Consulta: subjectFacets:"Germplasm bank"
Registros recuperados: 28
Data/hora: 05/06/2024 00:59:12

MODELING OF THE KINETICS OF CRYOGENIC FREEZING OF LIMA BEAN SEEDS AS A FUNCTION OF INITIAL WATER CONTENT
Provedor de dados: 70
Autores: Luciano,Karina M da F.; Mata,Mario E. R. M. Cavalcanti; Fortes,Mauri; Duarte,Maria E. M.
ABSTRACT Cryopreservation is a technique used to preserve genetic material at ultra-low temperatures in cryogenic germplasm banks. In order to enable the cryopreservation of a seed, it is necessary to study its appropriate freezing temperature and its water content, because seeds reach maximum physiological quality with high water contents, and they tolerate drying when they are orthodox seeds, but they may not tolerate cryopreservation. Therefore, the objective of this study was to analyze the influence of initial water content (50 to 10% wet basis) on the kinetic behavior of the lima bean seed at the temperature of −150 °C, in addition to determining changes in its physiological quality (germination and vigor) when cryopreserved (−150 °C) for 30 days...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus lunatus; Cryogenic; Modeling; Germplasm bank.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000300331

Genetic diversity in natural populations of Jacaranda decurrens Cham. determined using RAPD and AFLP markers
Provedor de dados: 74
Autores: Bertoni,Bianca W.; Telles,Mariana P. de C.; Malosso,Milena G.; Torres,Simone C.Z.; Pereira,José O.; Lourenço,Mirian V.; França,Suzelei de C.; Pereira,Ana M.S.
Jacaranda decurrens (Bignoniaceae) is an endemic species of the Cerrado with validated antitumoral activity. The genetic diversity of six populations of J. decurrens located in the State of São Paulo was determined in this study by using molecular markers for randomly amplified polymorphic DNA (RAPD) and amplified fragment length polymorphism (AFLP). Following optimization of the amplification reaction, 10 selected primers generated 78 reproducible RAPD fragments that were mostly (69.2%) polymorphic. Two hundred and five reproducible AFLP fragments were generated by using four selected primer combinations; 46.3% of these fragments were polymorphic, indicating a considerable level of genetic diversity. Analysis of molecular variance (AMOVA) using these two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bignoniaceae; Carobinha; Cerrado; Germplasm bank; Preservation.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000300025

Development and characterization of polymorphic microsatellite markers for the sweet orange (Citrus sinensis L. Osbeck)
Provedor de dados: 74
Autores: Novelli,Valdenice M.; Cristofani,Mariangela; Souza,Alessandra A.; Machado,Marcos A.
The aims of this study were to develop simple sequence repeat markers (SSRs or microsatellite markers) in citrus and to evaluate the efficiency of these markers for characterization of sweet orange. We developed SSRs from a genomic library of 'Pêra IAC' sweet orange enriched for AG/TC, GT/CA, TCA/AGT and AAC/TTG sequence repeats. We selected 279 sequences from which 171 primer pairs were designed of which 113 with the best banding patterns were selected. Characterization of sweet orange microsatellite loci revealed that AG/TC was the most abundant (69%) microsatellite class isolated, followed by GT/CA (15.9%), TCA/AGT (8%) and AAC/TTG (6.2%). The number of alleles ranged from 1 to 4, with a mean of 2 alleles per locus. Four microsatellite loci developed in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Citrus species; Germplasm bank; Polymorphism; Molecular markers.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000100018

Genetic diversity analysis of common beans based on molecular markers
Provedor de dados: 74
Autores: Gill-Langarica,Homar R.; Muruaga-Martínez,José S.; Vargas-Vázquez,M.L. Patricia; Rosales-Serna,Rigoberto; Mayek-Pérez,Netzahualcoyotl.
A core collection of the common bean (Phaseolus vulgaris L.), representing genetic diversity in the entire Mexican holding, is kept at the INIFAP (Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias, Mexico) Germplasm Bank. After evaluation, the genetic structure of this collection (200 accessions) was compared with that of landraces from the states of Oaxaca, Chiapas and Veracruz (10 genotypes from each), as well as a further 10 cultivars, by means of four amplified fragment length polymorphisms (AFLP) +3/+3 primer combinations and seven simple sequence repeats (SSR) loci, in order to define genetic diversity, variability and mutual relationships. Data underwent cluster (UPGMA) and molecular variance (AMOVA) analyses. AFLP analysis...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris L.; Amplified fragment length polymorphisms (AFLP); Germplasm bank; Genetic relationships; Simple sequence repeats (SSR).
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000400012

