Validação do aplicativo computacional SEEDSOLVE para previsão das perdas de germinação e vigor de sementes armazenadas

Sinicio, R.; Bhering, Maria Carmem; Vidigal, Déborah de Souza; Dias, Denise Cunha Fernandes dos Santos

doi:10.1590/s0101-31222009000200001

Cited by 7 publications

(8 citation statements)

References 7 publications

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“…Similar results have also been found by Contreiras Rodrigues et al (2011), but with osmoconditioned parsley seeds, who found that the maximum storage time was 90 days, being that degradation began already at the first month of storage. According Sinicio et al (2009), in the post-harvest stage, storage is one of the steps that most interferes with the quality of the seeds, as there are numerous factors involved.…”

Section: Resultsmentioning

confidence: 99%

Effect of drying, pelliculation and storage on the physiological quality of eggplant seeds

Zamariola¹,

Oliveira²,

Gomes³

et al. 2014

J. Seed Sci.

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-The use of methods and technologies such as drying and film coating can bring significant contributions to the farmer. This experiment was conducted in order to evaluate the effect of drying and film coating on the physiological quality of eggplant seeds during storage. Hybrid seeds UGA MS1 produced by the company Hortiagro -Ijaci, MG were used. Seeds were subjected to two types of drying: slow (room temperature) and quick (oven with forced air circulation at 35 o C). The chemical treatment was performed with the Captan product at a dose of 250 grams per 100 kilograms of seed and for the recoating were used three doses of polymer: (0, 3 and 6 mL.kg -1 of seeds). The physiological quality of seeds was evaluated every three months until reaching the period of nine months using germination test, seedling emergence test and seedling establishment. There is a reduction of physiological seed quality during the storage. The slow drying of eggplant seeds results in better quality seeds. The use of polymer reduces the germination percentage, germination speed index and the percentage of seedling emergence.

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Section: Resultsmentioning

confidence: 99%

Effect of drying, pelliculation and storage on the physiological quality of eggplant seeds

Zamariola¹,

Oliveira²,

Gomes³

et al. 2014

J. Seed Sci.

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“…The prediction of viability loss of stored seeds is important both for the maintenance of germplasm and for the management of seed storage (Sinício et al 2009). Since the half past century studies have been developed in order to predict the viability loss, with survival curves and relationships between temperature, humidity and some measure of viability (Pritchard & Dickie 2003).…”

Section: Introductionmentioning

confidence: 99%

Deterioration rates of brazilwood seeds (Caesalpinia echinata Lam.) under high temperatures

Santos

Barbedo

2017

Hoehnea

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-(Deterioration rates of brazilwood seeds (Caesalpinia echinata Lam.) under high temperatures). Caesalpinia echinata seeds deteriorate in less than three months at ambient temperature, although they can remain viable for up to five years when kept under freezing temperatures. We studied the deterioration of brazilwood seeds when submitted to different conditions of temperature and humidity aiming to check the applicability of mathematical models for predicting loss of viability of those seeds. The results showed that the high temperatures preconized for the rapid deterioration and simulation of storability produced an irregular behavior, suggesting that the deteriorative metabolism of these seeds may not correspond to the metabolism during the natural storage. Applying the equations, seeds with 8% water content stored at 7 °C could be stored for five years, while the literature shows that these seeds would not tolerate more than a year. On the other hand, the prediction of storage with 10% of water content at -18 °C would be, by these equations, 128 years, while the literature shows that seeds under these conditions would lose viability in less than ten years. The results showed that the current models might present restrictions on their application, depending on the species and conditions. Keywords: predictability equation, seed conservation, viability RESUMO -(Taxas de deterioração de sementes de pau-brasil (Caesalpinia echinata Lam.) sob elevadas temperaturas). As sementes de Caesalpinia echinata deterioram-se em menos de três meses em temperatura ambiente, embora possam permanecer viáveis por até cinco anos quando mantidas sob congelamento. Estudou-se a deterioração das sementes de pau-brasil quando submetidas a diferentes condições de temperatura e umidade visando a verificar a aplicabilidade de modelos matemáticos para prever a perda de viabilidade dessas sementes. Os resultados mostraram que as altas temperaturas preconizadas para a rápida deterioração e a simulação de armazenagem produziram um comportamento irregular, sugerindo que o metabolismo deteriorativo dessas sementes pode não corresponder ao metabolismo durante o armazenamento natural. Aplicando-se as equações, as sementes com 8% de teor de água armazenadas a 7 °C poderiam ser armazenadas por cinco anos, enquanto a literatura mostra que essas sementes não tolerariam mais de um ano. Por outro lado, a previsão de armazenamento de sementes de pau-brasil com 10% de teor de água a -18°C seria, por essas equações, de 128 anos, enquanto a literatura mostra que as sementes nessas condições perderiam viabilidade em menos de dez anos. Os resultados mostraram que os modelos atuais podem apresentar restrições à sua aplicação, dependendo das espécies e condições. Palavras-chave: conservação de sementes, equação de previsibilidade, viabilidade 1. Parte da Dissertação de Mestrado do primeiro Autor 2.

