Avaliação da qualidade de sementes de palmeira jerivá pelo teste de Raios X

Sturião, Walas Permanhane; Landgraf, Paulo Roberto Corrêa; Rosa, Thiago Paschoal

doi:10.5433/1679-0359.2012v33n1p213

Cited by 6 publications

(4 citation statements)

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“…The percentage of full seeds of the three groups varied between 65 and 80.5% (Table 1). These values were higher than the ones found by Sturião et al (2012), when they evaluated the internal morphology of seeds of Syagrus romanzoffiana through the xray tests; these authors found around 60.5% of viable seeds (full). According to MAPA (2009), fruit-seeds or seeds classified as full or totally formed by the xray tests contain all the essential tissues for the germination and, because of this, they are considered viable.…”

Section: Resultscontrasting

confidence: 61%

X-ray test to evaluate the physiological potencial of Platypodium elegans Vog. Seeds (Fabaceae)

Gomes¹,

Matos²,

Martins³

et al. 2016

Sc.Agropec

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The objective of this work was to evaluate the internal morphology of Platypodium elegans Vog. seeds through the X-ray tests and to verify their relation with germination. 200 radiographic images were taken of each group and the tests were taken with the seeds set at 28.0 cm from the source of x-rays. Next, the seeds were classified according to their internal morphology as seen in the radiographic images. Three categories of seeds were established: full, empty and partially full. For each seed category, germination tests were performed. Statistical design in factorial 3x3, with three groups and three categories. From the results obtained in this work, the use of x-ray test with Platypodium elegans Vog. seeds is promising in quality of seed groups detection, assisting in empty and partially full seeds separation, invalidating their immediate use or storage. The x-ray test, in 26 kV for 1.2 seconds intensity was efficient in Platypodium elegans Vog. internal morpholy evaluation. There is a relationship between the internal morphology of seeds and the results of the germination test. The importance of a methodology of easy implementation, aiming at estimating the germinative power of the groups of seeds, was proved by the x-ray tests in seeds of Platypodium elegans Vog. and can also be used for the analysis of the internal morphology of other forest species.

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Section: Resultscontrasting

confidence: 61%

X-ray test to evaluate the physiological potencial of Platypodium elegans Vog. Seeds (Fabaceae)

Gomes¹,

Matos²,

Martins³

et al. 2016

Sc.Agropec

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“…Seed germination percentages decrease to very low levels after storage under laboratory conditions, most likely due to loss of embryo vigor and deterioration caused by crystallization of lipids of the seed endosperm (Balesevic-Tubic et al 2010;Goudel et al 2013;Oliveira et al 2015). T h e r e f o r e , p r e s e r v a t i o n a n d c o n s e r v a t i o n o f S. romanzoffiana via orthodox seed storage methods is not feasible (Sturião et al 2012;Goudel et al 2013;Oliveira et al 2015).…”

Section: Introductionmentioning

confidence: 99%

In vitro germination of zygotic embryos excised from cryopreserved endocarps of queen palm (Syagrus romanzoffiana (Cham.) Glassman)

Santos

Salomão

2017

In Vitro Cell.Dev.Biol.-Plant

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Queen palm (Syagrus romanzoffiana [Cham.] Glassman) is a palm species best known as an ornamental tree for urban landscaping, but recently, it has been evaluated as a potential crop for biofuel production. The objective of the present work was to establish a cryopreservation technique for queen palm to ensure long-term conservation of this species. The cryopreservation protocol consisted of direct immersion in liquid nitrogen (LN) of whole endocarps with water contents ranging from 5.5 to 10.9%, followed by slow thawing at room temperature (25 ± 2°C) excision and in vitro culture of zygotic embryos. Viability of zygotic embryos isolated from endocarps with different water contents was evaluated before (control) and after freezing in LN using in vitro culture on Woody Plant Medium (WPM) medium. Germination percentages of zygotic embryos isolated from endocarps stored in LN varied from 84 to 93%, whereas those isolated from controls ranged from 55 to 71%. Germination rates were significantly higher for zygotic embryos excised from cryopreserved endocarps. The water content of control or frozen endocarps did not have a significant effect on germination percentages of zygotic embryos. Zygotic embryos excised from endocarps following cryopreservation in liquid nitrogen developed into normal plantlets after in vitro culture. The technique tested is simple, efficient, and can be used in plant gene banks as a routine approach for long-term conservation of queen palm germplasm.

