de maturação), e o segundo, em delineamento inteiramente casualizado, com 23 tratamentos para superação da dormência, ambos com quatro repetições de 25 sementes cada. Nos experimentos I e II foram avaliadas as variáveis: teor de umidade, porcentagem de germinação, índice de velocidade de germinação, comprimento da parte aérea e raiz primária, massa seca da parte aérea e do sistema radicular de plântulas. Os resultados mostraram um aumento gradativo na capacidade germinativa, no vigor e no estabelecimento do mecanismo de dormência com a redução do teor de água e ocorrência da maturação fisiológica. A capacidade de germinação das sementes é alcançada antes que a dormência seja instalada, porém, na ocasião, as sementes apresentam baixa qualidade fisiológica e elevado teor de água. A escarificação mecânica com lixa e a imersão em ácido sulfúrico por 20 minutos são os métodos mais eficientes para a quebra da dormência.

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Maturação fisiológica e dormência em sementes de jurema-de-embira (Mimosa ophthalmocentra)

Cited by 7 publications

References 13 publications

Dormancy of Bowdichia virgilioides Kunth seeds

Dormancy of Bowdichia virgilioides Kunth seeds

PHYSIOLOGICAL PERFORMANCE OF SEEDS OF Phaseolus vulgaris L. AS A FUNCTION OF ZINC AND PHYSIOLOGICAL MATURITY

Maturação fisiológica e dormência em sementes de Parkia platycephala Benth. (Fabaceae)

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