Efeito de 6-benzilaminopurina sobre a propagação in vitro de Mimosa caesalpiniifolia Benth. (Fabaceae)

Bezerra, Rafaela Maria de França; Aloufa, Magdi Ahmed Ibrahim; Freire, Fúlvio Aurélio de Morais; Santos, Daysilene Dantas dos

doi:10.1590/s0100-67622014000500001

Cited by 15 publications

(8 citation statements)

References 12 publications

(6 reference statements)

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“…The correct concentration of PGRs is essential for the specification and differentiation of morphogenetic responses and this is a species-dependent feature. For Mimosa caesalpiniifolia, another Fabaceae species, was also reported that the greatest number of morphogenetic responses was obtained in the presence of 4 mg L -1 BA and reduced responses in higher concentrations (> 6 mg L -1 ) of this same PGR (Bezerra et al, 2014). Similarly, García-Angulo et al (2018) showed that the increase over 5 mg L -1 BA significantly reduced the number of morphogenetic responses of Populus hybrids.…”

Section: Resultsmentioning

confidence: 89%

Kinetin and 6-benzyladenine induce different morphogenetic responses in cotyledonary segments of royal poinciana

et al. 2019

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Understanding the in vitro performance of royal poinciana explants cultured in media supplemented with different types and concentrations of cytokinins may aid in the optimization of regeneration systems established for this woody species. In the present study we evaluate the in vitro performance of royal poinciana cotyledonary explants cultured in the presence of high concentrations of 6-benzyladenine (BA) and kinetin (KIN). Cotyledonary segments obtained from in vitro germinated seedlings were inoculated in Murashige and Skoog (MS) medium, supplemented with different concentrations (1, 2, 4, 8 mg L-1) of BA or KIN. In the control treatment, no plant growth regulators (PGRs) were added. After 40 days of culture, regardless of the concentration used, the treatments supplemented with BA presented higher calli percentage and fresh mass compared to treatments supplemented with KIN. Adventitious shoots were mainly observed in BA-treatments. Histological analysis showed that adventitious shoots formed at the periphery of callus formed from mesophyll cells in the regions of the explant sectioning. The results obtained provide new information for the establishment of a micropropagation system for royal poinciana, an important ornamental tree species.

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Section: Resultsmentioning

confidence: 89%

Kinetin and 6-benzyladenine induce different morphogenetic responses in cotyledonary segments of royal poinciana

et al. 2019

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“…Foi possível observar, ainda, um aumento na porcentagem de contaminação conforme o aumento da concentração da citocinina. Os resultados corroboram os de Bezerra et al (2014), que também verificaram uma tendência a maiores índices de contaminação com o aumento na concentração de BAP em explantes de M. caesalpiniifolia. Nesse sentido, pode-se inferir que, possivelmente, concentrações elevadas da citocinina tenham apresentado efeito tóxico, comprometendo a multiplicação e o desenvolvimento do explante e, consequentemente, contribuído para sua degradação.…”

Section: Resultsunclassified

EFEITO DE 6-BENZILAMINOPURINA E ÁCIDO NAFTALENOACÉTICO SOBRE A PROPAGAÇÃO in vitro DE Hancornia speciosa

Oliveira

Freire

Aloufa

2016

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A mangabeira (Hancornia speciosa Gomes) é uma espécie arbórea nativa do Nordeste, de grande importância socioeconômica, ambiental e medicinal. Na última década, a intensificação da ação antrópica vem contribuindo para a redução significativa de suas áreas remanescentes, e, consequentemente, de sua diversidade genética, o que justifica a realização de estudos relacionados à propagação da espécie. O objetivo deste trabalho foi testar o efeito de diferentes concentrações de 6-benzilaminopurina (BAP) e ácido naftalenoacético (ANA) sobre a indução de brotações em explantes nodais de mangabeira. Estes foram obtidos de plântulas germinadas in vitro e inoculados em meio MS básico e MS suplementado com: 1,5; 2,5 e 3,5 mg.L-1 de BAP e 0,1 e 0,5 mg.L-1 de ANA e mantidos em sala de crescimento, durante 30 dias sob condições controladas de temperatura, fotoperíodo e luminosidade. O delineamento experimental utilizado foi o inteiramente casualizado com doze tratamentos, e três repetições, sendo cada repetição composta por 10 unidades experimentais. As variáveis observadas foram: formação de brotos, número de brotos por explante, presença de calos, contaminação e sobrevivência. Os dados foram avaliados estatisticamente através da análise de modelo linear generalizado. Os resultados indicaram diferença significativa entre os tratamentos com os reguladores de crescimento vegetal, para todas as variáveis. Dessa forma, na ausência de BAP e ANA os explantes apresentam-se mais responsivos em relação à taxa de multiplicação e ao número de brotações, sendo, portanto, desnecessário o uso desses reguladores de crescimento para a propagação in vitro de mangabeira.

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“…Similar results were observed by Paiva and Aloufa (2009) with Schinus terebinthifolius; however, there was two shoots in each nodal segment. The organogenesis of shoots in all concentrations of BAP, including in the absence of this growth regulator, may indicate that endogenous cytokinins induce apical and cotyledonary shoots, considering this hormone are synthetized in the roots and transported in the xylem vessels (Ishibashi et al, 2017;Bezerra et al, 2014).…”

Section: Experiments I: In Vitro Seed Germination In Different Supportmentioning

confidence: 99%

In vitro germination and micropropagation of Myracrodruon urundeuva Allemão (Anacardiaceae)

Nascimento

Mendonça

Júnior

et al. 2020

PCCM

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Myracrodruon urundeuva is a native tree species that stands out for the use of its wood and for medicinal purposes. Due to the multiple uses and extractive exploitation, this species has been threatened with extinction. Thus, it is important to develop strategies in order to ensure conservation and long-term exploitation. This work aimed to establish a protocol of in vitro seed germination and micropropagation of M. urundeuva. Different support agents (vermiculite and agar) and presence of sucrose were tested for in vitro germination, while different concentrations of BAP (0.0, 0.5, 1.0, and 2.0 mg L-1) and explant types (apical and cotyledonary nodes) were tested for multiplication. The use of vermiculite as a support agent favored in vitro germination of M. urundeuva, with germination percentage of 64.3% and 32% for vermiculite and agar, respectively. No significant differences were observed for the different BAP concentrations tested in multiplication and the treatment with 1.0 mg L-1 BAP presented higher values for most variables analyzed. Cotyledonary explants presented higher number of shoots (1.6 shoots) compared to the apical ones (1.1 shoots). Vermiculite may be used as a replacement for agar for in vitro seed germination and the combination of 1.0 mg L-1 BAP and cotyledonary explants may be used for in vitro multiplication of M. urundeuva. Furthermore, studies are needed to improve in vitro multiplication methods of this species.

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Efeito de 6-benzilaminopurina sobre a propagação in vitro de Mimosa caesalpiniifolia Benth. (Fabaceae)

Cited by 15 publications

References 12 publications

Kinetin and 6-benzyladenine induce different morphogenetic responses in cotyledonary segments of royal poinciana

Kinetin and 6-benzyladenine induce different morphogenetic responses in cotyledonary segments of royal poinciana

EFEITO DE 6-BENZILAMINOPURINA E ÁCIDO NAFTALENOACÉTICO SOBRE A PROPAGAÇÃO in vitro DE Hancornia speciosa

In vitro germination and micropropagation of Myracrodruon urundeuva Allemão (Anacardiaceae)

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