Potencial fisiológico de sementes de couve-flor e desempenho das plantas em campo

Kikuti, Ana Lúcia Pereira; Filho, Júlio Marcos

doi:10.1590/s0101-31222007000100015

Cited by 16 publications

(10 citation statements)

References 9 publications

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“…Estudando o potencial fisiológico de sementes de couveflor e comparando com o desempenho em campo, Kikuti e Marcos Filho (2007) também concluíram que existe influência no desenvolvimento inicial das plantas quando essas apresentam diferenças acentuadas entre os lotes, como foi verificado nesse estudo, onde o lote C se apresentou superior na maioria dos resultados obtidos, bem como o lote B mostrou desempenho inferior entre os lotes analisados.…”

Section: Resultsunclassified

Potencial fisiológico de sementes de mogango e desempenho das plantas no campo

Malone¹,

Villela²,

Mauch³

2008

Rev. bras. sementes

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RESUMO -O objetivo desse estudo foi comparar a eficiência de diferentes testes de vigor na avaliação da qualidade fisiológica em sementes de mogango, relacionando os resultados obtidos em laboratório com o desempenho das plantas no campo. Os lotes foram avaliados pelos testes de germinação, primeira contagem, envelhecimento acelerado tradicional e com uso de solução salina não saturada de NaCl, (ambos a 41ºC/48 e 72h) e comparados com a emergência e o desenvolvimento inicial das plantas no campo. As plantas foram avaliadas aos quinze, vinte cinco e trinta e cinco dias após a semeadura. Foram determinados o comprimento de parte aérea e de raiz, número de folhas e massa seca de planta. O delineamento experimental foi inteiramente casualizado, utilizando-se quatro tratamentos (lotes) com quatro repetições. Conclui-se que o teste de envelhecimento acelerado tradicional por 72h permitiu classificar os lotes em diferentes níveis de vigor, e é o mais adequado para avaliação do potencial fisiológico de sementes de mogango. Diferenças acentuadas quanto de vigor entre lotes de sementes de mogango influenciaram o desempenho inicial da cultura, especialmente o comprimento da parte aérea e a matéria seca da planta.Termos para Indexação: Cucurbita pepo, vigor, estabelecimento de plantas. MOGANGO PHYSIOLOGICAL SEED POTENTIAL AND FIELD PERFORMANCEABSTRACT -The objective of this study was to compare different vigor tests used to evaluate physiological quality in mogango seeds, and the relationship between the results obtained in the laboratory and field performance. The lots were evaluated by the following tests: standard germination, first count of germination, traditional accelerated aging and with non-saturated NaCl solution (both at 41ºC/48 and 72h) and compared with emergence and plant development. The plants were evaluated at fifteen, twenty five and thirty five days after sowing. Plant height, number of leaves and dry weight were estimated. A randomized complete block design was used with four treatments (lots) and four replications. Based on the results it was concluded that traditional 72h accelerated aging provided a better differentiation among mogango seed lots with different physiological quality. Variations in mogango seed lots can affect the initial plant performance, especially plant height and dry weight.

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Section: Resultsunclassified

Potencial fisiológico de sementes de mogango e desempenho das plantas no campo

Malone¹,

Villela²,

Mauch³

2008

Rev. bras. sementes

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“…Seeking to minimize this problem, Jianhua and McDonald (1996) proposed substituting water for a saturated salt solution; that way, seed water uptake process is retarded, which also inhibits microorganism development. Several studies have confirmed the viability of this procedure, including Rodo et al (2000) in carrot seeds, Torres and Marcos-Filho (2003) in melon, Ávila et al (2006) in radish, Dutra and Vieira (2006) in squash, Kikuti and Marcos-Filho (2007) in cauliflower, Hyatt and TeKrony (2008) in onion and tomato, Lima and MarcosFilho (2009) in cucumber, and Lopes et al (2013) in eggplant.…”

