Análise de sementes de Lupinus albescens Hook. &amp; Arn

Paim, Luciana Pinto; Avrella, Eduarda Demari; Luchesse, Júlio; Freitas, Elisete Maria de; Lazarotto, Marília; Fior, Claudimar Sidnei

doi:10.21826/2446-82312019v74e2019010

Cited by 2 publications

(6 citation statements)

References 27 publications

(37 reference statements)

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“…Similar to the species Lupinus albescens Hook. & Arn., also native to the region of Rio Grande do Sul State (Paim et al, 2019), Lupinus bracteolaris can also be found in its natural habitat under different phenological phases; that is, some plants with the presence of flowers or fruits and/or seeds in the same period, which according to Cremonez et al (2013), results in the formation of irregular populations. There is little information available in the literature about this species, especially on its propagation and regarding seed germination.…”

Section: Metodologiamentioning

confidence: 99%

“…The pre-germinative treatment by the method of mechanical scarification between sandpaper No. 120 followed the methodology recommended for Lupinus albescens native species in the work of Paim et al (2019).…”

Section: Pre-germinative Treatmentsmentioning

confidence: 99%

“…In other species from the same family, the method of mechanical scarification with sandpaper also showed superior results in the seed germination processes, as well as a high rate of germination speed, as for Schizolobium parahyba (Vell.) Blake (Pereira et al, 2011) and Lupinus albescens (Paim et al, 2019). This is mainly due to the fact that mechanical scarification causes cracks in the tegument of the seeds, therefore increasing the permeability to water and gases, promoting the beginning of imbibition processes and, consequently, germination Nakagawa, 2012, Guedes et al, 2013).…”

Section: Pre-germinative Treatmentsmentioning

confidence: 99%

“…In addition, it is an important technique in the germination of other native species, such as Macroptilium martii Benth. (Araújo et al, 2014a) and Lupinus albescens (Paim et al, 2019), Fabaceae species that inhabit extreme areas of low water availability and poor soils in the Caatinga and Pampa biomes, respectively.…”

Section: Marília Lazarotto André Pich Brunesmentioning

confidence: 99%

“…The comparison between the results of the seed treatments, with the locals of occurrence of the species Lupinus bracteolaris and Lupinus albescens (Paim et al, 2019), that is, sandy soils of arenitic origin, shows that the results found, under the ecophysiological aspect, corroborate the work of Rovedder et al (2010), in which the authors mention that the propagules dispersed in these environments are susceptible to the action of wind and water erosive processes, which contributes to the rupture in the seed tegument, simulating a mechanical scarification resulting from the sand abrasion effects.…”

Section: Marília Lazarotto André Pich Brunesmentioning

confidence: 99%

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Response of Lupinus bracteolaris seeds to pre-germinative treatments and experimental conditions

Paim

Avrella

Horlle

et al. 2021

rev.investig.agrar.ambient.

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Contextualization: Lupinus bracteolaris is a heliophite species that vegetates low lands, open slopes and sandstone hills. Knowledge gap: Despite the high rusticity and potential for covering poor soils, there is still no information to assist in the analysis of its seeds. Purpose: To determine pre-germinative treatments, substrate, temperature, luminosity and water intake in the vigor of Lupinus bracteolaris seeds. Methodology: Fruits were collected from 20 matrix plants, then the seeds were processed and submitted to the following tests: pre-germinative methods (six treatments at 25°C); substrates and temperatures (sand and paper at 20, 25 and 30°C); photoblast test (white light, diffuse-green light and continuous dark under 20°C) and the imbibition curve (control and scarification between sandpaper under 20°C). Evaluations: percentage of germination and formed seedlings, germination speed index, average germination time and seedling formation, using a completely randomized design. Results and conclusions: According to the analyzed variables, the results showed superiority for the pre-germinative treatment between sandpapers for 20 seconds. In addition, the substrate paper germibox and the temperature of 20°C were the most suitable during seed germination. The seeds of Lupinus bracteolaris were classified as neutral-photoblastic and without dormancy.

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Section: Metodologiamentioning

confidence: 99%

Section: Pre-germinative Treatmentsmentioning

confidence: 99%

Section: Pre-germinative Treatmentsmentioning

confidence: 99%

Section: Marília Lazarotto André Pich Brunesmentioning

confidence: 99%

Section: Marília Lazarotto André Pich Brunesmentioning

confidence: 99%

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Response of Lupinus bracteolaris seeds to pre-germinative treatments and experimental conditions

Paim

Avrella

Horlle

et al. 2021

rev.investig.agrar.ambient.

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Suitability of tetrazolium test for Tamarindus indica L. seeds

Cordeiro

Bruno

Lima

et al. 2022

Semina: Ciênc. Agrár.

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Seed quality is routinely assessed by direct tests, e.g, the germination test, or indirect tests like the tetrazolium test, which has shoown to be promising in the determine viability and vigor, allowing the diagnosis of the main problems that may affect seed quality, such as mechanic damages, field deterioration and storage. In this respect, this study was conducted to develop a tetrazolium test protocol to evaluate the viability and vigor of Tamarindus indica L. seeds. Before exposing the seeds to the tetrazolium solution, seed preconditioning studies were carried out in which seven soaking times were tested. The soaking time that did not cause damage to the seed embryo and allowed the removal of the seed coat to expose the seed structures to the tetrazolium salt was selected. Then, an experiment was set up in a completely randomized design with a 2x3x3 factorial arrangement involving two seed lots, three soaking times in tetrazolium salt (6, 12 and 16 h) and three salt concentrations (0.075, 0.1 and 0.5%), totaling 18 treatments with four replicates of 25 seeds, evaluated at 40 ºC. For each treatment, the seeds were divided into three classes, namely, viable and vigorous embryos (class 1); viable embryos (class 2) and non-viable or dead embryos (class 3). For a comparison with the tetrazolium test results, the two seed lots were analyzed for water content, germination, emergence, first count, germination speed index, emergence speed index, growth and seedling dry weight. The viability and vigor of T. indica seeds can be evaluated after a soaking period of 48 h and immersion for 6h in tetrazolium salt at the concentration of 0.1%, at 40°C, with provides results similar to conventional seed viability tests. The tetrazolium test proved to be adequate to differentiate T. indica seed lots in terms of viability.

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Análise de sementes de Lupinus albescens Hook. & Arn

Cited by 2 publications

References 27 publications

Response of Lupinus bracteolaris seeds to pre-germinative treatments and experimental conditions

Response of Lupinus bracteolaris seeds to pre-germinative treatments and experimental conditions

Suitability of tetrazolium test for Tamarindus indica L. seeds

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