RELATIONSHIP BETWEEN INTERNAL MORPHOLOGY AND PHYSIOLOGICAL QUALITY OF Leucaena leucocephala SEEDS USING IMAGE ANALYSIS

Medeiros, André Dantas de; León, Manuel Jesús Zavala; Araújo, Joyce de Oliveira; Pereira, Márcio Dias; Dias, Denise Cunha Fernandes dos Santos; Silva, Laércio Junio da

doi:10.1590/1806-90882019000200008

Cited by 7 publications

(8 citation statements)

References 23 publications

(33 reference statements)

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“…Recent reports have show the usefulness of radiographic images for embryo abnormality detection, identification of seed coat mechanical damages, determination of seed maturation stage, full seed selection, and general assessment of seed quality (Amaral et al, 2019;Gibbert et al, 2019;Medeiros et al, 2019;. X-ray tests are recommended by the Rules for Seed Testing (Brasil, 2009) and by the International Seed Testing Association (ISTA, 2003) aiming to detect full, empty, damaged, or insect-predated seeds.…”

Section: Discussionmentioning

confidence: 99%

Desiccation Tolerance and germination of Psidium guajava seeds from different regions of Brazil

Fernandes

Tonetti

José

et al. 2022

CERNE

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Background:The germination ecology of P. guajava seeds collected in two regions of Brazil was investigated aiming to (1) characterize the seed batches; (2) determine the best temperature for germination; and (3) assess variations in seed desiccation tolerance (DT). For each batch, we determined seed water content and initial germination. To evaluate temperature effects, we tested seed germination. After, we generated the imbibition curves for the two provenance. To evaluate the loss of DT, the seeds were left to germinate along different time intervals. We monitored water loss by regularly weighing the seeds until achieving stabilization, keeping them under these conditions for 72 hours. After drying, the seeds were pre-hydrated and submitted to the germination test. Results:We identified variations in physiological characteristics between the seeds from north and southeast batches. At the temperature extremes, the seeds from both provenance failed to germinate. The highest germination percentages were observed at 20 and 25 °C (constant) and between 20-30 °C (alternating) for the two batches and, for the southeast batch specifically, at 30 °C. The imbibition curve displayed a triphasic pattern with a rapid increase in seed fresh weight in the first 48 hours. Conclusion:The southeast provenance seeds lost DT abruptly, until its complete loss after radicle protrusion, which occurred in both batches. The highest values of germination speed index (GSI) of both provenance were observed after a 9-day imbibition period, suggesting seed hydration memory. Drying resulted in necrosis of the root tissue and death of the seeds with visible roots.

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Section: Discussionmentioning

confidence: 99%

Desiccation Tolerance and germination of Psidium guajava seeds from different regions of Brazil

Fernandes

Tonetti

José

et al. 2022

CERNE

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“…Analysis of images of seed material, in particular, evaluation of various shape indices for classification of seed species diversity, is widely enough applied in seed science [25][26][27]. Regarding the application of the X-ray method, it should be noted that the works of other researchers are mainly devoted to the visualization and identification of individual, but quite common types of hidden defects, for example-incomplete seed [28], hidden insect infestation [29] and embryo defects [14].…”

Section: Discussionmentioning

confidence: 99%

Assessment of Brassicaceae Seeds Quality by X-ray Analysis

et al. 2021

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A serious problem of vegetable production is the quality of sown seeds. In this regard, assessment of seed quality before sowing and storage is of great practical interest. The modern level of scientific research requires the use of instrumental automated methods of seed quality evaluation, allowing to obtain more information and in a shorter time. The material for the study was a variety of samples from the collection of Brassica oleracea L., var. capitata, Raphanus sativus L., var. radicula, and Lepidium sativum L. seeds from the Federal Scientific Center of Vegetable Breeding and the Timofeev Selection Station. Digital X-ray images of seeds were obtained using a mobile X-ray diagnostic device PRDU-02. Automatic analysis of digital X-ray images was performed in the software “VideoTesT-Morphology 5.2.” The following latent defects of cabbage seeds of economic importance were revealed and identified: irregular darkening, significant “patterning” with deep separation of embryo parts, “angularity of seeds” leading to the loss of their viability. Automatic analysis of digital X-ray images of seeds confirmed the informativeness of brightness indices of digital X-ray images, as well as shape indices. Their connection with sowing qualities of the studied seeds was established.

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“…New approaches have been employed in X-ray testing for seed-quality assessment to automate seed radiography analysis. Semiautomated analysis of digital radiographs can relate seed internal morphology and tissue integrity which can provide potential parameters associated with physiological seed quality [10,11]. Such parameters can be measured by specific image-analysis software, making the interpretation of results faster and less subjective, and defining standardized evaluation criteria, which can be more accurate than evaluations based on human vision alone.…”

Section: Introductionmentioning

confidence: 99%

Selection of Superior Senna macranthera Seeds, Carbon Stock, and Seedling Survival, and Costs for Habitat Restoration

et al. 2023

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Conservation and recovery of degraded areas generate great demand for seeds of native tree species. The development and/or improvement of efficient techniques for the evaluation of forest-seed quality is important for the production and establishment of high-quality seedlings for restoration. In this study, the tissue density of radiographic images of Senna macranthera seeds was related to their physiological quality. Moreover, biomass, carbon stock, seedling survival, and X-ray technique costs were estimated for S. macranthera. Collected seeds were analyzed using digital radiography to measure relative and integrated density. The physical integrity of seed tissues was visually evaluated. Seeds were then germination tested to assess seedling development-related traits. Semiautomated radiography allowed for visualizing internal seed structures and observing their density and physical-integrity differences as well as physiological quality. Moreover, seed lots with lower relative and integrated densities had more physical damage and/or malformation, thus producing less vigorous seedlings. The average carbon stock was 21.42 kg per tree. The seed selection cost was USD 0.0132/seed at an 81% germination rate. The annual cost of planting S. macranthera seedlings was USD 7500 per hectare during the establishment year and averaged USD 1562 per year for replanting lost transplants over the eight years after initial planting. Applying these techniques may enhance the seedling production of this species, contributing to reforestation programs in Brazil.

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RELATIONSHIP BETWEEN INTERNAL MORPHOLOGY AND PHYSIOLOGICAL QUALITY OF Leucaena leucocephala SEEDS USING IMAGE ANALYSIS

Cited by 7 publications

References 23 publications

Desiccation Tolerance and germination of Psidium guajava seeds from different regions of Brazil

Desiccation Tolerance and germination of Psidium guajava seeds from different regions of Brazil

Assessment of Brassicaceae Seeds Quality by X-ray Analysis

Selection of Superior Senna macranthera Seeds, Carbon Stock, and Seedling Survival, and Costs for Habitat Restoration

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