Efeito do tamanho das sementes de trigo no desenvolvimento inicial das plantas e no rendimento de grãos

Bredemeier, Christian; Mundstock, Cláudio Mário; Buttenbender, Daniel

doi:10.1590/s0100-204x2001000800008

Cited by 10 publications

(6 citation statements)

References 15 publications

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“…During germination, these reserves are hydrolyzed and mobilized by the embryo (KIDSON and WESTBOY, 2000;PONTES et al, 2002). The mobilization of storage food reserves is associated with seedling growth (BREDEMEIER et al, 2001). Lipids and carbohydrates are used as source of energy during germination and post-germination events, with the latter also contributing to water distribution into the seed (CARVALHO et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Primary metabolite mobilization during germination in rosewood (Aniba rosaeodora Ducke) seeds

et al. 2008

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-This study aimed to characterize protein, oil, starch and soluble sugar mobilization as well as the activity of α-amylase during rosewood seed germination. Germination test was carried out at 25°C and the following parameters were analyzed: percentage of germination, initial, average, and final germination time. Seed reserve quantification was monitored in quiescent seeds and during different stages of radicle growth. Starch mobilization was studied in function of α-amylase activity. Germination reached 87.5% at the initial, average, and final time of 16, 21 and 30 days, respectively. Oil mobilization showed a negative linear behavior, decreasing 40% between the first and the last stage analyzed, whereas protein levels increased 34.7% during the initial period of germination. Starch content (46.4%) was the highest among those of the metabolites analyzed and starch mobilization occurred inversely to the observed for soluble sugars; α-amylase activity increased until the 15 th day, a period before radicle emission and corresponding to the highest starch mobilization. The high percentage of rosewood seed germination may be related to the controlled condition used in the germination chamber as well as to high seed reserve mobilization, in special oil and starch.Keywords: α-amylase, carbohydrates and oil. MOBILIZAÇÃO DE METABÓLITOS PRIMÁRIOS DURANTE A GERMINAÇÃO DE SEMENTES DE PAU-ROSA (Aniba rosaeodora Ducke)

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Section: Introductionmentioning

confidence: 99%

Primary metabolite mobilization during germination in rosewood (Aniba rosaeodora Ducke) seeds

et al. 2008

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“…The seeds physic attributes are important to the implementation of crops at the field, where the seeds size is a parameter that can determine the effects on the physiologic quality (Pádua, 2010;Torres, 1994), although, it is underused to clover seeds. Nevertheless, in crops seeds it is observed positive effects of the size of the seeds in the physiologic quality and production (Bredemeier, 2001;Pádua, 2010;Cangussú, 2013). The size of the seeds is a considerable factor to the germination and initial phase of the crops growth, but the seeds size difference is conditioned to the dissimilarities in the reserve amounts, affecting the crop growth and development on aposteriori (Ahirwar, 2012;Szareski et al, 2018b).…”

Section: Introductionmentioning

confidence: 99%

Growth and Vigor Analysis of Crimson Clover Seeds Obtained Through Different Seeds Size

Dubal¹,

Carvalho²,

Szareski³

et al. 2019

JAS

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The objective to evaluate the effect of the size of the crimson clover seeds under the vigor of produced seeds, as well the growth and development throughout the crop cycle. The work was conducted in the experimental area of the Plant Science Department of the Federal University of Pelotas, in the state of Rio Grande do Sul, Brazil. It were used crimson clover seeds (Trifolium incarnatum L.), cultivar “Crimson Clover”. The seeds size effect affected the growth and the partition of the assimilated in the crimson clover plants, where medium size seeds raise the biomass accumulation in the different plants structures. Seeds of crimson clover produced from plants originated from different seed sizes did not presented difference in relation to the physiologic quality, seedling emergence and speed of emergence index.

