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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
13/12/1999 |
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Data da última atualização: |
13/12/1999 |
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Autoria: |
LIU, M-C; CHEN, W-H. |
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Afiliação: |
Taiwan Sugar Research Institute, Tainan, Republic of China, Received August 4, 1977. |
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Título: |
Organogenesis and chromosome nuber in callus derived from cassava anthers |
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Ano de publicação: |
1978 |
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Fonte/Imprenta: |
CAN, J. BOT. vol. 56. n.10. p.1286-1291, 1978 |
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Idioma: |
Inglês |
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Conteúdo: |
The use of in vitro culture technique for production of haploid higher plants has been increasingly important (Vasil and Nitsch 1975; Reinert and bajaj 1977). Reinert and bajaj (1977) have reviewed that anthers from more than 18 genera covering 25 species of dicotyledons have been cultured to generate callus, embryos, and (or) whole plants. Even the most difficult materials such as cereals (7 genera covering 16 species) could also be cultured to induce organogenesis and (or) form complete plants (Clapham 1977). However, these successful works have not included cassava (Manihot esculenta crantz), an economically important tropical crop which suplies staple foods to an estimated 300 million peoploe around the world (Nestel 1974). |
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Palavras-Chave: |
Callus cells derived; Celulas derivadas de calos; Cultura de tecidos. |
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Thesagro: |
Mandioca; Manihot Esculenta; Organogénese. |
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Thesaurus Nal: |
cassava; organogenesis; tissue culture. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01391naa a2200241 a 4500
001 1648467
005 1999-12-13
008 1978 bl --- 0-- u #d
100 1 $aLIU, M-C
245 $aOrganogenesis and chromosome nuber in callus derived from cassava anthers
260 $c1978
520 $aThe use of in vitro culture technique for production of haploid higher plants has been increasingly important (Vasil and Nitsch 1975; Reinert and bajaj 1977). Reinert and bajaj (1977) have reviewed that anthers from more than 18 genera covering 25 species of dicotyledons have been cultured to generate callus, embryos, and (or) whole plants. Even the most difficult materials such as cereals (7 genera covering 16 species) could also be cultured to induce organogenesis and (or) form complete plants (Clapham 1977). However, these successful works have not included cassava (Manihot esculenta crantz), an economically important tropical crop which suplies staple foods to an estimated 300 million peoploe around the world (Nestel 1974).
650 $acassava
650 $aorganogenesis
650 $atissue culture
650 $aMandioca
650 $aManihot Esculenta
650 $aOrganogénese
653 $aCallus cells derived
653 $aCelulas derivadas de calos
653 $aCultura de tecidos
700 1 $aCHEN, W-H.
773 $tCAN, J. BOT. vol. 56.$gn.10. p.1286-1291, 1978
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
01/12/2021 |
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Data da última atualização: |
01/12/2021 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
DUDAS, R. T.; PASINI, A.; BROWN, G. G.; BARTZ, M. L. C. |
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Afiliação: |
RAFAELA T. DUDAS, Universidade Positivo; AMARILDO PASINI, UEL; GEORGE GARDNER BROWN, CNPF; MARIE L. C. BARTZ, University of Coimbra. |
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Título: |
Perceptions on soil macrofauna in the agricultural field. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
In: GLOBAL SYMPOSIUM ON SOIL BIODIVERSITY, 2021, Rome. Keep soil alive, protect soil biodiversity: proceedings. Rome: FAO, 2021. p. 879-885. |
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Idioma: |
Inglês |
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Conteúdo: |
In this study we have evaluated social perceptions on soil macrofauna among farmers and other stakeholders working in an agricultural context in Brazil. During the National No-Tillage Meetings of 2008 and 2018, we have interviewed a total of 171 people (87 in 2008 and 84 in 2018), where 35 percent were farmers (33 percent in 2008, and 36 percent in 2018). A questionnaire with 12 questions was used to determine the profile of interviewees, their soil management practices and perceptions regarding soil macrofauna. From a list of nine soil organisms only earthworms, spiders and centipedes, generally, were not considered pests. When asked about pest incidence, 61-73 percent of the interviewees noticed an increase, mostly related to the excessive use of pesticides (25-33 percent) and monocultures (38-55 percent) for both years. When asked about soil health indicators, more than 80 percent mentioned the presence of a large number of taxa, even including some that were considered pests earlier. The results showed a significant increase in pest incidence after 10 years, together with a decreasing trend in prevalence of good practices. This is profoundly worrisome and highlights the urgent need to foster capacity building and to stimulate more effort in dissemination of information about the importance and function of soil biodiversity, and their vast benefits to society. |
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Palavras-Chave: |
Bioindicators; Soil macrofauna. |
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Thesaurus NAL: |
Soil quality. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/228345/1/Perceptions-Proceedings-of-the-Global-Symposium-on-Soil-Biodiversity-2021-2.pdf
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Marc: |
LEADER 01992nam a2200181 a 4500
001 2136900
005 2021-12-01
008 2021 bl uuuu u00u1 u #d
100 1 $aDUDAS, R. T.
245 $aPerceptions on soil macrofauna in the agricultural field.$h[electronic resource]
260 $aIn: GLOBAL SYMPOSIUM ON SOIL BIODIVERSITY, 2021, Rome. Keep soil alive, protect soil biodiversity: proceedings. Rome: FAO, 2021. p. 879-885.$c2021
520 $aIn this study we have evaluated social perceptions on soil macrofauna among farmers and other stakeholders working in an agricultural context in Brazil. During the National No-Tillage Meetings of 2008 and 2018, we have interviewed a total of 171 people (87 in 2008 and 84 in 2018), where 35 percent were farmers (33 percent in 2008, and 36 percent in 2018). A questionnaire with 12 questions was used to determine the profile of interviewees, their soil management practices and perceptions regarding soil macrofauna. From a list of nine soil organisms only earthworms, spiders and centipedes, generally, were not considered pests. When asked about pest incidence, 61-73 percent of the interviewees noticed an increase, mostly related to the excessive use of pesticides (25-33 percent) and monocultures (38-55 percent) for both years. When asked about soil health indicators, more than 80 percent mentioned the presence of a large number of taxa, even including some that were considered pests earlier. The results showed a significant increase in pest incidence after 10 years, together with a decreasing trend in prevalence of good practices. This is profoundly worrisome and highlights the urgent need to foster capacity building and to stimulate more effort in dissemination of information about the importance and function of soil biodiversity, and their vast benefits to society.
650 $aSoil quality
653 $aBioindicators
653 $aSoil macrofauna
700 1 $aPASINI, A.
700 1 $aBROWN, G. G.
700 1 $aBARTZ, M. L. C.
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Embrapa Florestas (CNPF) |
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