Qualidade fisiológica e tamanho de sementes de cenoura

Rodo, Angelica Brod; Perleberg, Cleiton Stigger; Torres, Salvador Barros; Gentil, Daniel Felipe de Oliveira; Neto, João Tessarioli

doi:10.1590/s0103-90162001000100031

Cited by 18 publications

(11 citation statements)

References 6 publications

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“…Some authors have devoted themselves to study this interaction, indicating temperature values of 41°C/72h for onion seeds (TeKrony, 1995); 41°C/72h for green peppers (TeKrony, 1995;Panobianco & Marcos Filho, 1998); 45°C/48h for broccoli (Tebaldi et al, 1999); 41°C/48h for eggplant (Bhéring et al, 2001); 42°C/48h for melon (Cano-Ríos et al, 2000); 41°C/48h for carrot (Rodo et al, 2001) and 41°C/72h for tomato (Panobianco & Marcos Filho, 2001).…”

Section: Introductionmentioning

confidence: 99%

Accelerated aging of melon seeds

Torres

Filho

2003

Sci. agric. (Piracicaba, Braz.)

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Accelerated aging is one of the most useful tests used for the evaluation of seed vigor but it is seldomly used to test melon (Cucumis melo L.) seeds. The objective this research was to compare different procedures of the accelerated aging test to evaluate the physiological quality of melon seeds and the efficiency of using saturated salt solution for the control of water uptake by seeds. Five seed lots each of the hybrids AF-646 and AF-682 were tested for germination, seedling emergence, traditional accelerated aging (periods 0f 48, 72 and 96 hours, at 38 or 41°C) and salt saturated accelerated aging. The accelerated aging test (traditional procedure and with salt solution) for 72h and 96h, at 38 or 41°C was sensitive to detect differences in the physiological quality of the seeds. It was also observed that the seed water content after salt saturated accelerated aging was lower and more uniform, thus presenting advantagens in relation to the traditional procedure.

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Section: Introductionmentioning

confidence: 99%

Accelerated aging of melon seeds

Torres

Filho

2003

Sci. agric. (Piracicaba, Braz.)

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“…In reports from Rodo, Perleberg, Torres, Gentil, and Tessaroli Neto (2001), and Gaspar and Nakagawa (2002) seed size is one of the factors that can influence seedling germination and vigor.…”

Section: Seed Characterizationmentioning

confidence: 99%

Hovenia dulcis T. Fruit Colorimetry for Determination of Physiological Maturity of Seeds

Cruz¹,

Rocha²,

Ristau³

et al. 2017

JAS

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Hovenia dulcis is a pioneering species, fast growing and considered exotic and invasive. The species has multiplicity of uses and reproduces by seeds. In this sense, it is extremely important to know the physiological maturity of H. dulcis seeds. The objective of the research was to determine if the maturation of H. dulcis seeds is achieved concomitantly with the physiological maturation of the false fruit. Seeds were obtained from seven adult trees located in Marechal Cândido Rondon, PR. The fruits were classified in five maturation stages, determined according to color chart. In order to verify the effects of the maturation stages of the false fruit on the physiological maturity seeds biometric characteristics, moisture content, germination, vigor and seedling development were evaluated. Seeds of H. dulcis presented evolution of maturation at the same time as the false fruit. For the evaluated parameters, seeds classified as stage 1 (7.5 YR 5/8) showed the best results for seed germination and seedling development, in contrast to those classified as stage 5 (2.5 YR 3/4), which presented low germination and delay in the development of seeds and seedlings.

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“…Em cenoura, a diferença de tamanho de semente é um fato característico devido a fecundação desuniforme pela formação cronológica diferenciada das umbelas, formando sementes mais pesadas nas umbelas primárias e menores tamanhos nas umbelas secundária, e assim sucessivamente. Esta correlação de maior massa com maior vigor foi observada por Santos (2010) com sementes de cenoura, ao contrário de Rodo et al (2001), que justificaram os diferentes resultados por influência das cultivares, lote e época de produção. Cardoso, Nomura e Silveira (2002) verificaram o mesmo comportamento para repolho, ou seja, quanto maior a massa da semente, maior o vigor.…”

Section: *Means Followed By Same Letter In Column Don't Differ By Tukunclassified

Poda apical para produção de frutos e sementes de abóbora.

et al. 2014

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Resumo -A poda apical estimula a emissão de brotos laterais, com isso pode haver maior formação de flores e frutos e, consequentemente, maior número de sementes. Diante disso, objetivou-se avaliar o efeito da poda da haste principal para a produção de frutos e sementes de abóbora. Os tratamentos foram constituídos de plantas sem poda, com poda no sexto, oitavo e décimo nó da haste principal. O delineamento experimental foi em blocos casualizados, com seis repetições. Foi utilizada a linhagem de abóbora do tipo braquítica do Banco de Germoplasma da Universidade Estadual Paulista/Faculdade de Ciências Agronômicas. Foram avaliadas as seguintes características: número de ramos por planta, posição dos frutos nos ramos da planta, produção (número e massa) de frutos por planta; produtividade; massa, comprimento e diâmetro do pescoço e bojo do fruto; massa e número de sementes por fruto; produtividade de sementes e qualidade das sementes (teste de germinação; primeira contagem de germinação; massa de mil sementes; emergência; índice de velocidade de emergência e envelhecimento acelerado). Houve diferença significativa apenas para número de ramos secundários por planta e massa de mil sementes, com maiores valores para as plantas que não foram podadas. Foram obtidas elevada média de germinação (94%) e alta produtividade de frutos (16,9 t ha -1 ) e sementes (148 kg ha -1 ). Conclui-se que a poda apical não influencia a produção de frutos e sementes de abóbora, bem como a qualidade fisiológica das sementes.Palavras-chave -Cucurbita moschata. Dominância apical. Germinação. Tamanho de semente. Vigor.Abstract -The tip pruning stimulates the emission of lateral shoots, thus can produce higher number of flowers, fruits and seeds. This work aimed to evaluate the effect of apex pruning on fruit and seed production in pumpkin. The treatments consisted of plants without pruning, with pruning in the sixth, eighth and tenth node of main stem. The experimental design was a randomized block, with six replications. It was studied a line of pumpkin of the Germplasm Bank of the Universidade Estadual Paulista/Faculdade de Ciências Agronômicas. The characteristics evaluated were: number of branches per plant and fruit position in branches of the plant production (number and weight) of fruits per plant, fruit yield, fruit average weight, fruit length and diameter, seed weight per fruit, seed yield and quality (germination test, first count, thousand seed weight, emergence, speed of emergence and accelerated aging). There was a significant difference only for number of secondary branches per plant and thousand seed weight, with larger values for plants that have not been pruned. It was obtained high average of germination (94%) and good fruit (16.9 t ha -1 ) and seed (148 kg ha -1 ) yield. The apex pruning does not influence the production of fruits and seeds, as well as the physiological seed quality in pumpkin.

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Qualidade fisiológica e tamanho de sementes de cenoura

Cited by 18 publications

References 6 publications

Accelerated aging of melon seeds

Accelerated aging of melon seeds

Hovenia dulcis T. Fruit Colorimetry for Determination of Physiological Maturity of Seeds

Poda apical para produção de frutos e sementes de abóbora.

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