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“…Pesquisas de morfoanatomia, especialmente com plântulas por estarem no período mais crítico da vida do vegetal (Crestana & Beltrati, 1988), tentam mostrar os efeitos que o ambiente e os outros fatores bióticos e abióticos do meio exercem sobre esses indivíduos (Modesto et al, 1996;Bredemeier et al, 2001;Ceolin et al, 2007;Nery et al, 2007 ). Assim como trabalhos para observar a influência que agrotóxicos e insumos agrícolas exercem sobre a estrutura de várias espécies, que têm o intuito de verificar a toxicidade destes produtos sobre a fisiologia e o desenvolvimento dos vegetais (Martins & Castro, 1999;Negrisoli et al, 2004;Castro et al, 2005).…”

Section: Introductionunclassified

Efeito de sistemas de consórcio e inseticida na formação dos estômatos em plântulas de erva-doce (Foeniculum vulgare Mill.)

Azevêdo

Bruno

Quirino

et al. 2012

Rev. bras. plantas med.

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RESUMO:Foeniculum vulgare Mill., pertencente à família Apiacea, é conhecida como erva-doce e apresenta grande importância medicinal e comercial, tanto no Brasil como em vários outros países. Objetivou-se com esta pesquisa, estudar o desenvolvimento dos estômatos em plântulas de F. vulgare oriundas de sementes produzidas em sistemas de consórcio erva-doce X algodão e com aplicação do inseticida monocrotofós. A erva-doce foi cultivada em consórcio com algodão colorido cultivar BRS Safira, sendo utilizados os seguintes tratamentos: 1A2E, uma fileira de algodão e duas de erva-doce; 2A1E, duas fileiras de algodão e uma de erva-doce; ES, erva-doce solteira; onde foram distribuídos com e sem aplicação de inseticida, totalizando seis tratamentos. As sementes colhidas foram semeadas em areia e mantidas em casa de vegetação por 25 dias. Partes das plântulas (zona de transição, caule, cotilédones e folhas) foram seccionadas à mão livre, coradas e montadas em lâminas com glicerina para observação em microscópio. Foram avaliadas as seguintes características: número de estômatos, diâmetro polar e equatorial dos estômatos e número de cloroplastos nas células-guarda. Os dados foram analisados em delineamento inteiramente casualizado e distribuídos em arranjo fatorial 3X2; sendo realizado teste de Tukey a 5% de probabilidade. Na zona de transição e no caule observou-se aumento do número e do diâmetro polar dos estômatos quando foram utilizados sistemas de consórcio. Nos cotilédones, a erva-doce solteira proporcionou maior número de estômatos, porém com menor diâmetro e com menor quantidade de cloroplastos. Já na folha, os consórcios influenciaram positivamente o número de estômatos e de cloroplastos. De forma geral, os sistemas de consórcio e o inseticida influenciaram positivamente o desenvolvimento dos estômatos das plântulas de erva-doce. Palavras-chave:Apiaceae, cloroplastos, fotossíntese, germinação ABSTRACT: Effects of intercropping systems and insecticide in formation of stomata in fennel seedlings. Foeniculum vulgare Mill., belonging to the family Apiaceae, is known as fennel and has great medicinal and commercial importance, both in Brazil and in several other countries. The objective of this research was to study the development of stomata of F. vulgare seedlings grown from seeds produced in intercropping systems fennel and cotton, with application of insecticide monocrotophos. The fennel was grown in association with colored cotton BRS Safira, with the following treatments: 1A2E, one rows of cotton and two fennel; 2A1E, two rows of cotton and one fennel; ES, fennel single; were distributed with and without application of insecticide, total six treatments. The seeds were sown in sand and kept in a greenhouse for 25 days. Parts of seedlings (transition zone, stem, cotyledons and leaves) were cut freehand, stained and mounted on slides with glycerol for observation under microscope. Were evaluated the following characteristics: stomata number, polar and equatorial diameter of the stomata and chloroplasts number in guard ...

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Efeito do tamanho das sementes de trigo no desenvolvimento inicial das plantas e no rendimento de grãos

Cited by 10 publications

References 15 publications

Primary metabolite mobilization during germination in rosewood (Aniba rosaeodora Ducke) seeds

Primary metabolite mobilization during germination in rosewood (Aniba rosaeodora Ducke) seeds

Growth and Vigor Analysis of Crimson Clover Seeds Obtained Through Different Seeds Size

Efeito de sistemas de consórcio e inseticida na formação dos estômatos em plântulas de erva-doce (Foeniculum vulgare Mill.)

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