Análise Ecofisiológica De Genipa Americana L. Em Banco De Sementes Induzido

Salla, Francesca; José, Anderson Cleiton; Faria, José Márcio Rocha

doi:10.1590/0104776020162212047

Cited by 5 publications

(6 citation statements)

References 12 publications

(9 reference statements)

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“…Still according to the equations obtained (Figures 1 and 2), it is expected that, after 15 days of storage, seeds packed in SP present values of water content and percentage of germination of 15.5% and 82%, respectively, of 14.6% and 60.8% at 45 days and of 13.1% and 51.4% at 60 days. This is in agreement with the results obtained by Salla, José and Faria (2016), who showed, in a study on the behavior of genotype jenipapo seeds with 56% humidity and 96% germination, that drying to 30 and 20% humidity did not interfere. However, when the water content is reduced to 15%, 10% and 5%, reductions in seed viability are observed for 58, 41 and 1%, respectively.…”

Section: Resultssupporting

confidence: 93%

“…According to some researchers, jenipapo seeds are classified as intermediate behavior in storage NASCIMENTO, 2000;SALOMÃO, 2004;FERREIRA et al, 2007;MAGISTRALI et al, 2013), with a short longevity, and that they would be able to tolerate storage humidity between 7% and 10%, which is not in accordance with this experiment, where the seeds were not able to tolerate desiccation at 15% of water content and below. However, the results obtained from this study agree with Oliveira et al (2011) and Salla, José and Faria (2016), that also showed viability reduction when seeds were dried to around 15%.…”

Section: Resultssupporting

confidence: 87%

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Physiological potential of jenipapo seeds stored in different packages

Arruda¹,

Vazquez²,

Júnior³

et al. 2018

Biosci. J.

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Seed storage through the reduction of its water content is an important strategy for the conservation of many plant species, but some, such as the jenipapo, are susceptible to desiccation, which may lead to loss of viability and even death, in case its water content is reduced to a critical level. The aim of this work was to evaluate the interference of different packaging conditions in the conservation of the physiological potential of jenipapo seeds stored for 105 days. Specifically, this research sought to analyze the feasibility of the use of vacuum conditions and the coating of the seed with biofilm. The evaluated treatments were: storage in paper bag, plastic bag, plastic with vacuum, plastic with seeds coated with biofilm and plastic with seeds with biofilm and vacuum condition for 15, 45, 75 and 105 days, besides the control. Seeds with biofilm were treated with cassava starch at 3% of the mass to volume ratio. The following tests were performed: water content, germination, germination speed, aerial part and root lengths, wet and dry mass of the aerial part and root. It was concluded that plastic packaging, vacuum condition and biofilm coating are not recommended for storage of jenipapo seeds. Storage in paper bags, when at 24 ºC and with 65% relative humidity for 46 days, is capable of conserving the seeds of jenipapo with germination of 60%.

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Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 87%

Physiological potential of jenipapo seeds stored in different packages

Arruda¹,

Vazquez²,

Júnior³

et al. 2018

Biosci. J.

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“…Desiccation-sensitive seeds do not form a seed bank; hence, they germinate or are predated, but they can be buried by zoochory (e.g., Jansen et al 2002;Tuck Haugaasen et al 2012). The effect of transitory burial on germination of these seeds has been little explored (e.g., Andresen and Levey 2004;Salla et al 2016). Thus, the effect of burial of desiccation-sensitive seeds should be evaluated considering sites with environmental differences inside the tropical rain forest, e.g., beneath canopy and forest gap (Vázquez-Yanes and Orozco-Segovia 1994).…”

