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Registro Completo |
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Biblioteca(s): |
Embrapa Acre. |
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Data corrente: |
05/04/2021 |
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Data da última atualização: |
28/06/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
COSTA, N. A.; AZÊVEDO, H. S. F. da S.; SILVA, L. M. da; CUNHA, E. F. M.; SIVIERO, A.; CAMPOS, T. de. |
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Afiliação: |
NATHALIA ALMEIDA COSTA, Universidade Federal do Acre (Ufac); HELLEN SANDRA FREIRES DA SILVA AZÊVEDO, Rede Bionorte; LUCIELIO MANOEL DA SILVA, CPAF-AC; ELISA FERREIRA MOURA CUNHA, CPATU; AMAURI SIVIERO, CPAF-AC; TATIANA DE CAMPOS, CPAF-AC. |
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Título: |
Molecular characterizaion and core collection evaluation of Manihot esculenta Crantz. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Bioscience Journal, v. 36, p. 22-35, Nov./Dec. 2020. Supp. 1. |
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ISSN: |
1981-3163 |
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DOI: |
http://dx.doi.org/ BJ-v36n0a2020-48247 |
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Idioma: |
Inglês |
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Conteúdo: |
Cassava is one of the most important subsistence crops in tropical regions. It is necessary to preserve and to know the genetic diversity existent for the adequate use of genetic resources. The evaluation of genetic diversity among genotypes results in information about potential parents in breeding programs, allows duplicates identification, and facilitates germplasm exchange between research institutions. The objective of this study was to characterize the genetic diversity of cassava accessions of North Brazil region. A total of 106 accessions were analyzed using ten microsatellite markers. The genetic parameters estimated were: expected heterozygosity (HE), observed heterozygosity (HO) and polymorphic information content (PIC). Clustering was performed using the UPGMA and Neighbor-Joining (NJ) method. Bayesian analysis, analysis of principal coordinates and identification of a core collection were also used. The ten loci amplified 8,40 alleles on average. The average heterozygosity estimates were: HE = 0.71, HO = 0.58 and PIC = 0.72. Genetic distances ranged from 0.158 to 0.908. Six (5,66%) accesses were redundant. Clustering and dispersion analysis didn?t differentiate bitter from sweet cassava, and there wasn?t correlation between groups and collect origin. The core collection consisted of 22 individuals that represented 94% of total allelic diversity and 20,75% of the base collection. The results indicate high dissimilarity between the accessions and allowed the detection of redundant genotypes, showing the use of genetic markers as informative tools for the management of collections. MenosCassava is one of the most important subsistence crops in tropical regions. It is necessary to preserve and to know the genetic diversity existent for the adequate use of genetic resources. The evaluation of genetic diversity among genotypes results in information about potential parents in breeding programs, allows duplicates identification, and facilitates germplasm exchange between research institutions. The objective of this study was to characterize the genetic diversity of cassava accessions of North Brazil region. A total of 106 accessions were analyzed using ten microsatellite markers. The genetic parameters estimated were: expected heterozygosity (HE), observed heterozygosity (HO) and polymorphic information content (PIC). Clustering was performed using the UPGMA and Neighbor-Joining (NJ) method. Bayesian analysis, analysis of principal coordinates and identification of a core collection were also used. The ten loci amplified 8,40 alleles on average. The average heterozygosity estimates were: HE = 0.71, HO = 0.58 and PIC = 0.72. Genetic distances ranged from 0.158 to 0.908. Six (5,66%) accesses were redundant. Clustering and dispersion analysis didn?t differentiate bitter from sweet cassava, and there wasn?t correlation between groups and collect origin. The core collection consisted of 22 individuals that represented 94% of total allelic diversity and 20,75% of the base collection. The results indicate high dissimilarity between the accessions and allowed the detec... Mostrar Tudo |
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Palavras-Chave: |
Acre; Amazonas; Análise bayesiana; Bayesin analysis; Fitomejoramiento; Heterocigosidad; Heterozigosidade; Manioc; Marcador microssatélite; Método Neighbor-Joining; Método UPGMA; Repeticiones de microsatélite; Roraima; São Paulo; Variación genetica; Yuca. |
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Thesagro: |
Mandioca; Manihot Esculenta; Marcador Genético; Melhoramento Genético Vegetal; Variação Genética. |
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Thesaurus Nal: |
Cassava; Genetic variation; Heterozygosity; Microsatellite repeats; Plant breeding. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/222341/1/27114.pdf
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Marc: |
LEADER 03098naa a2200517 a 4500
001 2131056
005 2021-06-28
008 2020 bl uuuu u00u1 u #d
022 $a1981-3163
024 7 $ahttp://dx.doi.org/ BJ-v36n0a2020-48247$2DOI
100 1 $aCOSTA, N. A.