Avaliação de acessos do banco de germoplasma de mandioquinha-salsa da Embrapa Hortaliças para resistência a Meloidogyne spp. no campo.
Provedor de dados: 14
Autores: CHARCHAR, J. M.; SANTOS, F. F. dos; MOITA, A. W.
bitstream/CNPH-2009/33235/1/bpd_23.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Mandioquinha-salsa; Batata baroa; Arracacha; Peruvian carrot; Germplasm bank; Resistance; Diseases; Nematodes.; Arracacia Xanthorrhiza; Banco de Germoplasma.; Meloidogyne.
Ano: 2007
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/781364

Conservação de germoplasma de sacaca (Croton cajucara Benth.), uma nova fonte de linalol para a Amazônia Ocidental.
Provedor de dados: 14
Autores: KALIL FILHO, A. N.; LUZ, A. I. R.; SÁ SOBRINHO, A. F. de; WOLTER, E. L. A.; PEREIRA JÚNIOR, O. L.
Visando o melhoramento genetico da sacaca, foi instalado um Banco Ativo de Germoplasma (BAG) na Embrapa Amazonia Ocidental. Estao sendo feitas coletas e multiplicacao vegetativa de acesso de sacaca de diversos locais da Amazonia. O BAG-Sacaca visa nao somente a conservacao do germoplasma, mas o estudo da variabilidade genetica entre acesso, para selecao de genotipos superiores para producao de biomassa (folhas), e com maior potencial de producao de oleos essenciais. Ate o presente, foram coletados 15 acessos. Dentro de procedencias foram detectados dois ecotipos: sacaca branca e roxa ou vermelha. Esta com folhas maiores e de cor verde-escura, parecendo possuir maior teor de oleo. Entretanto, analise preliminar de oleo, sujeito a confirmacao, evidencia a...
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Sacaca; Brasil; Amazonas; Germplasm bank; Oil.; Banco de Germoplasma; Óleo.; Croton cajucara.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/667997

Coleção de Microrganismos Patogênicos a Caprinos e Ovinos - CMPCO.
Provedor de dados: 14
Autores: FACCIOLI-MARTINS, P. Y.; SOUZA, V. de; PINHEIRO, R. R.
Resumo: Esta publicação tem por objetivo descrever a história, a composição da Coleção de trabalho de Microrganismos Patogênicos a Caprinos e Ovinos, e de que forma ela tem conservado, caracterizado, documentado e utilizado seus isolados. A coleção foi criada em 2012 e atualmente é composta por 141 cepas bacterianas e seis cepas virais, pertencentes às espécies Corynebacterium pseudotuberculosis, Staphylococcus aureus e ao gênero Lentivirus. Esses isolados são utilizados para produção de antígenos para imunodiagnósticos, em diagnósticos moleculares e na avaliação de resistência a antimicrobianos e ação de anti-sépticos e antimicrobianos. Participa de projetos das coleções institucionais e de gestão da qualidade. [Collection of Goat and Sheep Pathogenic...
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Caracterização; Germplasm bank; Characterization; Diagnosis; Quality; Pathogenic Microorganisms; Caprino; Ovino; Banco de Germoplasma; Conservação; Resistência Genética; Diagnostico; Qualidade; Sheep diseases; Goat diseases; Germplasm conservation; Conservation banks; Genetic resistance; Small ruminants; Brazil.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1123793

