Germination and vigor of stored Jatropha (Jatropha curcars L.) seeds

José, Solange Carvalho Barrios Roveri; Salomão, Antonieta Nassif; Melo, Luis Alberto Martins Palhares de; Santos, I. R. I.; Laviola, Bruno Galvêas

doi:10.1590/2317-1545v40n1183431

Cited by 4 publications

(5 citation statements)

References 15 publications

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“…This phenomenon suggests that the fat is gradually transformed into some organic small molecular substances under the stratification, thereby serving as an energy source and functional foundation for seed dormancy release. Similar studies have previously been carried out on Cornus florida [15] and Jatropha curcars [44].…”

Section: Study On Main Stored Substances Changes Of S Paniculata Seed...supporting

confidence: 78%

Methodological and Physiological Study during Seed Dormancy Release of Symplocos paniculata

Zhang,

Tang,

et al. 2024

Plants

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Symplocos paniculata are reported to exhibit seed dormancy, which impedes its cultivation and widespread adoption. In this study, a comprehensive method was established to overcome seed dormancy by subjecting seeds to scarification in 98% H2SO4 for 10 min, followed by 1000 mg·L−1 GA3 soaking for 48 h and stratification at 4 °C for 100 days. The seed germination percentage has increased significantly, to a peak of 42.67%, though the seeds could not germinate timely by NaOH scarification. Additionally, the dynamic changes of key stored substances (proteins, soluble sugars, starches, and fats), associated enzyme activities (amylases, peroxidase, and catalase), and endogenous hormones (abscisic acid, gibberellic acid, and indole-3-acetic acid) in seeds were investigated. The results demonstrated a continuous degradation of starch and fat in S. paniculata seeds, while the levels of protein and soluble sugar exhibited fluctuations, which probably facilitated seed dormancy breaking through energy supply and transformation. The enzymatic activities underwent rapid changes, accompanied by a gradual decrease in ABA content within the seeds with increasing stratification time. Notably, GA3, GA3/ABA, and (GA3 + IAA)/ABA showed significant increases, indicating their positive regulatory roles in seed germination. This study clarified the dormancy mechanism and established an effective method for the release dormancy of S. paniculata seeds.

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Section: Study On Main Stored Substances Changes Of S Paniculata Seed...supporting

confidence: 78%

Methodological and Physiological Study during Seed Dormancy Release of Symplocos paniculata

Zhang,

Tang,

et al. 2024

Plants

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“…It is important to note that the relative water content of non-conventional oilseeds can vary depending on the specific seed. For example, the RWC of J. curcas ranged from 3.3 to 7.7% [26], Camelina sativa ranged from 4-6% [27], and 8-10% for M. oleifera [28]. During the initial stages of seed imbibition, the movement of water is mainly governed by the matric component, which involves the physical properties of the seed [29].…”

Section: Discussionmentioning

confidence: 99%

Non-Conventional Oilseeds: Unlocking the Global Potential for Sustainable Biofuel Production

Alhammad,

Jamal,

Carlucci

et al. 2023

Catalysts

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Renewable energy sources have become an urgent worldwide concern due to the impacts of global warming. Globally, biofuels can significantly reduce greenhouse gas emissions, which are major contributors to global warming. The use of biofuels has the potential to transform the energy landscape while mitigating the adverse effects of traditional fossil fuels. This study examines the water features, biochemical compositions, and fatty acid profiles among various plant species. The results reveal significant variations in water features as a consequence of the relative water content and water potential of each seed. Also, we note that some non-edible species like A. blanchetii, C. procera, E. oleracea, P. juliflora, M. oleifera, and J. curcas have good attributes that confer a biofuel-like species. These attributes are high in oil content and have a good profile content of long-chain polyunsaturated fatty acids (LC-PUFAs), ranging from 35% to 80% among the different oilseeds. Fatty acid profiling reveals distinct compositions among the plant species. Stearic acid (C18:0), oleic acid (C18:1), and linoleic acid (C18:2) were the principal oils in A. blanchetii, J. curcas, P. juliflora, M. oleifera, and S. tuberosa compared to other species. M. oleifera stands out with a high linoleic acid (C18:1) content, while C. maxima, J. curcas, and P. juliflora are even higher (C18:2). A principal component analysis (PCA) and Pearson correlations analysis also confirmed that alternative oilseeds exhibited similarities to standard oilseeds and have the potential to replace them for biofuel production. These findings demonstrate the potential of non-conventional oilseeds for sustainable biofuel production. By unlocking their global potential, we can advance towards mitigating environmental impacts and fostering a sustainable biofuel industry.

