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Registros recuperados: 13
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Adaptabilidade e estabilidade de cultivares de milho no nordeste brasileiro. Repositório Alice
CARVALHO, H.W.L. de; LEAL, M. de L. da S.; SANTOS, M.X. dos; CARDOSO, M.J.; MONTEIRO, A.A.T.; TABOSA, J.N..
No ano agrícola de 1997, 21 cultivares de milho foram submetidas a 26 diferentes condições ambientais no Nordeste brasileiro, visando conhecer a estabilidade de produção desses materiais para fins de recomendação na região. Foi utilizado o delineamento experimental em blocos casualizados, com três repetições. Foram detectadas diferenças entre os ambientes, as cultivares e comportamento diferencial das cultivares em face das variações ambientais, na análise de variância conjunta. A produtividade média obtida (4.301 kg/ha) mostra o bom potencial para a produtividade das cultivares avaliadas, e boa aptidão do Nordeste brasileiro para a produção de milho. Todas as cultivares mostraram estabilidade de produção nos ambientes considerados. Os híbridos, de...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Genetica; Genetic stability; Cultivar; Milho; Corn.
Ano: 2000 URL: http://www.alice.cnptia.embrapa.br/handle/doc/102062
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Assessing the genotypic performance of carioca beans through mixed models. Repositório Alice
SOUZA, I. P. de; SANTOS, P. R. dos; NASCIMENTO, M. R.; COSTA, K. D. da S.; LIMA, T. V.; OLIVEIRA, T. R. A. de; COSTA, A. F. da; PEREIRA, H. S.; SILVA, J. W. da.
Using genotypes adapted to different regions is one of the main ways to increase Brazilian bean yield. The aim of the present study was to assess the genotypic performance of Carioca beans through mixed models. Fourteen Carioca bean genotypes were assessed in four locations in Pernambuco State (Arcoverde, Caruaru, Belém de São Francisco and São João counties) in 2015. The experiments followed a completely randomized block design, with three repetitions. Genetic parameters were estimated according to the REML/BLUP methodology, whereas genotype selection was based on the harmonic mean of relative performance of genetic values method (MHPRVG). The mean genotype heritability had moderate magnitude, high selective accuracy, besides allowing selection of...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: REML/BLUP; Feijão; Phaseolus Vulgaris; Melhoramento Genético Vegetal; Genótipo; Produtividade; Beans; Genetic stability; Genotype.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1093307
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Dynamics of 45S rDNA sites in the cell cycle: fragile sites and chromosomal stability in Lolium and Festuca. Repositório Alice
ROCHA, L. C.; SILVA, G. A.; BUSTAMANTE, F. O.; SILVEIRA, R. A. D.; MITTELMANN, A.; TECHIO, V. H..
Abstract Analyses carried out with fluorescence in situ hybridization (FISH) in C-metaphases of the Lolium-Festuca complex have shown the occurrence of spontaneous fragile sites (FSs) in 45S rDNA regions. FSs are expressed as gaps but they do not result in breaks or chromosomal fragments in these species. These gaps have high DNA condensation observed as thin chromatin fibers that connect the apparent segments of the fragile chromosome, allowing for genomic stability. Assessing the behavior of these regions in the cell cycle of Lolium and Festuca species may lead to a better understanding of the dynamics that preserve stability during cell division. Furthermore, it is interesting to track the dynamics of chromosomes bearing 45S rDNA sites in the cell cycle...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Genetic stability; Chromosomal fragments; Fragile site; Gene activity-dependent decondensation; Chromatin fiber; High decondensation.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1085223
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Evaluation of cassava plants generated by somatic embryogenesis at different stages of development using molecular markers Electron. J. Biotechnol.
Osorio,Mayra; Gámez,Elizabeth; Molina,Sandy; Infante,Diógenes.
Background: Cassava (Manihot esculenta Crantz) is a crop that is high in carbohydrates in the roots and in protein in the leaves, important for both human consumption and animal feed, and also has a significant industrial use for its starches. In this study we evaluated the genetic variability with molecular markers in different stages in micropropagated plants from somatic embryos of Venezuelan native clone 56. Results: Three markers were used: ISTR, AFLP and SSR, finding that ISTR showed the highest polymorphism among individuals tested. With AFLP a high similarity between the evaluated individuals was observed and with SSR total monomorphism was seen. Using cluster analysis it was found that individuals from an embryo labeled as fasciated at the...
