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Revista Brasileira de Sementes
Article . 2011 . Peer-reviewed
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Revista Brasileira de Sementes
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Hidrocondicionamento de sementes de cebola

Authors: Hölbig, Letícia Dos Santos; Baudet, Leopoldo; Villela, Francisco Amaral;

Hidrocondicionamento de sementes de cebola

Abstract

O objetivo nesse trabalho avaliar o desempenho fisiológico de sementes de cebola após hidrocondicionamento e tratamento com fungicida e recobrimento com polímero. Foram utilizadas sementes de cebola, cv. Bola Precoce, fornecidas pela Hortec, submetidas ao hidrocondicionamento fisiológico em amostras de 5,0 g de sementes embebidas em água destilada entre duas folhas de papel Germitest, com 2,5 vezes o peso seco do papel, durante 24 horas a 25 ºC. Após o hidrocondicionamento efetuou-se a secagem das sementes em estufa com circulação de ar forçado à ±35 ºC por 20 horas, até atingirem a umidade inicial de 7%. Logo após as sementes foram tratadas com o fungicida Captan® na dose de 2 g.kg-1 e recobertas com o polímero Colorseed-Rigran® na dose de 50 mL.kg-1. Os tratamentos foram: 1-testemunha; 2-sementes + fungicida; 3-sementes + polímero; 4-sementes + fungicida + polímero; 5-semente hidrocondicionada; 6-semente hidrocondicionada + fungicida; 7- semente hidrocondicionada + polímero; 8-semente hidrocondicionada + fungicida + polímero. O delineamento experimental foi inteiramente casualizado, com 4 repetições e as médias foram comparadas pelo teste de Scott-Knott no nível de 5% de significância. Pelos resultados verificou-se que o hidrocondicionamento das sementes de cebola favorece a velocidade de emergência e a porcentagem de plântulas emergidas. Sementes hidrocondicionadas originam plântulas maiores e com maior acúmulo de biomassa. O uso de polímero afeta negativamente o vigor das sementes de cebola.

Keywords

Allium cepa, fungicida, polymer, fungicide, pre-conditioning, pré-condicionamento, polímero

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    This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    5
    popularity
    This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
    Average
    influence
    This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
    Average
    impulse
    This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
    Average
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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
5
Average
Average
Average
Green
gold