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“…The radiographic imaging analysis technique has been used with success in several native forest species, including the seeds of Eugenia pleurantha (Masetto et al, 2007), Cecropia pachystachya Trec. (Pupim, Novembre, Carvalho, & Cicero, 2008), Cedrela fissilis (Masetto, Faria, & Queiroz, 2008), Tabebuia heptaphylla (Amaral, Martins, Forti, Cicero, & Marcos Filho, 2011), Xylopia aromatica (Socolowski, Cicero, & Vieira, 2011), and Syagrus romanzoffiana (Cham) Glassman (Sturião, Landgraf, & Rosa, 2012), and in the morphological characterization of embryos of Tecoma stans L. JUSS. ex KUNTH (Socolowski & Cicero, 2008), the measurement of internal free areas in seeds of Acca sellowiana (Silva, Sarmento, Silveira, Silva, & Cicero, 2013), and the viewing of the internal morphology of seeds of Terminalia argentea (Gomes et al, 2014 Given the scarcity of information on the internal morphology and the effects of desiccation on achenes of species in the genus Anacardium, the objective of this study was to verify the efficiency of X-ray testing in evaluating the morphology and viability of A. othonianum achenes subjected to desiccation.…”

Section: Introductionmentioning

confidence: 99%

<b>Radiographic image analysis of <i>Anacardium othonianum</i> Rizz (anacardiaceae) achenes subjected to desiccation

et al. 2017

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ABSTRACT. Studies evaluating the internal morphology and seed quality of native species are essential for successful conservation programs. Our aim was to verify the efficiency of X-ray imagery in evaluating cashew-tree-of-the-cerrado (Anacardium othonianum Rizz.) achene viability after desiccation. The achenes were collected at 12% water content (w.b.) and dried in silica gel until they reached 10, 8, 6, and 4% (w.b.). The fruit morphology and the quality of the seeds were evaluated by X-ray test together with vigor, electrical conductivity and emergence tests. Achenes with different water contents were exposed to an Xray machine at 18 kV for 11 s and were thereafter submitted to emergence tests. The images were analyzed, and the achenes were classified based on internal morphology as completely full, malformed, or empty. These results were compared to those from the emergence tests. The statistical design was a complete randomized factorial (5 x 3). Desiccation to 4% (w.b.) did not damage or modify the internal structures. Xray was efficient in evaluating the internal morphology and detecting achene quality, making it possible to remove empty and abnormal fruit and form vigorous seed lots, reducing the cost of storage and bedding plant production for this native species.Keywords: X-Ray, fruit tree, cerrado, desiccation, internal morphology.Análise de imagens radiográficas em aquênios de Anacardium othonianum Rizz (anacardiaceae) submetidos à secagem RESUMO. Estudos referentes à avaliação da morfologia interna e da qualidade de sementes de espécies nativas são de fundamental importância para o sucesso dos programas de conservação. Objetivou-se com este estudo verificar a eficiência do teste com raios X na avaliação da viabilidade de aquênios de caju-deárvore-do-cerrado (Anacardium othonianum Rizz.) submetidos à secagem. Para tal, aquênios de A. othonianum Rizz foram coletados com 12% (b.u.) e submetidos à secagem em sílica gel até a obtenção dos teores de água de 10, 8, 6 e 4% (b.u.). Os frutos foram avaliados quanto à morfologia interna e qualidade física pelo teste de raios X, e o vigor das sementes pelos testes de germinação, condutividade elétrica e emergência de plântulas. Para a obtenção das imagens radiográficas, aquênios com diferentes teores de água foram expostos à radiação em um aparelho de raios X digital "Faxitron HP", MX-20 à intensidade de 18 kV por 11 segundos, e posteriormente foram submetidos ao teste de emergência. As imagens radiográficas foram analisadas e os aquênios classificados de acordo com a morfologia interna em três categorias: Cheios, mal formados e vazios. O delineamento estatístico utilizado foi o inteiramente casualizado em esquema fatorial (5 x 3). A secagem dos frutos até 4% (b.u.) não danificou ou alterou as estruturas internas dos aquênios. O teste de raios X é eficiente na avaliação da morfologia interna e na detecção da qualidade de aquênios de A. othonianum Rizz, possibilitando a separação de aquênios vazios ou com anormalidades embrionárias e permite a formação de lotes ...

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Avaliação da qualidade de sementes de palmeira jerivá pelo teste de Raios X

Cited by 6 publications

References 1 publication

X-ray test to evaluate the physiological potencial of Platypodium elegans Vog. Seeds (Fabaceae)

X-ray test to evaluate the physiological potencial of Platypodium elegans Vog. Seeds (Fabaceae)

In vitro germination of zygotic embryos excised from cryopreserved endocarps of queen palm (Syagrus romanzoffiana (Cham.) Glassman)

<b>Radiographic image analysis of <i>Anacardium othonianum</i> Rizz (anacardiaceae) achenes subjected to desiccation

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