245 $aMolecular characterizaion and core collection evaluation of Manihot esculenta Crantz.$h[electronic resource]
260 $c2020
520 $aCassava is one of the most important subsistence crops in tropical regions. It is necessary to preserve and to know the genetic diversity existent for the adequate use of genetic resources. The evaluation of genetic diversity among genotypes results in information about potential parents in breeding programs, allows duplicates identification, and facilitates germplasm exchange between research institutions. The objective of this study was to characterize the genetic diversity of cassava accessions of North Brazil region. A total of 106 accessions were analyzed using ten microsatellite markers. The genetic parameters estimated were: expected heterozygosity (HE), observed heterozygosity (HO) and polymorphic information content (PIC). Clustering was performed using the UPGMA and Neighbor-Joining (NJ) method. Bayesian analysis, analysis of principal coordinates and identification of a core collection were also used. The ten loci amplified 8,40 alleles on average. The average heterozygosity estimates were: HE = 0.71, HO = 0.58 and PIC = 0.72. Genetic distances ranged from 0.158 to 0.908. Six (5,66%) accesses were redundant. Clustering and dispersion analysis didn?t differentiate bitter from sweet cassava, and there wasn?t correlation between groups and collect origin. The core collection consisted of 22 individuals that represented 94% of total allelic diversity and 20,75% of the base collection. The results indicate high dissimilarity between the accessions and allowed the detection of redundant genotypes, showing the use of genetic markers as informative tools for the management of collections.
650 $aCassava
650 $aGenetic variation
650 $aHeterozygosity
650 $aMicrosatellite repeats
650 $aPlant breeding
650 $aMandioca
650 $aManihot Esculenta
650 $aMarcador Genético
650 $aMelhoramento Genético Vegetal
650 $aVariação Genética
653 $aAcre
653 $aAmazonas
653 $aAnálise bayesiana
653 $aBayesin analysis
653 $aFitomejoramiento
653 $aHeterocigosidad
653 $aHeterozigosidade
653 $aManioc
653 $aMarcador microssatélite
653 $aMétodo Neighbor-Joining
653 $aMétodo UPGMA
653 $aRepeticiones de microsatélite
653 $aRoraima
653 $aSão Paulo
653 $aVariación genetica
653 $aYuca
700 1 $aAZÊVEDO, H. S. F. da S.
700 1 $aSILVA, L. M. da
700 1 $aCUNHA, E. F. M.
700 1 $aSIVIERO, A.
700 1 $aCAMPOS, T. de
773 $tBioscience Journal$gv. 36, p. 22-35, Nov./Dec. 2020. Supp. 1.