Morphological variability of cashews from the Brazilian Cerrado.
Provedor de dados: 14
Autores: BORDALLO, P. do N.; SOBREIRA JÚNIOR, O. V.; OLIVEIRA, K. G. S.; CASTRO, A. C. R. de.
bitstream/item/34190/1/RE10029.pdf
Tipo: Recomendação Técnica (INFOTECA-E)
Palavras-chave: Morphological variability; Cashew; Brazilian Cerrado; Germplasm bank.
Ano: 2010
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/882079

Recursos geneticos do semi-arido: forrageiras, cucurbitaceas florestais.
Provedor de dados: 14
Autores: SILVA, C. M. M. de S.
Aborda os recursos geneticos das plantas forrageiras, cucurbitaceas e florestais da regiao semi-arida do Brasil. Traz o acerto de dados experimentais tanto na agricultura irrigada quanto na agricultura dependente de chuva.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Cucurbitacea; Regiao semi-arida; Genetic resource; Germplasm bank; Forage plant.; Banco de Germoplasma; Floresta; Planta Forrageira; Recurso Genético.; Forage; Forestry.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/133242

In vitro conservation of Piper aduncum and Piper hispidinervum under slow-growth conditions
Provedor de dados: 86
Autores: Silva,Tatiane Loureiro da; Scherwinski-Pereira,Jonny Everson.
The objective of this work was to evaluate in vitro storage of Piper aduncum and P. hispidinervum under slow-growth conditions. Shoots were stored at low temperatures (10, 20 and 25°C), and the culture medium was supplemented with osmotic agents (sucrose and mannitol - at 1, 2 and 3%) and abiscisic acid - ABA (0, 0.5, 1.0, 2.0 and 3.0 mg L-1). After six-months of storage, shoots were evaluated for survival and regrowth. Low temperature at 20ºC was effective for the in vitro conservation of P. aduncum and P. hispidinervum shoots. In vitro cultures maintained at 20ºC on MS medium showed 100% survival with slow-growth shoots. The presence of mannitol or ABA, in the culture medium, negatively affected shoot growth, which is evidenced by the low rate of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ex situ conservation; Germplasm bank; Micropropagation.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000400007

Variability of ricin content in mature seeds of castor bean
Provedor de dados: 86
Autores: Baldoni,Aisy Botega; Carvalho,Mayara Holanda de; Sousa,Natália Lima; Nóbrega,Márcia Barreto de Medeiros; Milani,Máira; Aragão,Francisco José Lima.
The objective of this work was to evaluate ricin concentration in castor bean seeds (Ricinus communis) of 20 accessions from the Banco de Germoplasma de Mamoneira of the Embrapa Algodão, Campina Grande, PB, Brazil, using the Enzyme Linked Immunosorbent Assay. Significant differences were observed among accessions. BRA 3271 had the highest ricin concentration in seeds (32.18 ng µg-1), and BRS Paraguaçu had the lowest (3.53 ng µg-1). There is the possibility of selecting genotypes with different ricin concentrations, which can be used according on the interest of the breeding programs.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ricinus communis; Endosperm; Germplasm bank; Seed protein.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000700015

Genetic parameters and variability in physic nut accessions during early developmental stages
Provedor de dados: 86
Autores: Laviola,Bruno Galvêas; Rosado,Tatiana Barbosa; Bhering,Leonardo Lopes; Kobayashi,Adilson Kenji; Resende,Marcos Deon Vilela de.
The objective of this work was to estimate the genetic parameters and variability among accessions (half-sib families) of physic nut (Jatropha curcas) during the early stages of development. For this study, 110 accessions in the first year of development of the physic nut germplasm bank, maintained at Embrapa Cerrados, DF, Brazil, were evaluated in situ. The experiment was established in a randomized complete block design, with two replicates and five plants per plot arranged in rows at 4x2 m spacing. Grain yield, total number of branches per plant, plant height, stem diameter, canopy projection on the row, canopy projection between rows, canopy volume, number of days until first flowering and height of the first inflorescence were evaluated. Estimates of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Jatropha curcas; Germplasm bank; Plant breeding.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2010001000010