Tipo: Journal article Palavras-chave: AFLP; Genetic stability; ISTR; SSR; UPGMA.
Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000400003
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Genetic and resistance stability to Black Sigatoka disease during micropopagation of Musa CIEN BTA-03 somaclonal variant Phyton
Giménez,C; de García,E; Haddad,O.
Evaluation of clonal micropropagation and phenotype stability of elite somaclones are critical steps for development of new varieties. In the present work somaclon variant CIEN BTA-03 (resistant to Black Sigatoka), obtained through in vitro process from cultivar Williams (susceptible to Black Sigatoka), was micropropagated via apical shoot culture for five multiplication cycles in 0.5 mg/l of benzyl-aminopurine (BA). To verify the genetic stability of the progeny of this elite material, random amplified polymorphic DNA (RAPD) markers were used. A total of 5,292 monomorphic bands were obtained from the amplification of fifty six DNA samples (extracted from vitroplants randomly selected) with 10 different primer combinations. Non-polymorphic RAPD bands were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Micropropagation; Genetic stability; RAPD; Disease resistance; Youngest leaf spotted (YLS).
Ano: 2008 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572008000100006
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Genetic stability in rice micropropagation Biocell
Medina,R; Faloci,M; Marassi,M.A.; Mroginski,L.A..
An efficient clonal propagation procedure for six rice varieties cultivated in Argentina was developed by using shoot tip cultures, and the genetic stability of the micropropagated plants was verified by isozyme analysis. One week old seedlings obtained on MS medium were sectioned and subcultured on MS medium (0.75% agar) supplemented with different combination and concentrations of cytokinins (BAP and KIN) and auxins (2,4-D and NAA). After four weeks of culture, multiple shoots were obtained. The best response was observed on MS supplemented with BAP 5 mg l-1. Shoot clumps were multiplied in MS liquid medium containing BAP 5 mg l-1. Profuse rooting was obtained after transfer to MS medium lacking growth regulators and with sucrose 8% (w/v). Complete...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Micropropagation; Multiple shoots; Oryza sativa L.; Isozyme; Genetic stability.
Ano: 2004 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452004000100002
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Interação genótipo x ambiente no desempenho produtivo da soja no Paraná. Repositório Alice
CARVALHO, C.G.P. de; ARIAS, C.A.A.; TOLEDO, J.F.F. de; ALMEIDA, L.A. de; KIIHL, R.A. de S.; OLIVEIRA, M.F. de.
Os objetivos deste trabalho foram conhecer o grau de representatividade dos locais no Estado do Paraná, onde são conduzidos os ensaios de avaliação final de produtividade de linhagens de soja no período 1990/2000 e realizar estudo de adaptabilidade e estabilidade das linhagens no ano agrícola 1999/2000. As linhagens testadas pertencem aos grupos de maturação precoce, semiprecoce e médio. Verificaram-se padrões de similaridade de resposta das linhagens dos três grupos de maturação, em alguns locais, em todos ou na maioria dos anos testados. Esses padrões dependeram do grupo de maturação. Contudo, as avaliações em Londrina/Cambé, Campo Mourão, Guarapuava/Mariópolis e Sertaneja foram sempre indicadas. O local Ponta Grossa - 1 foi útil na discriminação de...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Glycine max; Progênie; Adaptação; Estabilidade genética; Métodos de melhoramento; Progeny; Adaptation; Genetic stability; Breeding methods.
Ano: 2002 URL: http://www.alice.cnptia.embrapa.br/handle/doc/107480
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Parámetros genéticos e interacción genotipo x ambiente en el crecimiento de progenies reintroducidas y nativas de Pinus patula. Colegio de Postgraduados
Gómez Martínez, Procoro.
Pinus patula Schiede ex Schltdl. et. Cham., es una especie nativa de México ampliamente utilizada en plantaciones comerciales en diferentes regiones del mundo; la especie ha sido mejorada en el extranjero, y es necesario evaluar el material al ser reintroducido a su país de origen. Se comparó el crecimiento de 36 familias de medios hermanos seleccionadas en Colombia y Sudáfrica, reintroducidas en México (grupo R) y 36 familias de medios hermanos escogidas fenotípicamente en rodales naturales (grupo N), en dos sitios con ambientes contrastantes: Aquixtla, Puebla, a 2,930 m (S1) y Acaxochitlán, Hidalgo, a 2,260 m (S2). Se midió el diámetro normal, la altura total y el volumen del fuste a los siete y ocho años de edad, y la conformación del árbol y el número...