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Registro original: |
Embrapa Acre (CPAF-AC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
27/07/1993 |
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Data da última atualização: |
07/10/2004 |
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Autoria: |
WANG, S. R.; WANG, G. M.; QUEIROZ, E. F.; MESQUITA, C. M. |
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Título: |
Research on drought resistance and irrigation of soybeans in Parana, Brazil. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
In: CONFERENCE ON IRRIGATED SOYBEAN PRODUCTION IN ARID IN AND SEMI-ARID REGIONS, 1979, Cairo. Proceedings... Urbana-Champaign: INTSOY/University of Illinois, 1981. |
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Páginas: |
p.92-96. |
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Série: |
(INTSOY. Series, 20). |
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Idioma: |
Inglês |
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Notas: |
Ver trabalho preliminar no PC 3730. |
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Conteúdo: |
The capacity of the soybean plant to survive wilting is an important factor in drought resistance. Drought resistance in soybeans was characterized according to physiological parameters. The degree of resistance by soybean plants to water loss was determined, ranging from 40.7 to52.3 percent in the soybean cultivars tested. The stomatal behavior inresponse to water sterss was abserved. The effect of applying abscisicacid to prevent water loss was also studied. The effect of irrigation on soybean production in the field was investigated. Irrigation increased the: plant height; leaf area; dry weight of leaves roots, and stems; length of primary root; and number of leaves. Increased leaf water potential contributed to plant growth throgh greater turgidity and also minimized the effect of water stress in reducing photosyntesis. The increase in the number of leaves (17.8 percent) was less than that in leaf area (53.5 percent). Irrigated soybeans developed larger leaves, mainly in the upper part of the plant. This was confirmed by a greater dry weight for the leaves (49.7 percent). The effect of irrigationwas more pronounced on the growth of aerial parts (49.4 percent) than on roots (36.5 percent). The increase in production by irrigation was 123 kilograms per hectare. That value is not very high, possibly because there was no water sterss on the crop at the pod-filling stage in this experiment. |
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Palavras-Chave: |
Brasil; Drought resistance; Parana; Soybean. |
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Thesagro: |
Irrigação; Resistência a Seca; Soja. |
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Thesaurus NAL: |
Brazil; irrigation. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02319naa a2200301 a 4500
001 1455384
005 2004-10-07
008 1981 bl uuuu u00u1 u #d
100 1 $aWANG, S. R.
245 $aResearch on drought resistance and irrigation of soybeans in Parana, Brazil.
260 $c1981
300 $ap.92-96.
490 $a(INTSOY. Series, 20).
500 $aVer trabalho preliminar no PC 3730.
520 $aThe capacity of the soybean plant to survive wilting is an important factor in drought resistance. Drought resistance in soybeans was characterized according to physiological parameters. The degree of resistance by soybean plants to water loss was determined, ranging from 40.7 to52.3 percent in the soybean cultivars tested. The stomatal behavior inresponse to water sterss was abserved. The effect of applying abscisicacid to prevent water loss was also studied. The effect of irrigation on soybean production in the field was investigated. Irrigation increased the: plant height; leaf area; dry weight of leaves roots, and stems; length of primary root; and number of leaves. Increased leaf water potential contributed to plant growth throgh greater turgidity and also minimized the effect of water stress in reducing photosyntesis. The increase in the number of leaves (17.8 percent) was less than that in leaf area (53.5 percent). Irrigated soybeans developed larger leaves, mainly in the upper part of the plant. This was confirmed by a greater dry weight for the leaves (49.7 percent). The effect of irrigationwas more pronounced on the growth of aerial parts (49.4 percent) than on roots (36.5 percent). The increase in production by irrigation was 123 kilograms per hectare. That value is not very high, possibly because there was no water sterss on the crop at the pod-filling stage in this experiment.
650 $aBrazil
650 $airrigation
650 $aIrrigação
650 $aResistência a Seca
650 $aSoja
653 $aBrasil
653 $aDrought resistance
653 $aParana
653 $aSoybean
700 1 $aWANG, G. M.
700 1 $aQUEIROZ, E. F.
700 1 $aMESQUITA, C. M.
773 $tIn: CONFERENCE ON IRRIGATED SOYBEAN PRODUCTION IN ARID IN AND SEMI-ARID REGIONS, 1979, Cairo. Proceedings... Urbana-Champaign: INTSOY/University of Illinois, 1981.
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Embrapa Soja (CNPSO) |
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