TRATAMENTOS PRÉ-GERMINATIVOS EM SEMENTES DE Mimosa strobiliflora BURKART

Biondi, Daniela; Leal, Luciana

doi:10.5380/rsa.v9i2.11013

Cited by 6 publications

(5 citation statements)

References 1 publication

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“…Of the various laboratory treatments used to break PY in seeds of the 36 species of Mimosa , mechanical scarification, wet heat and chemical scarification (immersion in sulphuric acid) were the most frequently used treatments, but mechanical scarification was the most effective treatment in breaking PY of Mimosa seeds ( Table 2 ). High temperatures can break PY in many species of Mimosa , but wet heat was more efficient for dormancy-break than dry heat for seeds of M. tenuiflora ( Araujo & Andrade, 1983 ), M. bimucronata ( Geisler et al, 2017 ), M. diplotricha ( Nawa, 2014 ; Aigbokhan, Osazuwa-Peters & Ilubon, 2010 ), M. regnellii ( Fowler & Carpanezzi, 1997 ), M. dolens ( Leal & Biondi, 2007 ), M. caesalpiniifolia ( Leal et al, 2008 ), M. strobiliflora ( Biondi & Leal, 2008 ), M. pudica ( Chauhan & Johnson, 2009 ), M. setosa ( Sperandio, Lopes & Matheus, 2013 ) and M. flocculosa ( Ribeiro et al, 2020 ).…”

Section: Resultsmentioning

confidence: 99%

Methods of breaking physical dormancy in seeds of the invasive weed Mimosa pudica (Fabaceae) and a comparison with 36 other species in the genus

Baskin

et al. 2022

PeerJ

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The herbaceous perennial legume Mimosa pudica is an invasive weed in many tropical and subtropical regions and a serious problem for farmers since it is difficult to eliminate from crop field by hand. Moreover, it has water impermeable seeds, i.e., physical dormancy (PY), which could persist in the soil seed bank for a long period of time, thus making it a big challenge to control. The aims of this study were to test the effect of various laboratory methods on breaking PY in seeds of M. pudica, to identify the site(s) of water entry into seeds of M. pudica and compare results of dormancy-breaking methods for seeds of M. pudica with those of 36 other species of Mimosa reported in the literature. Mechanical scarification, wet heat and cycles of wet heat and ice water effectively broke PY in seeds of M. pudica. Following wet heat at 80 °C for 10 min, water uptake was via the hilar region but not the pleurogram; small cracks made in the pleurogram by this treatment were not deep enough for water to enter the seed. Neither tolerance to summer temperatures nor PY is likely to be the cause of invasiveness of this species, since seeds of rare and endemic species of Mimosa also tolerate summer temperatures and have PY.

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Section: Resultsmentioning

confidence: 99%

Methods of breaking physical dormancy in seeds of the invasive weed Mimosa pudica (Fabaceae) and a comparison with 36 other species in the genus

Baskin

et al. 2022

PeerJ

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“…with GA 3 at concentrations of 0.5 and 1.0% increased the germination process and decreased the average germination time (Souza et al, 2018). The treatment of imperial bromeliad seeds Alcantarea imperialis (Carriere) Harms (Bromeliaceae) with 5.0 mg • L -1 GA 3 promoted greater germinability in relation to the other treatments (Bonin et al, 2010).…”

Section: Effect Of Ga 3 On Dyckia Speciesmentioning

confidence: 99%

Enhanced germination of seeds native to Brazil: A comparative analysis between free and nanoencapsulated gibberellic acid in Dyckia sp. (Bromeliaceae)

de Paula,

Guariz,

de Moraes

et al. 2023

Folia Horticulturae

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Brazil is home to a great diversity of species of the genus Dyckia. However, many of these species are threatened due to habitat destruction and predatory exploitation. An alternative to conserving these plants is sexual propagation using plant regulators to stimulate germination. Gibberellic acid (GA3) is an effective regulator in this process, but its instability and ease of degradation pose challenges. Therefore, nanoencapsulation of GA3 could be used to protect the molecule and allow controlled release. In this study, the effects of different doses of GA3 were evaluated on the germination of four species: D. cabrerae, D. dusenii, D. pottiorum and D. walteriana. The first stage consisted of soaking the seeds in different concentrations of GA3, in which the species D. dusenii and D. walteriana showed significant responses to GA3, with an increase from 35% to more than 60% germination. However, the species D. cabrerae and D. pottiorum responded positively to GA3 only in vegetative growth parameters. In the second stage, the use of nanoparticles of alginate/chitosan (NP ALG/CS) and chitosan/tripolyphosphate (NP CS/TPP) containing GA3 was compared with free GA3 and with NPs without GA3. It was verified that the use of nanoencapsulated GA3 resulted in a more efficient germination response in D. walteriana seeds, using smaller doses of the regulator (between 0.75 mg · L−1 and 1.0 mg · L−1), mainly with the ALG/ CS NPs. Therefore, the use of GA3 is recommended for D. dusenii and D. walteriana, and for the latter, nanoparticles containing ALG/CS-GA3 allow a reduction in the required dose.

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“…Para os testes, as sementes foram escolhidas aleatoriamente (PEREIRA et al, 2009) e nenhum tipo de desinfestação prévia foi realizado. Ao todo 600 sementes foram utilizadas, sendo dispostas em quadruplicatas de unidades experimentais de 25 sementes para os diferentes tratamentos pré-germinativos de luz e temperatura (Tabela 1, BONIN et al, 2010).…”

Section: Obtenção E Triagem Do Materials Vegetalunclassified

Remojo de semillas de Alcantarea imperialis (Carrière) Harms en tratamientos térmicos previos a la germinación bajo dos condiciones de luminosidad

Freitas

Moura

2023

Revista Vértices

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O objetivo deste estudo foi investigar a ação da luz e de tratamentos térmicos pré-germinativos na embebição de sementes de Alcantarea imperialis. As sementes foram dispostas em unidades experimentais de 25 sementes sem desinfestação prévia e submetidas a altas e baixas temperaturas e à ausência e presença de luz. Os resultados mostraram a germinação das sementes de A. imperialis somente na presença de luz, apresentando diferenças na absorção de água entre os tratamentos térmicos ao longo do tempo e confirmando o comportamento trifásico de embebição. Apesar das diferenças encontradas entre os tratamentos, a germinação foi baixa, sugerindo que o processo possa ter sido influenciado pela viabilidade das sementes e por processos hídricos puramente físicos. Nesse sentido, ressalta-se a importância de procedimentos de desinfestação e testes de vigor, bem como a necessidade de estudos futuros das relações hídricas das sementes dessa espécie.

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TRATAMENTOS PRÉ-GERMINATIVOS EM SEMENTES DE Mimosa strobiliflora BURKART

Cited by 6 publications

References 1 publication

Methods of breaking physical dormancy in seeds of the invasive weed Mimosa pudica (Fabaceae) and a comparison with 36 other species in the genus

Methods of breaking physical dormancy in seeds of the invasive weed Mimosa pudica (Fabaceae) and a comparison with 36 other species in the genus

Enhanced germination of seeds native to Brazil: A comparative analysis between free and nanoencapsulated gibberellic acid in Dyckia sp. (Bromeliaceae)

Remojo de semillas de Alcantarea imperialis (Carrière) Harms en tratamientos térmicos previos a la germinación bajo dos condiciones de luminosidad

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