Palavras-chave: Análisis de estabilidad; Correlación genética tipo B; Crecimiento; Ganancia genética; Heredabilidad; IGA; Parámetros genéticos; Pinus patula; Progenies; Reintroducción; Adaptation; Ecovalence; Genetic stability; Genetic gain; Genetic parameters; Growth rate; GEI; Heritability; Progeny test; Type-B genetic correlation; Reintroduction; Forestal; Maestría.
Ano: 2013 URL: http://hdl.handle.net/10521/1892
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Parámetros genéticos en características de crecimiento y densidad de la madera en progenies de Eucalyptus grandis Colegio de Postgraduados
Harrand, Leonel.
Con el fin de determinar la estructura genética de las características de crecimiento y densidad de la madera (evaluada de manera directa y a través de la penetración del Pilodyn) y estimar la respuesta esperada a la selección masal en una población de Eucalyptus grandis formada por familias del NE de Queensland (Australia), se evaluó un ensayo de progenies a los 4.5 y 8.5 años de edad, establecido en tres sitios del NE argentino. Aunque se encontró una amplia variabilidad genética en todas las características evaluadas, las características de crecimiento [diámetro (DAP), altura (HT) y volumen (VOL)] mostraron diferente estructura y grado de control genético con respecto a las otras características [rectitud de fuste (FORM), proporción de corteza (COR) y...
Tipo: Tesis Palavras-chave: Heredabilidad; Correlación genética; Correlación edad-edad; Estabilidad genética; Respuesta a la selección; Selección indirecta; Selección temprana; Densidad de la madera; Pilodyn; Maestría; Forestal; Heritability; Genetic correlation; Age-age correlation; Genetic stability; Response to selection; Indirect selection; Early selection; Wood density.
Ano: 2007 URL: http://hdl.handle.net/10521/1648
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Phenotypic plasticity of upland rice lines cultivated in Minas Gerais State, Brazil. Repositório Alice
INÁCIO, H. B.; BOTELHO, F. B. S.; MOURA, A. M. de; MENDES-RESENDE, M. P.; SANTOS, H. O. dos; CASTRO, A. P. de; REIS, M. de S.; BUSTAMANTE, F. O..
The evaluation of breeding lines for prior recommendation in different environments is a step that requires a high level of investment. This evaluation is extremely important, especially when the objective of breeding is to select lines with high homeostasis, adaptability associated with high yield, and stability. Thus, this paper aimed to study the phenotypic plasticity of thirteen upland rice lines for grain yield in multiple environments of Minas Gerais State, Brazil. The experiments were installed in nine different environments corresponding to the combination of locations and agricultural years. Thirteen elite lines were used, originating from a partnership between UFLA (Federal University of Lavras), Epamig (Agricultural Research Company of Minas...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Arroz; Oryza Sativa; Fenótipo; Melhoramento Genético Vegetal; Produtividade; Grão; Rice; Genetic stability; Genotype-phenotype correlation; Plant breeding; Grains.
Ano: 2018 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1101260
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Rescue of a non-viable accession and rapd analysis of recovered plants of Arachis retusa. Repositório Alice
GAGLIARDI, R.F.; PACHECO, G.P.; OLIVEIRA, C.A.; CARNEIRO, L.A.; VALLS, J.F.M.; VIEIRA, M.L.C.; MANSUR, E..
In vitro regeneration of Arachis retusa was examined for the purpose of germplasm renewal and conservation. Random amplified polymorphic DNA (RAPD) fingerprinting was used to evaluate the genetic stability of plants derived from embryo axes and apical segments. Ten arbitrary decamer primers were screened and five of them were selected. Ninety genomic regions were evaluated, with an average of 18 loci per clone. All amplified segments were monomorphic. The results indicate that recovered plants are genetically stable at the assessed genomic regions and that both regeneration processes are suitable for in vitro germplasm preservation of Arachis species.