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“…A determinação da viabilidade de sementes florestais pelo teste de tetrazólio é confiável, de fácil interpretação e permite obter resultados rápidos (MASULLO et al, 2017), caso contrário, atestar a viabilidade de sementes por meio do processo germinativo pode levar tempo, uma vez que, existem espécies de germinação lenta e desuniforme como é o caso da B. excelsa (MÜLLER et al, 1980), o que possivelmente tornaria inviável economicamente testar sua viabilidade através da germinação.…”

Section: Tratamentosunclassified

“…A concentração da solução de tetrazólio a 0,5% foi eficiente em destacar os tecidos, independentemente da forma de embebição. Estudos de viabilidade de sementes da B. excelsa pelo teste de tetrazólio também identificaram a concentração de 0,5% como adequada para coloração dos tecidos vivos e classificação da viabilidade dessas sementes (REIS et al, 1979;CAMARGO et al, 1997), bem como para Ceiba speciosa (LAZAROTTO et al, 2011), Platymiscium floribundum e Acacia polyphylla (MASULLO et al, 2017).…”

Section: Tratamentosunclassified

“…Diversos estudos com espécies agrícolas e hortícolas permitiram adequar procedimentos padrão de viabilidade de sementes pelo teste de tetrazólio (FRANÇA-NETO et al, 1998;SILVA et al, 2013;REZENDE et al, 2015;RODRIGUES et al, 2018;PARAÍSO et al, 2019) e entre outros. Na área florestal, apesar dos trabalhos desenvolvidos com espécies nativas Copaifera langsdorffii e Schizolobium parahyba (FOGAÇA et al, 2011) Ceiba speciosa (LAZAROTTO et al, 2011), Enterolobium contortisiliquum (NOGUEIRA et al, 2014), Tabebuia roseoalba (ABBADE; TAKAKI, 2014), Jatropha curcas (SILVA et al, 2017), Platymiscium floribundum, Lonchocarpus muehlbergianus e Acacia polyphylla (MASULLO et al, 2017), Libidibia ferrea (CARVALHO et al, 2017) e entre outros, ainda carece de procedimentos adequados para sementes de outras espécies, sobretudo, as recalcitrantes e de germinação lenta.…”

Section: Introductionunclassified

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Viabilidade De Sementes De Castanha-Do-Brasil Pelo Teste De Tetrazólio

Borella

Silva

Souza

et al. 2020

NAT

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Objetivou-se revisar e propor o protocolo de viabilidade das sementes da Bertholletia excelsa pelo teste de tetrazólio. Sementes oriundas de plantio comercial propagado por enxertia com 16 anos de idade implantadas na Fazenda Iracema em Cláudia, MT, foram destegumentadas e cortadas longitudinalmente, depois foram hidratadas em água por imersão direta (ID) e papel toalha Germitest® (PG) por 24 e 48 h e embebidas nas concentrações de 0,1 e 0,5% do sal de tetrazólio por 12 e 24 h no escuro à 30 °C. O delineamento experimental foi completamente randomizado em fatorial 2 x 2 x 2 x 2 (forma de embebição x tempo em embebição x tempo em solução de tetrazólio x concentração da solução de tetrazólio) com quatro repetições de 8 sementes. O teste de tetrazólio foi eficiente para colorir e identificar as sementes viáveis e inviáveis. A avaliação da viabilidade das sementes da B. excelsa destegumentadas e partidas ao meio foi melhor na condição de embebição com imersão direta em água por 24 h e concentração de 0,5% do sal tetrazólio por 24 h à 30 °C e embebição em papel toalha Germitest® por 24 h e concentração de 0,5% do sal tetrazólio por 12 h à 30 °C.Palavras-chave: Bertholletia excelsa Humb. Bonpl; potencial fisiológico; sementes florestais; recalcitrância. VIABILITY OF BRAZIL NUTS SEEDS BY TETRAZOLIUM TEST ABSTRACT: The objective was to review and propose the protocol of viability of Bertholletia excelsa seeds by tetrazolium test. Seeds from the commercial planting propagated by grafting with 16-year-old implanted at Fazenda Iracema in Cláudia, MT, were undegumented and cut longitudinally, then hydrated in water by direct immersion (ID) and Germitest® paper towel (PG) for 24 and 48 h and soaked in concentrations of 0.1 and 0.5% of tetrazolium salt for 12 and 24 h in the dark at 30 ° C. The experimental design was completely randomized in a factorial design 2 x 2 x 2 x 2 (soaking form x soaking time x time in tetrazolium solution x tetrazolium solution concentration) with four replications of 8 seeds. The tetrazolium test was efficient to color and identify viable and unviable seeds. The evaluation of viability of detegumented and cut longitudinally B. excelsa seeds was better in: direct soaking in water for 24 h and concentration of 0.5% of tetrazolium salt for 24 h at 30 ° C and soaking in Germitest® paper towels for 24 h and a concentration of 0.5% of the tetrazolium salt for 12 h at 30 ° C.Keywords: Bertholletia excelsa Humb. Bonpl; physiological potential; forest seeds; recalcitrance.

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Germination and vigor of stored Jatropha (Jatropha curcars L.) seeds

Cited by 4 publications

References 15 publications

Methodological and Physiological Study during Seed Dormancy Release of Symplocos paniculata

Methodological and Physiological Study during Seed Dormancy Release of Symplocos paniculata

Non-Conventional Oilseeds: Unlocking the Global Potential for Sustainable Biofuel Production

Viabilidade De Sementes De Castanha-Do-Brasil Pelo Teste De Tetrazólio

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