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“…O processo de produção de sementes exige tecnologias desde a escolha da cultivar até a comercialização, que abrangem seleção da área, uso de variedades recomendadas, semeadura em épocas estabelecidas, acompanhamento do desenvolvimento vegetativo, práticas culturais, tratamentos fitossanitários, determinação do momento ideal de colheita e limpeza adequada dos equipamentos de transporte e beneficiamento (Marcondes et al, 2005;Sinício et al, 2009).…”

Section: Introductionunclassified

Qualidade de sementes de soja convencional e Roundup Ready (RR), produzida para consumo próprio e comercial

Melo

Brandão

Nóbrega³

et al. 2016

Rev. Ciênc. Agr.

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A garantia de sementes com elevado vigor e boa qualidade é fundamental para o sucesso de qualquer cultura. Sementes com baixo vigor podem apresentar dificuldades na germinação e emergência em campo, sob condições não favoráveis, como a falta de umidade ou baixas temperaturas. Portanto, os produtores, na tentativa de reduzir custos de produção, têm separado grãos da safra produzida para serem utilizados como sementes e isso tem sido cada vez mais frequente. Assim, este trabalho teve como objetivo avaliar o potencial fisiológico de sementes de soja Roundup Ready com sementes convencionais, e comparar sementes "salvas", produzidas por um produtor com sementes comerciais. As sementes foram caracterizadas em laboratório (pureza, massa de mil sementes e teor de água), submetidas a testes de vigor (envelhecimento acelerado, teste de frio e condutividade elétrica), teste de germinação, emergência em areia, índice de velocidade de emergência, crescimento de plântulas, comprimento de raízes e parte aérea das plântulas e matéria fresca e seca. Foi possível identificar maior pureza nas sementes comerciais do que nas sementes "salvas". Os lotes das cultivares convencionais apresentaram potencial fisiológico superior às cultivares de soja Roundup Ready, porém, entre as sementes "salvas" e comerciais não houve diferença quanto ao vigor.Palavras-chave: germinação, pureza, sistema de produção, teste de vigor. A B S T R A C TThe guarantee of seeds with high vigor and good quality is the most important characteristic for the success in soybean cropping. Seeds with low vigor may show some difficulty on germination and field emergence, mainly under adverse conditions, such as moisture deficiency or low temperatures. Thus, this study aimed at evaluating the physiological potential of Roundup Ready (RR) and conventional soybean seeds, 'saved' by a farmer as well as commercial seeds. Nevertheless, some farmers, in an attempt to reduce production costs, have already separated cropped grains produced to be used as seeds and it has been increasingly common. So, this trial aimed at evaluating the physiological potential of Roundup Ready soybean seeds with conventional seeds, and compare the 'saved' seeds, produced by a farmer with commercial seeds. The seeds were characterized in the laboratory (purity, mass of thousand seeds and moisture content). Vigor (accelerated aging, cold test and electrical conductivity test), germination test, emergence on sand, emergence speed index, seedling growth, roots and shoots length of seedlings as well as fresh and dry matter were determined. It was possible to identify that the commercial seeds showed higher purity when compared to the saved ones. Plots of conventional cultivars showed higher physiological potential, and there was no difference concerning the vigor between the 'saved' seeds and commercial ones.

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Validação do aplicativo computacional SEEDSOLVE para previsão das perdas de germinação e vigor de sementes armazenadas

Cited by 7 publications

References 7 publications

Effect of drying, pelliculation and storage on the physiological quality of eggplant seeds

Effect of drying, pelliculation and storage on the physiological quality of eggplant seeds

Deterioration rates of brazilwood seeds (Caesalpinia echinata Lam.) under high temperatures

Qualidade de sementes de soja convencional e Roundup Ready (RR), produzida para consumo próprio e comercial

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