Section: Introductionmentioning

confidence: 99%

Effects of seed priming on germination and seedling growth of desiccation-sensitive seeds from Mexican tropical rainforest

et al. 2020

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Seed priming increases the vigor of seeds and seedlings through metabolic and biochemical processes occurring during controlled hydration, followed by dehydration. In the field, seeds are exposed to hydration-dehydration events in and on the soil after dispersal, as in seed priming. Nevertheless, seed priming has been sparsely tested on desiccation-sensitive seeds, which are vulnerable to climate change effects. We evaluated the effect of two priming methods on seeds from two tropical rainforest species: Cupania glabra and Cymbopetalum baillonii. For hydropriming, the seeds were fully hydrated and then dehydrated to three dehydration levels. For natural priming, the seeds were buried for 12 days in either closed forest or forest gap. Primed seeds were sown in 1% agar medium and placed in an environmental chamber. The growth of the seedlings from the highest germination priming treatments was evaluated for 1 year in the field. Our results showed that for C. glabra and C. baillonii, hydroprimed seeds varied in their germination response, depending on the degree of their dehydration. However, for C. baillonii, hydropriming seems to invigorate seeds, compared to non-imbibed seeds of the same dehydration level. Natural priming increased germination speed in both species without any difference between closed forest and forest gap. Moreover, seeds with natural priming had a higher final germination percentage than seeds with hydropriming. Seedlings from seeds with natural priming showed a higher growth rate than the controls in both species, whereas hydropriming produced a similar effect in C. glabra. Both priming methods could be used for restoration practices with the studied species, natural priming being a novel method. The ecological implications of priming in desiccation sensitive seeds are discussed in this study.

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“…Amazonian and Cerrado G. americana had inherently higher germination percentages than G. ulmifolia in well-aerated moist substrate. Seeds of G. americana are known to be non-dormant, photoblastic neutral ( De Souza et al 1999 ) with high percentage germination and fast germination rates ( Andrade et al 2000 ; Queiroz et al 2012 ; Salla et al 2016 ) ensuring rapid seedling establishment if the seed is dispersed to favourable microsites. G. americana seeds of both origins also germinated and developed successfully into seedlings under water.…”

Section: Discussionmentioning

confidence: 99%

Flood tolerance in two tree species that inhabit both the Amazonian floodplain and the dry Cerrado savanna of Brazil

et al. 2018

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Comparing plants of the same species thriving in flooded and non-flooded ecosystems helps to clarify the interplay between natural selection, phenotypic plasticity and stress adaptation. We focussed on responses of seeds and seedlings of Genipa americana and Guazuma ulmifolia to substrate waterlogging or total submergence. Both species are commonly found in floodplain forests of Central Amazonia and in seasonally dry savannas of Central Brazil (Cerrado). Although seeds of Amazonian and Cerrado G. americana were similar in size, the germination percentage of Cerrado seeds was decreased by submergence (3 cm water) and increased in Amazonian seeds. The seeds of Amazonian G. ulmifolia were heavier than Cerrado seeds, but germination of both types was unaffected by submergence. Three-month-old Amazonian and Cerrado seedlings of both species survived 30 days of waterlogging or submersion despite suffering significant inhibition in biomass especially if submerged. Shoot elongation was also arrested. Submersion triggered chlorosis and leaf abscission in Amazonian and Cerrado G. ulmifolia while waterlogging did so only in Cerrado seedlings. During 30 days of re-exposure to non-flooded conditions, G. ulmifolia plants that lost their leaves produced a replacement flush. However, they attained only half the plant dry mass of non-flooded plants. Both submerged and waterlogged G. americana retained their leaves. Consequently, plant dry mass after 30 days recovery was less depressed by these stresses than in G. ulmifolia. Small amounts of cortical aerenchyma were found in roots 2 cm from the tip of well-drained plants. The amount was increased by flooding. Waterlogging but not submergence promoted hypertrophy of lenticels at the stem base of both species and adventitious rooting in G. ulmifolia. Despite some loss of performance in dryland plants, flood tolerance traits were present in wetland and dryland populations of both species. They are part of an overall stress-response potential that permits flexible acclimation to locally flooded conditions.

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Análise Ecofisiológica De Genipa Americana L. Em Banco De Sementes Induzido

Cited by 5 publications

References 12 publications

Physiological potential of jenipapo seeds stored in different packages

Physiological potential of jenipapo seeds stored in different packages

Effects of seed priming on germination and seedling growth of desiccation-sensitive seeds from Mexican tropical rainforest

Flood tolerance in two tree species that inhabit both the Amazonian floodplain and the dry Cerrado savanna of Brazil

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