SENSIBILIDADE À DESSECAÇÃO DE EMBRIÕES DE Inga vera Willd. FORMADOS SOB DIFERENTES CONDIÇÕES AMBIENTAIS1

Lamarca, Edmir Vicente; Barbedo, Claudio José

doi:10.1590/0100-67622015000600011

Cited by 8 publications

(7 citation statements)

References 20 publications

(26 reference statements)

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“…Mas a habilidade de tolerar a dessecação e o armazenamento em baixas temperaturas desenvolvese nas semen tes durante a maturação e depende das condi ções em que as sementes foram formadas, conforme foi demonstrado para I. vera subsp. affinis (Lamarca & Barbedo, 2021) que também atinge a maturidade fisiológica com elevados teores de água e que podem apresentar varia ção na capacidade de dessecação, de acordo com as condições ambientais em em as semen tes se formam (Lamarca & Barbedo, 2015).…”

Section: Discussionunclassified

Maturação de frutos e sementes de sapucaia (Lecythis pisonis Cambess. - Lecythidaceae)

Duarte¹,

Almeida²,

Santos³

et al. 2022

Rev. Biol. Neotrop.

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Estudos de maturação são importantes para definir o momento de colheita, para tanto objetivou-se avaliar a maturação de frutos e sementes de Lecythis pisonis. Estudou-se frutos e sementes 1, 2, 3, 4 e 5 meses de idade, avaliou-se a morfologia e a morfometria, a massa das sementes nos frutos (%), o teor de água (%) e a massa seca (g) e a composição química das reservas nas sementes com 4 e 5 meses. No teste de emergência determinou-se as plântulas emergidas, a protrusão das raízes, a mortalidade e a dormência. Os frutos tornaram-se elítico-ovóides após 2 meses, distinguindo a região mediana em que está presente a calicina e uma constrição que marca o opérculo. As sementes ariladas se formaram em quatro lóculos. As sementes inicialmente hialinas, tornaram-se marrons aos 4 meses e o embrião foi observado após 3 meses, mantendo-se indiferenciado e envolto pelo endosperma, com reservas lipídicas. Sementes com 5 meses apresentaram 60,3% de água, a máxima massa seca (3 g), a máxima emergência (67,0 ± 15,3%) e a menor mortalidade (9%), contudo, exibiram 9% de dormência. A maturidade morfológica de frutos e sementes é alcançada aos 4 meses, mas a maturidade fisiológica das sementes ocorre aos 5 meses.

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Section: Discussionunclassified

Maturação de frutos e sementes de sapucaia (Lecythis pisonis Cambess. - Lecythidaceae)

Duarte¹,

Almeida²,

Santos³

et al. 2022

Rev. Biol. Neotrop.

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“…Over the years, the growth in scientific production has been intensified in several areas of knowledge, such as ecology, biological activities, production and phytochemistry (De Sousa Dias et al, 2010;da Silva et al, 2014;Lamarca & Barbedo, 2015;Avila Jr., Pinheiro, & Sazima, 2015;Machado, de Oliveira, Zério, Parra, & Macedo, 2017). All papers were distributed in 133 scientific journals in several areas of knowledge.…”

Section: Literature Reviewedmentioning

confidence: 99%

Scientific literature on Inga (Fabaceae) from Santa Catarina state, Southern Brazil (1983-2017)

Antunes

Elias

Pezente

et al. 2019

RBT

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Inga Mill. belongs to mimosoid clado (Fabaceae, Caesalpinioideae) with 131 species in Brazil. It is the most expressive genus of Fabaceae. This study aimed to perform a bibliometric analysis on Inga from Santa Catarina state. A survey of the published literature was conducted using the electronic databases of the Web of Science, Scopus and Scielo, with the accepted names of Inga species and its synonyms. Papers were distributed in four subject categories: C1 (Ecological), C2 (morphology, anatomy, histology, physiology and genetics), C3 (production and use) and C4 (biochemical and nutritional properties). We registered 232 papers for 13 species of Inga, exhibiting remarkable growth over time. C1 was the most expressive subject category, mainly by nutrient supply, shading and nitrogen fixing capacity. The subjects diversifying over the years, with registered papers in all categories. Inga edulis, I. vera and I. marginata were the most registered species in our survey. We did not find papers on I. edwallii, I. sellowiana and I. vulpina. Our results showed an increase in the number of articles on Inga over time, especially in the last 13 years. However, some important gaps need to be addressed, such as the relatively small number and/or lack of studies conducted for some species.

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“…The respiratory rates of embryos from Inga vera were evaluated using an Illinois 6600 gas analyzer (Illinois Instruments, Inc., Johnsburg), with embryos incubated in respirometers (0.6 L glass vials, hermetically sealed), in the absence of light, for five days, to determine the percentage by volume of O 2 and CO 2 . This data was used to determine the rates of O 2 consumption and CO 2 release expressed in µmol.gDW -1 .d -1 (Lamarca and Barbedo, 2012). The respiratory quotient (RQ = CO 2 released/O 2 consumed) was calculated according to the equation described by Kader and Saltveit (2002).…”

Section: Introductionmentioning

confidence: 99%

“…After the control sample (no drying) was removed, the embryos were subjected to two levels of intermittent drying in a forced air circulation oven, in simple layers without overlapping. The levels were alternated: ten hours at 30 ± 1 °C and fourteen hours at 22 ± 2 °C (Bonjovani and Barbedo, 2008), until their water contents were close to 53% (level 1) and 46% (level 2), which are reference values for sensitivity analysis to desiccation of embryos of Inga vera (Bonjovani and Barbedo, 2008;Lamarca and Barbedo, 2015).…”

Section: Introductionmentioning

confidence: 99%

Respiratory rates and freezing tolerance of embryos of Inga vera Willd. subsp. affinis (DC.) T.D. Penn. from different regions

Lamarca

Barbedo

2021

J. Seed Sci.

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Recalcitrant seeds are sensitive to desiccation and low storage temperatures, but there is a gradient of recalcitrance between different species and between populations of the same species. Therefore, tolerance to drying and low temperatures, as well as the respiratory rates of seeds, can be conditioned by the source of the material. The present study aimed to evaluate the relationship among desiccation and low temperature tolerance, and respiratory rates of Inga vera embryos from different regions. The embryos were submitted to three drying levels and incubated for up to fifteen days at -4, -2, 2 and 5 °C. Then, they were evaluated for respiration, germination and electrical conductivity. The embryos tolerated freezing at -4 °C since they were associated with certain levels of drying and a consequent change in the energy status of water. In conclusion, the conditions in which the embryos are formed define their degree of maturation at dispersal, hence their tolerance to desiccation and freezing.

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SENSIBILIDADE À DESSECAÇÃO DE EMBRIÕES DE Inga vera Willd. FORMADOS SOB DIFERENTES CONDIÇÕES AMBIENTAIS1

Cited by 8 publications

References 20 publications

Maturação de frutos e sementes de sapucaia (Lecythis pisonis Cambess. - Lecythidaceae)

Maturação de frutos e sementes de sapucaia (Lecythis pisonis Cambess. - Lecythidaceae)

Scientific literature on Inga (Fabaceae) from Santa Catarina state, Southern Brazil (1983-2017)

Respiratory rates and freezing tolerance of embryos of Inga vera Willd. subsp. affinis (DC.) T.D. Penn. from different regions

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