Resistance to Fusarium dry root rot disease in cassava accessions
Provedor de dados: 86
Autores: Oliveira,Saulo Alves Santos de; Hohenfeld,Camila Santiago; Santos,Vanderlei da Silva; Haddad,Fernando; Oliveira,Eder Jorge de.
The objective of this work was to identify sources of resistance to dry root rot induced by Fusarium sp. in cassava accessions. A macroconidial suspension (20 µL) of 11 Fusarium sp. isolates was inoculated in cassava roots, from 353 acessions plus seven commercial varieties. Ten days after inoculation, the total area colonized by the pathogen on the root pulp was evaluated by digital image analysis. Cluster analysis revealed the presence of five groups regarding resistance. The root lesion areas ranged from 18.28 to 1,096.07 mm² for the accessions BGM 1518 and BGM 556, respectively. The genotypes BGM 1042, BGM 1552, BGM 1586, BGM 1598, and BGM 1692 present the best agronomical traits.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manihot esculenta; Bioprospection; Germplasm bank; Screening for resistance.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013001000014

Germplasm characterization of three jabuticaba tree species
Provedor de dados: 94
Autores: Danner,Moeses Andrigo; Citadin,Idemir; Sasso,Simone Aparecida Zolet; Sachet,Marcos Robson; Mazaro,Sérgio Miguel.
The purpose of this study was to characterize cultivated genotypes of three jabuticaba species (Plinia cauliflora, P. trunciflora, and P. jaboticaba). Phenology and fruit growth, as well as leaf, flower and fruit traits were evaluated. Variability in all traits was observed among genotypes of the three jabuticaba species. The trait peduncle size is indicated for differentiation of the three species under study. The leaf and fruit sizes of the genotypes P. trunciflora 3, P. trunciflora 4, P. trunciflora 5 and P. jaboticaba 1 differ from those described in the literature for these species, indicating the formation of ecotypes. Jabuticaba fruit skin contains high anthocyanin and flavonoid concentrations, with potential use in food and pharmaceutical industries.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plinia sp; Germplasm bank; Genetic variability; Fruit quality.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000300019

Nuclear DNA content and chromosome number in Brachiaria spp. genotypes
Provedor de dados: 124
Autores: Timbó,Ana Luiza de Oliveira; Pereira,Roselaine Cristina; Souza Sobrinho,Fausto; Davide,Lisete Chamma.
Breeding programs for Brachiaria spp. use both intraspecies and interspecies crosses between sexual and apomictic plants in order to obtain new cultivars with the desired characteristics. As there are different ploidy levels both within and between species of this genus, it becomes necessary to evaluate the genotypes used in breeding programs, as a guide to breeders when adopting crossing strategies. In this work, DNA content and chromosome number were determined in order to characterise ploidy levels in Brachiaria spp. genotypes. In the analysis of 15 genotypes, DNA content varied with the ploidy levels (2x, 3x and 4x), and between species and/or taxon. The average DNA content was 1.74 pg (2x) in B. ruziziensis, 3.74 pg (4x) in B. decumbens and 3.52 pg...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Germplasm bank; Cytogenetics; Flow cytometry; Forage.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902014000100008

Genetic variability in natural populations of Zeyheria montana mart. from the Brazilian Cerrado
Provedor de dados: 63
Autores: Bertoni,Bianca Waléria; Astolfi Filho,Spartaco; Martins,Ernani Ronie; Damião Filho,Carlos Ferreira; França,Suzelei de Castro; Pereira,Ana Maria Soares; Telles,Mariana Pires de Campos; Diniz Filho,José Alexandre F.
Zeyheria montana, an endemic species of the Bignoniaceae family from the Brazilian Cerrado's known for its anti-cancer properties, is widely used as imuno stimulant in the popular medicine and its therapeutic activity must be validated by scientific data. The objective of this work was to evaluate the genetic variability of eight plant populations collected within the state of São Paulo, Brazil, via Random Amplification of Polymorphic DNA (RAPD) used as molecular markers. After an optimized protocol for the amplification reaction, nine selected primers generated 105 reproducible bands, indicating up to 60% polymorphism. Analysis of molecular variance (AMOVA) revealed higher genetic variation within populations (84.03%) than among populations (15.97%). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bignoniaceae; Germplasm bank; Bolsa-de-pastor; Conservation.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000400012