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Germplasm conservation; Micropropagation; Molecular characterization; Genetic stability; Conservação de germoplasma; Micropropagação; Caracterização molecular; Estabilidade genética.
Ano: 2004 URL: http://www.alice.cnptia.embrapa.br/handle/doc/110084
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การพัฒนาสายพันธุ์เรณูเป็นหมันโดยวิธีการผสมกลับ Thai Agricultural
Bang-on Thammasamisorn.
Development of new CMS lines by backcrossing was conducted at Suphan Buri Rice Research Center during 2005-2011. The objective was to develop Thai elite breeding lines to be better varieties of CMS lines adapted to the environment in Thailand. The new CMS lines will be used for research project on hybrid rice production. CMS lines from IRRI were used as donor in repeated backcrossing of 6-7 generations to the recurrent parent, Thai elite breeding line. After seven generations of repeated backcrossing two new CMS lines, SPR06186A (IR58025A/7*SPR98015-59-1-2-2-2) and SPR06189A (IR73328A/7*SPR98015-59-1-2-2-2), were developed. These two lines have one hundred percent of pollen sterility and similar agronomic traits to the recurrent parent. SPR06186A has a...
Tipo: PhysicalObject Palavras-chave: Cytoplasmic male sterile; CMS line; Hybrid rice; Backcross; Genetic stability; Varieties; Plant breeding; Growth; Seeds quality; Seed set; Pollen sterility; สายพันธุ์เรณูเป็นหมัน; การผสมกลับ; ข้าวลูกผสม; การผสมพันธุ์ข้าว; การปรับปรุงพันธุ์; ลักษณะประจำพันธุ์; การทดสอบพันธุ์; ระยะเวลาออกดอก; เปอร์เซ็นต์การติดเมล็ด; คุณภาพเมล็ดพันธุ์.
Ano: 2013 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5703
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ข้าวหอมสายพันธุ์ CCS06039-KLG-8-3-5-1 Thai Agricultural
Prakobkit Dangthaisong; Kemporn Petcharaporn; Benjapol Luad-Ngern; Peerapol Ratana; Supaporn Chanbuathong; Kasem Soontrajarn; Kanya Cheaupan; Sunanta Wongpiyachon; Nittaya Ruensuk; Vasana Panpeng; Adul Kridsawadee; Sunanta Mueanpol; Watcharee Sukviwat; Kanchana Klakhaeng; Manika Noi-iam; Bang-on Thammasamisorn; Chalermchat Luechaikham; Amornrat In-man; Pattanasak Chansong; Satit Tayapat; Surin Tritilanon; Prinya Chinnoros; Prachack Lengbumrung; Peera Dungsoongnern; Udompan Promnart; Rueanrudee Khaewchueanchai; Supavinee Suongtoe; Marisa Urasit; Suniyom Taprap; Kingkaw Kunket; Anchalee Prasertsak.
CCS06039-KLG-8-3-5-1 is a non-glutinous, non-photoperiod sensitive and aromatic rice line derived from a cross between PSBRc54 and IR22. The single cross hybridization was made in 2006 at Bang Khen Rice Experiment Station (now Chachoengsao Rice Research. F2 to F5 progenies were selected at Klong Luang Rice Reseach Center during 2007-2008. The line CCS06039-KLG-8-3-5-1 has an erect and moderately strong culm; 110 cm height on transplanting and 105 cm height on germinated seed broadcasting; 117 days maturity on transplanting and 106 days maturity on germinated seed broadcasting. The cooked rice is soft and aromatic similar to Pathum Thani 1, and the amylose content is 16.4 percent. The seed size is larger than Pathum Thani 1. The period of seed...
Tipo: PhysicalObject Palavras-chave: Aromatic rice; Hybrid rice; Non glutinous rice; High yield; Genetic stability; Varieties; Plant breeding; Rice production; Yields; Seeds quality; Cooking quality; Rainfed; ข้าวหอม; สายพันธุ์ลูกผสม; ข้าวเจ้า; ผลผลิตข้าวสูง; การปรับปรุงพันธุ์; ความคงที่ทางพันธุกรรม; ศักยภาพการผลิต; การทดสอบพันธุ์; คุณภาพเมล็ดพันธุ์; คุณภาพหุงต้ม.
Ano: 2013 URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5702
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