Leaf Senescence
Mostrando 1-12 de 238 artigos, teses e dissertações.
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1. Tolerance of cerrado baru tree (Dipteryx alata) submitted to different doses of glyphosate
ABSTRACT Baru tree (Dipteryx alata Vogel.) is a been an alternative to establish an Integration Crop-Livestock-Forestry Systems (ICLFS), combining native species preservation with sustainable food production. However, the management procedure of herbicides for weed control is one of the major limiting factors to include tree components within ICLFS. Thus, th
Revista Ceres. Publicado em: 2022
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2. Integrated Chemometric Approach to Optimize Sample Preparation for Detecting Metabolic Changes Provoked by Abiotic Stress in Coffea arabica L. Leaf Fingerprints
The effects of water-deficit stress on irrigated and unirrigated field plants of Coffea arabica L. genotype IAPAR 59 were investigated. Plant extracts were obtained following an ethanol-dichloromethane-hexane statistical mixture design. Proton nuclear magnetic resonance (1H NMR) fingerprints of the extracts were discriminated using factor analysis (FA) and h
J. Braz. Chem. Soc.. Publicado em: 21/10/2019
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3. CARACTERÍSTICAS MORFOGÊNICAS E ESTRUTURAIS DO SORGO FORRAGEIRO SUBMETIDO A LOTAÇÃO CONTÍNUA COM NOVILHOS DE CORTE SUPLEMENTADOS
Resumo A morfogênese é uma valiosa ferramenta para a compreensão da dinâmica do pasto, porém os estudos morfogênicos referentes à cultura do sorgo ainda são escassos. O objetivo do presente estudo foi avaliar os efeitos de diferentes níveis de suplementação sobre as características morfogênicas do sorgo forrageiro. O experimento foi conduzido na
Ciênc. anim. bras.. Publicado em: 30/09/2019
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4. Phenology and thermal requirements of the atemoya tree (Annona cherimola Mill. X Annona squamosa L.)
ABSTRACT The present study had as the main objective the documentation and characterization of the different phenological stages, as well as the definition of the thermal requirements, of the atemoya tree for two agronomic seasons. From shoot development to senescence and beginning of the rest period eight main stages were described (shoot development, leaf
Rev. Ceres. Publicado em: 12/08/2019
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5. Produção de forragem e potencial de utilização do capim faixa-branca submetido a frequências de desfolhação
RESUMO O objetivo deste trabalho foi avaliar a produção de forragem e o potencial de utilização do capim faixa-branca submetido a frequências de desfolhação. Os tratamentos foram constituídos de quatro frequências de desfolhação: muito alta (25cm), alta (35cm), média (45cm) e baixa (55cm), avaliados em duas épocas do ano (maior e menor insolaç�
Arq. Bras. Med. Vet. Zootec.. Publicado em: 06/06/2019
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6. Defoliation, application of S-ABA and vegetal extracts on the quality of grape and wine Malbec cultivar
Resumo A alta taxa de chuvas e baixas temperaturas podem fazer com que as uvas não atinjam índices adequados de maturação. O objetivo deste trabalho foi avaliar a remoção de folhas, regulador hormonal e extratos vegetais na qualidade da uva e do vinho. Um experimento foi conduzido em um vinhedo com a cv. Malbec, no sul do Brasil, por duas safras conse
Rev. Bras. Frutic.. Publicado em: 20/05/2019
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7. Overexpression of salt-induced protein (salT) delays leaf senescence in rice
Abstract Senescence, a highly programmed process, largely determines yield and quality of crops. However, knowledge about the onset and progression of leaf senescence in crop plants is still limited. Here, we report that salt-induced protein (salT), a new gene, may be involved in leaf senescence. Overexpressing salT could prolong the duration of leaves with
Genet. Mol. Biol.. Publicado em: 31/01/2019
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8. Morphogenic, structural, productive and bromatological characteristics of Braquiária in silvopastoral system under nitrogen doses
ABSTRACT. This study aimed to evaluate the effect of different doses of nitrogen fertilization on the morphogenic, structural, productive and chemical composition of Urochloa decumbens (Stapf) R. D. Webster cv. Basilisk in a silvopastoral system with eucalyptus. The experimental treatments consisted of pastures of Basilisk cultivar, fertilized with 0, 100, 2
Acta Sci., Anim. Sci.. Publicado em: 07/01/2019
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9. Phenological characterization and temperature requirements of Annona squamosa L. in the Brazilian semiarid region
ABSTRACT The phenological growth stages of various species of monocotyledonous and dicotyledonous plants can be uniformly coded using the Biologische Bundesanstalt, Bundessortenamt, und Chemische Industrie (BBCH) scale. The aim of the present study was to determine the duration of different phenological stages and the temperature requirements of the sugar-a
An. Acad. Bras. Ciênc.. Publicado em: 20/07/2017
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10. Plant senescence and proteolysis: two processes with one destiny
Abstract Senescence-associated proteolysis in plants is a complex and controlled process, essential for mobilization of nutrients from old or stressed tissues, mainly leaves, to growing or sink organs. Protein breakdown in senescing leaves involves many plastidial and nuclear proteases, regulators, different subcellular locations and dynamic protein traffic
Genet. Mol. Biol.. Publicado em: 08/08/2016
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11. Productive and morphogenetic responses of buffel grass at different air temperatures and CO2 concentrations
The objective of the present trial was to evaluate the productive and morphogenetic characteristics of buffel grass subjected to different air temperatures and CO2 concentrations. Three cultivars of buffel grass (Biloela, Aridus and West Australian) were compared. Cultivars were grown in growth chambers at three temperatures (day/night): 26/20, 29/23, and 32
R. Bras. Zootec.. Publicado em: 2014-08
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12. Phenology, caudex growth and age estimation of Cyathea corcovadensis (Raddi) Domin (Cyatheaceae) in a subtropical forest in southern Brazil
Cyathea corcovadensis (Raddi) Domin occurs in northeastern, southeastern and southern Brazil, being widely distributed in the last. This was a three-year study, conducted from August 2008 to July 2011, in which we evaluated C. corcovadensis in a subtropical forest in southern Brazil. For the first year (August 2008 to July 2009), we monitored 30 plants on a
Acta Bot. Bras.. Publicado em: 2014-06