Isoenzymatic variability of cassava accessions from different regions in Brazil
Provedor de dados: 63
Autores: Cabral,Betânia Lúcia Rocha; Souza,Joelson Araújo de; Ando,Akihiko; Veasey,Elizabeth Ann; Cardoso,Eloisa Maria Ramos.
Cassava (Manihot esculenta Crantz) belongs to the Euphorbiaceae family, and is widely cultivated in Brazil. The objective of this study was to evaluate the isoenzymatic variability of 200 cassava accessions from the germplasm bank of Embrapa Amazonia Oriental. Seven groups were formed according to their origin: 1-Amazonas, 2-Amapa, 3-Bahia, 4-Para, 5-Rondonia, 6-Various, for accessions with a maximum of three individuals per place of origin, and 7 - Accessions of indefinite origin. The accessions were also evaluated as a whole. For the electrophoretic analyses, samples of young leaves were used in a 12% starch gel. Eight isoenzymatic systems were evaluated: acid phosphatase (ACP), leucine aminopeptidase (LAP), glucose-6-phosphate dehydrogenase (G6PDH),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manihot esculenta; Genetic variability; Germplasm bank; Isozymes.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162002000300017

Automation in accession classification of Brazilian Capsicum germplasm through artificial neural networks
Provedor de dados: 63
Autores: Ferreira,Mariane Gonçalves; Azevedo,Alcinei Mistico; Siman,Luhan Isaac; da Silva,Gustavo Henrique; Carneiro,Clebson dos Santos; Alves,Flávia Maria; Delazari,Fábio Teixeira; da Silva,Derly José Henriques; Nick,Carlos.
ABSTRACT Germplasm classification by species requires specific knowledge on/of the culture of interest. Therefore, efforts aimed at automation of this process are necessary for the efficient management of collections. Automation of germplasm classification through artificial neural networks may be a viable and less laborious strategy. The aims of this study were to verify the classification potential of Capsicum accessions regarding/ the species based on morphological descriptors and artificial neural networks, and to establish the most important descriptors and the best network architecture for this purpose. Five hundred and sixty-four plants from 47 Brazilian Capsicum accessions were evaluated. Neural networks of multilayer perceptron type were used in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Capsicum spp.; Garson’s method; Artificial intelligence; Taxonomy; Germplasm bank.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000300203

Genetic diversity in common bean accessions evaluated by means of morpho-agronomical and RAPD data
Provedor de dados: 63
Autores: Chiorato,Alisson Fernando; Carbonell,Sérgio Augusto Morais; Benchimol,Luciana Lasry; Chiavegato,Marilia Barbosa; Dias,Luiz Antonio dos Santos; Colombo,Carlos Augusto.
Germplasm banks store genotype samples, improved varieties, landraces and wild species, all generically denominated accessions. The importance of characterizing germplasm banks is based on the identification and knowledge of relevant traits for genetic improvement and ex situ germplasm conservation. Thus, the present study had as aim the evaluation of the genetic diversity among 220 accessions of a Brazilian common bean germplasm bank of the "Instituto Agronômico de Campinas" (IAC) by means of 23 morpho-agronomical descriptors and 19 RAPD loci. These accessions correspond to genotypes from the Andean and Middle American gene pool as well as from cultivars derived from common bean improvement programs. The Middle American accessions and the improved...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phaseolus vulgaris; Germplasm bank; Botanical descriptors; Multivariate analyses.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162007000300007

การทดสอบปฏิกิริยาของพันธุ์ข้าวจากธนาคารเชื้อพันธุ์พืชต่อแมลงเพลี้ยกระโดดหลังขาว
Provedor de dados: 106
Autores: Wasana Panpeng; Satit Tayapat; Kasem Soontrajan; Rachot Panpitpate; Parinya Chinnoros; Somsak Thongdeethae.
Tipo: Collection
Palavras-chave: Pest reaction; Germplasm bank; Whitebacked planthopper; Rice; ข้าว; ธนาคารเชื้อพันธุ์พืช; เพลี้ยกระโดดหลังขาว; ปฏิกิริยาของพันธุ์; ความต้านทานต่อแมลง.
Ano: 2006
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5072

