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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
15/12/2020 |
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Data da última atualização: |
15/12/2020 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
PEREIRA, P. R. M.; BOLFE, E. L.; RODRIGUES, T. C. S.; SANO, E. E. |
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Afiliação: |
EDSON LUIS BOLFE, CNPTIA; EDSON EYJI SANO, CPAC. |
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Título: |
Dynamics of agricultural expansion in areas of the Brazilian savanna between 2000 and 2019. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, v. 43-3, B3, p. 1607-1614, 2020. |
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DOI: |
https://doi.org/10.5194/isprs-archives-XLIII-B3-2020-1607-2020 |
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Idioma: |
Inglês |
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Notas: |
Edition of proceedings of the 2020 edition of the XXIVth ISPRS Congres. |
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Conteúdo: |
The information survey and the land use and land cover (LULC) change monitoring are essential to understand the changes in the landscape and their impacts on the environment. The Brazilian savanna (Cerrado) constitutes the second largest biome in Brazil and is highly relevant because of its rich biodiversity. The Cerrado in the Maranhão State is facing a high conversion rate of its natural vegetation into agricultural systems because of the agricultural development policies. This article aims to analyze and quantify the LULCC in the Chapadinha microregion, Maranhão State, Brazil, by comparing Landsat satellite images from 2000, 2009, and 2019. The Chapadinha microregion covers an area of more than 14,000 km² and, since 2000, presents significant spatial transformations related to agricultural expansion. The goal of this expansion is the economic development based on agricultural commodities (mainly soybean monoculture) for exportation. The study area is the third microregion in terms of agricultural production in Maranhão. The satellite image interpretation showed ... Mostrar Tudo |
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Palavras-Chave: |
Agricultura mapping; Cobertura da terra; Geobia; Land Use and Land Cover; Mapeamento agrícola. |
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Thesagro: |
Cerrado; Uso da Terra. |
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Categoria do assunto: |
Z Localizações Geográficas |
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Marc: |
LEADER 02041nam a2200253 a 4500
001 2128153
005 2020-12-15
008 2020 bl uuuu u01u1 u #d
024 7 $ahttps://doi.org/10.5194/isprs-archives-XLIII-B3-2020-1607-2020$2DOI
100 1 $aPEREIRA, P. R. M.
245 $aDynamics of agricultural expansion in areas of the Brazilian savanna between 2000 and 2019.$h[electronic resource]
260 $aThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, v. 43-3, B3, p. 1607-1614$c2020
500 $aEdition of proceedings of the 2020 edition of the XXIVth ISPRS Congres.
520 $aThe information survey and the land use and land cover (LULC) change monitoring are essential to understand the changes in the landscape and their impacts on the environment. The Brazilian savanna (Cerrado) constitutes the second largest biome in Brazil and is highly relevant because of its rich biodiversity. The Cerrado in the Maranhão State is facing a high conversion rate of its natural vegetation into agricultural systems because of the agricultural development policies. This article aims to analyze and quantify the LULCC in the Chapadinha microregion, Maranhão State, Brazil, by comparing Landsat satellite images from 2000, 2009, and 2019. The Chapadinha microregion covers an area of more than 14,000 km² and, since 2000, presents significant spatial transformations related to agricultural expansion. The goal of this expansion is the economic development based on agricultural commodities (mainly soybean monoculture) for exportation. The study area is the third microregion in terms of agricultural production in Maranhão. The satellite image interpretation showed ... Mostrar Tudo
650 $aCerrado
650 $aUso da Terra
653 $aAgricultura mapping
653 $aCobertura da terra
653 $aGeobia
653 $aLand Use and Land Cover
653 $aMapeamento agrícola
700 1 $aBOLFE, E. L.
700 1 $aRODRIGUES, T. C. S.
700 1 $aSANO, E. E.
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Registro original: |
Embrapa Cerrados (CPAC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
10/06/2022 |
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Data da última atualização: |
11/07/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
ZANELLA, L. B.; DEGENHARDT, J.; STEINER, N.; TOMASI, J.; KESTRING, D. R.; QUOIRIN, M. |
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Afiliação: |
LAUDIANE BRUNA ZANELLA, Federal University of Parana; JULIANA DEGENHARDT GOLDBACH, CNPF; NEUSA STEINER, Federal University of Santa Catarina; JÉSSICA TOMASI, Federal University of Parana; DAIANE RIGONI, CNPF; MARGUERITE QUOIRIN, Federal University of Parana. |
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Título: |
Initiation of somatic embryogenesis in Pinus caribaea var. hondurensis using mature female gametophytes as explants. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
South African Journal of Botany, v. 149, p. 124-133, 2022. |
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DOI: |
https://doi.org/10.1016/j.sajb.2022.05.053 |
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Idioma: |
Português |
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Conteúdo: |