Section: Introductionmentioning

confidence: 81%

Assessment of squash seed vigor using computerized image analysis

et al. 2017

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-The objective of this study was to determine the efficacy of the SVIS ® (Seed Vigor Imaging System) to determine squash seed vigor evaluated at different stages of maturation. 'Jabras' hybrid seeds, resulting from a cross between Cucurbita maxima (female parent) and Cucurbita moschata (male parent), were used in this study. Seeds extracted from fruit at different maturation stages (harvested at 15, 30, 45, 60 and 75 days after anthesis and stored or not for 20 days after each harvest) were subjected to the following determinations: 100 seed weight, germination, saturated salt accelerated aging, and SVIS ®. This computerized system provided data on indexes of seedling vigor and uniformity of seedling development and on seedling growth. Results from SVIS ® were similar to information from the other vigor tests performed in this study, detecting significant differences in performance among seeds during the maturation process. This indicates that SVIS ® is a reliable alternative for obtaining consistent information on the physiological potential of squash seeds.Index terms: seed analysis, seedling growth, maturation, physiological potential, seed quality control.Avaliação do vigor de sementes de abóbora mediante a análise computadorizada de imagens de plântulas RESUMO -Este trabalho procurou verificar a eficiência do SVIS ® (Seed Vigor Imaging System) para determinar o vigor de sementes de abóbora colhidas durante diferentes estádios de maturação. Utilizou-se a cultivar híbrida Jabras, proveniente do cruzamento entre Cucurbita maxima (linhagem feminina) e Cucurbita moschata (linhagem masculina). As sementes foram extraídas de frutos colhidos aos 15, 30, 45, 60 e 75 dias após a antese e armazenados, ou não, durante 20 dias após cada colheita e submetidas às seguintes determinações: massa de 100 sementes, geminação, envelhecimento acelerado com solução saturada de NaCl e SVIS ® . Esta análise forneceu dados referentes aos índices de vigor e de uniformidade de desenvolvimento e ao crescimento das plântulas. Os resultados provenientes da análise computadorizada de imagens de plântulas foram semelhantes aos fornecidos pelos outros testes de vigor, detectando diferenças significativas no desempenho das sementes durante o processo de maturação. Isto demostra que o SVIS ® é uma alternativa viável para a obtenção de informações consistentes sobre o potencial fisiológico de sementes de abóbora.Termos para indexação: análise de sementes, maturação, potencial fisiológico, crescimento de plântulas, controle de qualidade de sementes.1

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“…In vegetables, the delay and the lack of uniformity in the initial plant development can reflect in the final product quality and so well reducing its commercial value, for example in lettuce, cabbage, carrot, cauliflower, eggplant and onion (Kikute & Marcos Filho, 2007). Among vegetables species propagated by seeds, the onion (Allium cepa L.) calls attention in both national and international scenario, aside with tomato (Solanum lycopersicon) due to economic importance given by high production and by income it guarantee (Rodrigues et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Bioactivator on physiological performance of tomato and onion seeds

et al. 2018

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Vegetable seeds have high commercial value, in the field after sowed seeds were exposed to unfavorable environmental conditions capable of causing reductions in the yield. Thiamethoxam is a bio-activator that may confer tolerance to stresses. In this regard, we aimed to evaluate the influence of thiamethoxam in the physiological performance of four lots of tomato and onion seeds. Seeds were treated with five doses of thiamethoxam, 0.0; 0.2; 0.4; 0.6 and 0.8 ml of product per 1000 seeds. The effects of the seed treatments were evaluated by the assessments of the first count of germination, sprouting test, cold test, accelerated aging and seedling`s emergence in the greenhouse. The experimental design was completely randomized, with four replicates per lot and by species. Data were submitted to analysis of variance and adjusted by orthogonal polynomials, using the adjusting equation based on the significance of F test at 5% probability. The bioactivator provided an increase in germination percentage, the first count of ermination, germination after accelerated aging, cold test and seedling’s emergence for low vigor seed lots. The bioactivator thiamethoxam stimulates the physiological performance of tomato and onion seeds. Doses of 0.5 to 0.6 mL of thiamethoxam per 1000 seeds of tomato and onion correspond to technical maximum efficiency.

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Potencial fisiológico de sementes de couve-flor e desempenho das plantas em campo

Cited by 16 publications

References 9 publications

Potencial fisiológico de sementes de mogango e desempenho das plantas no campo

Potencial fisiológico de sementes de mogango e desempenho das plantas no campo

Assessment of squash seed vigor using computerized image analysis

Bioactivator on physiological performance of tomato and onion seeds

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