การทดสอบปฏิกิริยาของพันธุ์ข้าวจากธนาคารเชื้อพันธุ์พืชต่อแมลงเพลี้ยกระโดดสีน้ำตาล
Provedor de dados: 106
Autores: Satit Tayapat; Wasana Panpeng; Kasem Soontrajan; Rachot Panpitpate; Parinya Chinnoros; Somsak Thongdeethae.
Tipo: Collection
Palavras-chave: Testing for pest reaction; Germplasm bank; Brown planthopper; ข้าว; ปฏิกิริยาของพันธุ์ข้าว; เพลี้ยกระโดดสีน้ำตาล; ธนาคารเชื้อพันธุ์พืช; ความต้านทานต่อแมลงศัตรู; พันธุ์.
Ano: 2006
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5042

ปฏิกิริยาของพันธุ์ข้าวจากธนาคารเชื้อพันธุ์พืชต่อโรคขอบใบแห้ง
Provedor de dados: 106
Autores: Kasem Soontrajan; Somsak Thongdeethae; Wasana Panpeng; Satit Tayapat.
Tipo: Collection
Palavras-chave: Rice; Bacterial leaf blight  disease; BLB; Disease reaction; Germplasm bank; ข้าว; โรคขอบใบแห้ง; ปฏิกิริยาของพันธุ์ข้าว; ธนาคารเชื้อพันธุ์; ความต้านทานต่อโรค.
Ano: 2006
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5043

Screening of sweet sorghum accessions for inhibition of secondary sporulation and saccharide measurements in honeydew of Claviceps africana
Provedor de dados: 102
Autores: Bogo,Amauri; Mantle,Peter G; Harthmann,Oscar E. L.
Certain sweet sorghums (Sorghum bicolor) inhibit the secondary sporulation of Claviceps africana, which occurs on exuded ergot honeydew when the parasite is supplied with excess sucrose, which is then transformed to unique free oligosaccharides fructosyl - mannitol and difructosyl - mannitol with spore germination inhibiting properties. Five accessions (BRA-035726-SUGAR DRIP, BRA-035696-THEIS, BRA-036013-MN-4578, BRA-035947-MN-4418 and CMSXS-633) of sweet sorghum were selected among 50 evaluated. These five accessions failed to support secondary sporulation on the "honeydew" exuded from infected florets. There was a higher concentration (%w/v) of the free oligosaccharides on the honeydew of these accessions when compared to a hybrid male-sterile grain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sorghum bicolor; Germplasm bank; Sugars.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-41582004000100013

Evaluation of tolerance to Phytophthora cinnamomi Rands in avocado ( Persea americana Miller.) germplasm
Provedor de dados: 109
Autores: Rodríguez-Henao,Eberto; Caicedo-Arana,Álvaro; Enriquez-Valencia,Ayda Lilia; Muñoz-Florez,Jaime Eduardo.
Abstract In order to obtain twenty-one evaluated accessions from the Avocado Germplasm Bank of CORPOICA, Palmira Research Station with two pathogenic strains of the oomycete, Phytophthora cinnamomi Rands. The aim of this research was to identify avocado accessions, which used as rootstocks in a cultural control strategy for preventing root rot disease. Disease progression was evaluated using mycelium of the pathogen by cut-stem inoculation. The measurements of symptom progression length and width were carried out and analyzed. In order to obtain the area under the disease progression curve (AUDPC), these data were analyzed. A randomized complete block design (RCBD), with a factorial design of 3 x 21 in-subdivided parcels (2 strains of the pathogen, a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Root rot; Germplasm bank; Landrace cultivars; Hass; Accessions.
Ano: 2017
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122017000100128

