Tratamentos pré-germinativos em sementes de granadilha (Passiflora ligularis)

Cadorin, Danielle Acco; Villa, Fabíola; Dalastra, Graciela Maiara; Heberle, Karina; Rotili, Maria Cristina Copello

doi:10.5965/223811711632017256

Cited by 3 publications

(2 citation statements)

References 9 publications

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“…The highest results for ASG were observed on treatments 1000 mg L -1 GA 3 for 5 hours (T 4 ) and sandpaper + 400 mg L -1 GA 3 for 5 hours (T 5 ). Cadorin et al (2017), investigating pregerminative treatments with temperature and gibberellic acid in Passiflora ligularis seeds, observed a reduction on time of germination by imbibing the seeds in 100 mg L -1 GA 3 for 15 minutes when compared to seeds without treatment. Gibberellins are efficient in overcoming seed dormancy, because they are involved in modulating the development of the plant cycle, increasing the growth of the embryo and controlling the growth of the embryonic axis (Taiz and Zeiger, 2013;Cavusoglu and Sulusoglu, 2015).…”

Section: Resultsmentioning

confidence: 99%

Overcoming seed dormancy in Passiflora species

Loffler

Lima

Sobrinho

et al. 2022

Idesia

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The knowledge about aspects related to seed germination are extremely important to the propagation of Passiflora species. Considering the diversity of Passiflora species and the need of studies that can elucidate the germination process of Passiflora seeds this study aimed was to evaluate methods to overcome seed dormancy in two Passiflora species (P. morifolia and P. cincinnata) by pre-germinative treatments as physical scarification, immersion in gibberellic acid (GA 3 ) and Promalin ® (GA 4+7 + N-(phenylmethyl) -aminopurine). To dormancy overcoming, the pre-germinative treatments were: scarification in sandpaper; immersion in water at 50 ºC for 5 minutes; imbibition in 400, 1000, 2000 and 3000 mg L -1 GA 3 for 5 hours; scarification in sandpaper + imbibition in 400, 1000, 2000 and 3000 mg L -1 GA 3 for 5 hours; and imbibition in 0.03, 0.45, 0.90 and 2% Promalin ® for 6 and 12 hours. The treatments were distributed in a completely randomized design, with four repetitions of 25 seeds. The data were submitted to variance analysis and the averages compared by Tukey test and Scott-Knott, respectively, at 5% of probability using the software SISVAR. Germinability, germination time, germination velocity, uncertainty and germination synchrony were evaluated. The results showed that 0.45, 0.90 and 2% Promalin ® for 6 and 12 hours were effective to overcome the seed dormancy in P. cincinnata. The treatment 1000 mg L-1 GA 3 achieved the highest result to overcome the dormancy in P. morifolia seeds.

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Section: Resultsmentioning

confidence: 99%

Overcoming seed dormancy in Passiflora species

Loffler

Lima

Sobrinho

et al. 2022

Idesia

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“…Os resultados para a germinação de sementes de espécies frutíferas obtidos em laboratório podem ser utilizados para predizer o seu comportamento germinativo e o desenvolvimento das plântulas em condições naturais, em seu ambiente de cultivo (Cadorin et al, 2017). Portanto, as sementes devem apresentar alta porcentagem de germinação, sincronia e rapidez no desenvolvimento das mudas durante a sua fase de produção, para que esta seja economicamente viável.…”

Section: Introductionunclassified

Biometria e embebição de sementes de Passiflora spp. submetidas a tratamentos para superação de dormência tegumentar

Nascimento

Otoni

Alexandre

2022

RSD

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Objetivou-se estudar as curvas de embebição das sementes a fim de determinar se o tegumento funciona como barreira para a absorção de água prejudicando o processo de germinação. O delineamento experimental utilizado foi o inteiramente casualizado, conduzidos com quatro repetições de 25 sementes retiradas de frutos maduros de cinco espécies de Passifloras, sendo P. edulis f. flavicarpa, P. edulis Sims, P. alata Curtis, P. alata spp, P. mucronata Lam. Foram utilizados dois tratamentos: T0 semente integra T1 semente com tegumento incisado na lateral. As sementes foram pesadas antes da imersão em água, e após em intervalos de uma hora até as primeiras 09 horas, após a cada 24 horas, finalizando com 240 horas de análise. Os resultados foram expressos em porcentagens. Nas sementes incisadas, foi observado que o ganho de água ocorreu com maior velocidade nas primeiras horas, sendo que essas sementes tiveram um aumento médio de 18,8 a 37,5% quando comparadas ao início da do processo de embebição e nas sementes integras média de 12,2 a 26,7%. Sementes de Passifloras, seguem o padrão trifásico de absorção de água, sendo a fase I compreendida entre zero e 20 horas, a fase II entre 20 e 180 horas e a fase III foi observada apenas em P. edulis Sims com 220 horas. Conclui-se que a velocidade de germinação das sementes é influenciada positivamente pela incisão, evidenciando sua dormência fisiológica.

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Investigation of dormancy and storage potential of seeds of yellow passion fruit

et al. 2019

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Passiflora actinia Hooker is a passion fruit species native to Brazil, typically found in the Atlantic and Araucaria Forests. It has economic relevance (edible fruit) and medicinal value (sedative and anxiolytic properties), in addition to being used for vegetative propagation, as rootstock for other Passiflora species. This study aimed at investigating the occurrence of dormancy in P. actinia seeds, and at evaluating their storage potential. The germination test considered different combinations of temperature and lighting regimes, whereas seed dormancy was assessed using different germination-inducing treatments (tegument cutting, warm water immersion, and gibberellin application). Seed viability during storage was also appraised. The results showed that seed germination should be conducted on paper at the alternating temperature of 20-30 °C, without lighting. Also, newly-harvested seeds presented physical and physiological dormancies. The immersion of seeds in water at 40 °C or 50 °C (for 5 or 10 minutes) proved to be efficient in breaking the physical dormancy. Physiological dormancy, in turn, was successfully interrupted by applying 100 mg. L-1 of gibberellic acid on the substrate paper. The storage of seeds under refrigeration, inside hermetically sealed polyethylene packaging, preserved their physiological quality for up to nine months.

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Tratamentos pré-germinativos em sementes de granadilha (Passiflora ligularis)

Cited by 3 publications

References 9 publications

Overcoming seed dormancy in Passiflora species

Overcoming seed dormancy in Passiflora species

Biometria e embebição de sementes de Passiflora spp. submetidas a tratamentos para superação de dormência tegumentar

Investigation of dormancy and storage potential of seeds of yellow passion fruit

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