ABSTRACT: Due to the difficulties of harvesting immature cones in genetic breeding orchards, such as high costs and the considerable time required, this study aimed to evaluate the somatic embryogenesis (SE) initiation of Pinus caribaea var. hondurensis using the mature female gametophyte as the initial explant. The basic medium for embryogenesis initiation was composed of QL (Quoirin and Lepoivre, 1977) nutrients, sucrose, myo-inositol, glutamine, casein hydrolisate, thiamine, 2,4-D, BAP and agar. This medium was compared with DCR (Gupta and Durzan, 1985) and WV5 (Coke, 1996) media, supplemented or not with 0.1 g L?1 folic acid (FA). Afterwards, three concentrations of 2,4-D (10, 20 and 30 ?M) combined or not with BAP (2, 4 and 8 ?M) were tested. After 90 days the percentages of explants with embryogenic tissue (ET), embryo-like structures and oxidation were evaluated. We observed somatic tissue initiation` on mature female gametophytes. On QL medium supplemented with FA, the initiation was observed on up to 42% of female gametophytes. The combination of 10 ?M 2,4-D and 4 ?M BAP resulted in the highest initiation rate. The formation of ET was confirmed in all treatments by a histochemical test. Embryo-like structures developed on QL medium supplemented with FA, were first transferred to basic medium supplemented with 1.5 g L?1 AC for 30 days and finally to the same medium supplemented with 10% polyethylene glycol 3350 and 120 µM abscisic acid. The expression of SERK-1 and GER-1 genes was analyzed. SERK-1 was expressed only in the ET, while GER-1 was expressed in both the embryogenic and non-embryogenic tissues (non-ET). However, the somatic embryos studied through morphological and histochemical tests proved to be abnormal and did not develop further. MenosABSTRACT: Due to the difficulties of harvesting immature cones in genetic breeding orchards, such as high costs and the considerable time required, this study aimed to evaluate the somatic embryogenesis (SE) initiation of Pinus caribaea var. hondurensis using the mature female gametophyte as the initial explant. The basic medium for embryogenesis initiation was composed of QL (Quoirin and Lepoivre, 1977) nutrients, sucrose, myo-inositol, glutamine, casein hydrolisate, thiamine, 2,4-D, BAP and agar. This medium was compared with DCR (Gupta and Durzan, 1985) and WV5 (Coke, 1996) media, supplemented or not with 0.1 g L?1 folic acid (FA). Afterwards, three concentrations of 2,4-D (10, 20 and 30 ?M) combined or not with BAP (2, 4 and 8 ?M) were tested. After 90 days the percentages of explants with embryogenic tissue (ET), embryo-like structures and oxidation were evaluated. We observed somatic tissue initiation` on mature female gametophytes. On QL medium supplemented with FA, the initiation was observed on up to 42% of female gametophytes. The combination of 10 ?M 2,4-D and 4 ?M BAP resulted in the highest initiation rate. The formation of ET was confirmed in all treatments by a histochemical test. Embryo-like structures developed on QL medium supplemented with FA, were first transferred to basic medium supplemented with 1.5 g L?1 AC for 30 days and finally to the same medium supplemented with 10% polyethylene glycol 3350 and 120 µM abscisic acid. The expression of SERK-1 and G... Mostrar Tudo |
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Palavras-Chave: |
Embryogenic tissues; GER-1; QL medium; SERK-1; Tecidos embriogênicos. |
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Thesagro: |
Ácido Fólico. |
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Thesaurus NAL: |
Folic acid; Pinus caribaea var. hondurensis. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02667naa a2200289 a 4500
001 2143947
005 2022-07-11
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.sajb.2022.05.053$2DOI
100 1 $aZANELLA, L. B.
245 $aInitiation of somatic embryogenesis in Pinus caribaea var. hondurensis using mature female gametophytes as explants.$h[electronic resource]
260 $c2022
520 $aABSTRACT: Due to the difficulties of harvesting immature cones in genetic breeding orchards, such as high costs and the considerable time required, this study aimed to evaluate the somatic embryogenesis (SE) initiation of Pinus caribaea var. hondurensis using the mature female gametophyte as the initial explant. The basic medium for embryogenesis initiation was composed of QL (Quoirin and Lepoivre, 1977) nutrients, sucrose, myo-inositol, glutamine, casein hydrolisate, thiamine, 2,4-D, BAP and agar. This medium was compared with DCR (Gupta and Durzan, 1985) and WV5 (Coke, 1996) media, supplemented or not with 0.1 g L?1 folic acid (FA). Afterwards, three concentrations of 2,4-D (10, 20 and 30 ?M) combined or not with BAP (2, 4 and 8 ?M) were tested. After 90 days the percentages of explants with embryogenic tissue (ET), embryo-like structures and oxidation were evaluated. We observed somatic tissue initiation` on mature female gametophytes. On QL medium supplemented with FA, the initiation was observed on up to 42% of female gametophytes. The combination of 10 ?M 2,4-D and 4 ?M BAP resulted in the highest initiation rate. The formation of ET was confirmed in all treatments by a histochemical test. Embryo-like structures developed on QL medium supplemented with FA, were first transferred to basic medium supplemented with 1.5 g L?1 AC for 30 days and finally to the same medium supplemented with 10% polyethylene glycol 3350 and 120 µM abscisic acid. The expression of SERK-1 and GER-1 genes was analyzed. SERK-1 was expressed only in the ET, while GER-1 was expressed in both the embryogenic and non-embryogenic tissues (non-ET). However, the somatic embryos studied through morphological and histochemical tests proved to be abnormal and did not develop further.
650 $aFolic acid
650 $aPinus caribaea var. hondurensis
650 $aÁcido Fólico
653 $aEmbryogenic tissues
653 $aGER-1
653 $aQL medium
653 $aSERK-1
653 $aTecidos embriogênicos
700 1 $aDEGENHARDT, J.
700 1 $aSTEINER, N.
700 1 $aTOMASI, J.
700 1 $aKESTRING, D. R.
700 1 $aQUOIRIN, M.
773 $tSouth African Journal of Botany$gv. 149, p. 124-133, 2022.
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