Molecular characterization of progenies of bacurizeiro ( Platonia insignis ) from Marajó Island, northeastern Amazon
Provedor de dados: 36
Autores: PONTES,Lígia Cristine Gonçalves; MOURA,Elisa Ferreira; MOURA,Mônika Fecury; RODRIGUES,Simone de Miranda; OLIVEIRA,Maria do Socorro Padilha de; CARVALHO,José Edmar Urano de; THERRIER,Josette.
ABSTRACT The bacurizeiro (Platonia insignis Mart.) is a tree native to the Amazon whose fruit is much used in the gastronomy in the North and Northeast regions of Brazil. Due to its great economic potential for these regions, the species is being conserved in germplasm banks to support genetic breeding programs. The aim of this work was the molecular characterization of P. insignis accessions belonging to the germplasm bank of the Embrapa Eastern Amazon research unit using ISSR (Inter Simple Sequence Repeat) markers. Seventy-eight accessions of P. insignis belonging to 16 progenies were sampled in two different localities on Marajó Island, state of Pará, Brazil. Among the 16 progenies, seven were collected in Soure and nine in Salvaterra. The 78 accessions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Genetic diversity; Germplasm bank; Clusiaceae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400293

Developing an in vitro optimized protocol to sweet potato landraces conservation
Provedor de dados: 1
Autores: Vettorazzi, Renato Gobbi; Carvalho, Virginia Silva; Sudré, Cláudia Pombo; Rodrigues, Rosana.
This study aimed to develop a protocol for the in vitro conservation of 30 accessions of sweet potato collected in the northern region of Rio de Janeiro State, Brazil, aiming to extend the period between subcultures for this species. An in vitro minimal growth experiment was established with accession UENF 1931 in a factorial arrangement consisting of four concentrations of mineral salts in MS medium and four concentrations of sucrose, at two temperatures. The others accessions were grown in medium containing 100% MS salts and 2% sucrose, which was the medium that allowed the in vitro conservation of accession UENF 1931 for a longer time period. For this second experiment, 30 accessions of sweet potato and two temperatures were used. Plant height, number...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 5.01.03.00-8 Ipomoea batatas; Minimal growth; Germplasm bank; Maintenance of diversity; Fitotecnia.
Ano: 2017
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/32700

Identification of sources of resistance to anthracnose stalk rot in maize
Provedor de dados: 65
Autores: Nicoli,Alessandro; Zambolim,Laércio; Costa,Rodrigo Veras da; Guimarães,Lauro José Moreira; Lanza,Fabrício Eustáquio; Silva,Dagma Dionísia da; Cota,Luciano Viana.
ABSTRACT: Adoption of resistant cultivars is the primary measure used to control anthracnose stalk rot. The goal of this study was to identify maize-resistant genotypes to anthracnose stalk rot, which are similar to the hybrid 2B710. Experiments were performed at Embrapa Maize and Sorghum experimental fields in Brazil. The first experimental trial evaluated 234 maize lines as well as two commercials hybrids, BRS1010 (susceptible) and 2B710 (resistant). Artificial inoculations were performed with a strain at the blister (R2) phase, and evaluation of disease severity was performed after 30 days. The second experimental trial evaluated 48 maize lines and hybrids, inoculated with two Colletotrichum graminicola strains. In the first trial, eight resistance...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Germplasm bank; Colletotrichum graminicola.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001101885

Agrometeorological conditions associated with phenological responses of tucumã-do-pará (Astrocaryum vulgare Mart.)
Provedor de dados: 64
Autores: Martorano,Lucieta Guerreiro; Oliveira,Maria do Socorro Padilha de; Mendes,Gleidson Guilherme Caldas; Moraes,José Reinaldo da Silva Cabral de; Pinheiro,Daniel Pereira; Oliveira,Afonso Henrique Moraes.
ABSTRACT Palms are among the class of hyperdominant species in the Amazon region, and for the tucumã palm (Astrocaryum vulgare Mart.) demand of climatic and phenological information in order to support strategic planning and sustainable management of this palm species native to the Amazon basin. The objective of this work was to evaluate agrometeorological conditions associated to phenological responses of tucumã as a species that has high economic potential for fruit pulp production. Meteorological data were collected during the period in which data were also collected for the phenology of the germplasm bank. Sensors were installed to monitor temperature and air relative humidity to where they are observed as phenophases. Analyses were conducted to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Palmaceae; Phenology; Climate; Germplasm bank.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542018000200127