Methods of breaking seed dormancy for ornamental passion fruit species

Marostega, Thalita Neves; Luz, Petterson Baptista da; Tavares, Armando Reis; Neves, Leonarda Grillo; Sobrinho, Severino de Paiva

doi:10.14295/oh.v23i1.982

Cited by 10 publications

(12 citation statements)

References 9 publications

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“…Dispersing gibberellin through seed immersion proved to be efficient for breaking the physiological dormancy in many other species of Passiflora, including P. suberosa, P. morifolia, P. tenuifila (Marostega et al, 2017), P. edulis (Santos et al, 2013), and P. cincinnata Mast (Zucareli et al, 2009). On the other hand, the utilization of gibberellin in P. caerulea was ineffective, maybe because of the brief contact between seeds and solutiononly 30 minutes (Hossel et al, 2018).…”

Section: Resultsmentioning

confidence: 99%

“…On that account, treatments with GA 3 have been suggested to tackle the physiological dormancy of several Passiflora species, including P. cincinnata Mast. (Zucareli et al, 2009;Moura et al, 2018), P. ligularis (Cadorin et al, 2017), P. caerulea (Hossel et al, 2018), P. edulis f. flavicarpa (Lima et al, 2009;Cárdenas et al, 2013), P. suberosa, P. morifolia, and P. tenuifila (Marostega et al, 2017). Different doses of this plant regulator are used, as seed dormancy is linked to the genotype (Santos et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…Physical dormancy, specifically, is caused by the impermeable character of the tegument of both seeds and fruit, which totally or partially restricts water diffusion to the embryo. The literature on Passiflora seeds contain some promising treatments against it, which include the use of potassium nitrate (KNO 3 ) at 1%, for P. eichleriana, scarification with sandpaper, for P. micropetala (Marostega et al, 2017), and scarification with sandpaper and water bath at 50 ºC for 5 minutes, for P. cincinnata (Oliveira-Júnior et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2019

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“…hardiness and impermeability of the integuments), in the presence or absence of chemical inhibitors, or in the sensitivity to changes in environmental traits like soil salinity, soil pH or light intensity (Zucareli et al, 2009;Cárdenas-Hernández et al, 2011;Casierra-Posada et al, 2011;Montaña et al, 2014;dos Santos Moura et al, 2016). Moreover, seeds of many Passiflora species exhibit strong dormancy (Delanoy et al, 2006;Mendiondo & Amela García, 2009;de Oliveira Júnior et al, 2010;Rego et al, 2014;Neves Marostega et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Germinability and antioxidant metabolism in Passiflora caerulea L. seeds exposed to salt stress

Chaín,

Causin

2108

MACN

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P. caerulea is the Passiflora species with the widest distribution in Argentina. Despite the need to cultivate it to decrease the extraction impact on its natural populations, the information on how environmental factors affect seed germinability is scarce. In order to evaluate the greminative response and the role of the antioxidant metabolism against saline stress, freshly collected seeds were germinated at 26° C in the presence of 0 (control), 30, 60 or 90 mM NaCl. The percentage of germination, the content of soluble and carbonylated proteins, the activity of antioxidant enzymes and the generation of reactive oxygen species both in the pre-germination phase and during germination were evaluated. The removal of the aryl and the micropylar integument after 3 h imbibition proved to induce a rapid germination and activation of the enzymes catalase, glutathione S-transferase and peroxidases, together with an increase and a decrease in the generation of O 2 and H 2 O 2 , respectively, at the root apex. Even though the germination and activity of some of the studied enzymes decreased with the increase in external NaCl levels, when comparing populations of the control and 90 mM NaCl treatments having similar germination percentages, a marked induction of peroxidase activity was observed in the latter group. The proportion of carbonylated proteins did not differ among treatments, which suggests that, despite this species cannot be considered as halo-tolerant, the fact that the antioxidant metabolism efficiently contributed to prevent oxidative damage to the proteome may constitute an important mechanism to facilitate its establishment in environments with moderate salinity.Resumen: Germinabilidad y metabolismo antioxidante en semillas de Passiflora caerulea L. expuestas a estrés salino. P. caerulea es la especie Passiflora con más amplia distribución en Argentina. Si bien es necesario implementar prácticas de cultivo para disminuir el impacto debido a su extracción indiscriminada, la información sobre cómo los factores ambientales afectan la germinabilidad de sus semillas es escasa. A fin de evaluar la germinabilidad y el rol del metabolismo antioxidante frente al estrés salino, semillas frescas se germinaron en presencia de 0 (control), 30, 60 o 90 mM NaCl. Se evaluó el porcentaje de germinación, el contenido de proteínas solubles y carboniladas, la actividad de enzimas antioxidantes y la generación de especies reactivas de oxígeno tanto en la fase pre-germinativa como durante la germinación. La remoción del arilo y del tegumento micropilar después de 3 h de imbibición, indujo una rápida germinación y activación de las enzimas catalasa, glutatión S-transferasa y peroxidasas, junto con un aumento y una disminución en la generación de O 2 y H 2 O 2 , respectivamente, en el ápice radical. Si bien la germinabilidad y la actividad de algunas de las enzimas estudiadas disminuyeron con el incremento de NaCl, al comparar poblaciones con porcentajes de germinación similares de los tratamientos control y 90 mM NaCl, se observó...

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“…In general, species belonging to the genus Passiflora are spread asexually through grafting, cuttings and in vitro culture of tissues; and sexual pathway from seed, method most commonly used in most of these species (SILVA et al, 2018;FALEIRO et al, 2019). The period for germination has been estimated between 10 days and three months, with low germination rates and irregular seedling formation in some cases (DELANOY et al, 2006;MAROSTEGA et al, 2017). In this sense, Gutierrez et al (2011) indicate that these methodologies generate planting materials of heterogeneous quality, with low and variable germination percentages, low population of established plants and therefore reduced yields.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of pregerminative treatments in gulupa seeds (P. edulis f. edulis Sims).

et al. 2020

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Abstract The genus Passiflora, commonly known as fruits of passion, includes numerous species, including gulupa (Passiflora edulis f. edulis), of nutracetic and economic importance, both for consumption in nature and for its agro-industrial applicability. This research was developed to evaluate the effects of various pre-germinative treatments on the germination of gulupa seeds from the municipality of Ramiriquí (Boyacá), such as: exposure to hydrogen peroxide (H2O2), hypochlorite of sodium (NaOCl), gibberellic acid (GA3), distilled water imbibition and stratification at 4 °C, in varying concentrations and exposure times (24 and 48 hours), using an experimental design completely random, with three repetitions of 50 seed each one. Statistical analysis showed significant differences between treatments, with H2O2 being 15% the most effective, with a germination percentage (PG) of 88% in exposed seeds for 48 hours. In the presence of NaOCl the percentages were lower 36 - 40%. GA3 at 100 ppm for 24 hours recorded 51% PG, at the other concentrations of this growth regulator and exposure times this value was lower. The use of H2O2 has not been reported as a treatment to induce germination in the genus Passiflora. These results can be applied for the treatment of seeds in plant species can be a viable, effective, economical and easily applicable alternative.

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Methods of breaking seed dormancy for ornamental passion fruit species

Cited by 10 publications

References 9 publications

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

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

Germinability and antioxidant metabolism in Passiflora caerulea L. seeds exposed to salt stress

Evaluation of pregerminative treatments in gulupa seeds (P. edulis f. edulis Sims).

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