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| Registros recuperados: 101 | |
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| Tovar Pedraza, Juan Manuel. |
| La muerte descendente de varetas injertadas de zapote mamey es el principal problema durante la propagación vegetativa de este frutal en viveros comerciales en Guerrero, México. Lasiodiplodia theobromae, identificado cultural, morfológica y molecularmente, se asoció con este problema en 97 % de los aislamientos obtenidos de varetas necrosadas. Se realizaron pruebas de patogenicidad en varetas injertadas de la selección “El Mexicano”. Las varetas mostraron muerte descendente, caracterizada por secamiento gradual con agrietamiento de la corteza del ápice a la base y crecimiento micelial externo y en la unión del injerto. Picnidios abundantes se observaron en peridermis y cicatrices foliares. El estudio de patogenicidad confirmó a L. theobromae como el... |
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Palavras-chave: Propagación; Vivero; Fungicidas; Lasiodiplodia theobromae; Pouteria sapota; Propagation; Nursery; Fungicides; Maestría; Fitopatología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/89 |
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| Tovar Pedraza, Juan Manuel. |
| La muerte descendente de varetas injertadas de zapote mamey es el principal problema durante la propagación vegetativa de este frutal en viveros comerciales en Guerrero, México. Lasiodiplodia theobromae, identificado cultural, morfológica y molecularmente, se asoció con este problema en 97 % de los aislamientos obtenidos de varetas necrosadas. Se realizaron pruebas de patogenicidad en varetas injertadas de la selección “El Mexicano”. Las varetas mostraron muerte descendente, caracterizada por secamiento gradual con agrietamiento de la corteza del ápice a la base y crecimiento micelial externo y en la unión del injerto. Picnidios abundantes se observaron en peridermis y cicatrices foliares. El estudio de patogenicidad confirmó a L. theobromae como el... |
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Palavras-chave: Propagación; Vivero; Fungicidas; Lasiodiplodia theobromae; Pouteria sapota; Propagation; Nursery; Fungicides; Maestría; Fitopatología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/89 |
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| López Martínez, Myrna Elizabeth. |
| La propagación de plantas es una ocupación fundamental; sin embargo, este progreso hubiera crecido en importancia si de manera simultánea, se dispusiera de métodos para mantener en cultivo las formas mejoradas; situación que propicio la propagación vegetativa controlada. Este trabajo consistió en la propagación de 15 clones de dalia, mediante raíces tuberosas y esquejes, así como también realizar la caracterización de los genotipos, sólo en los caracteres que correspondieran a la fase vegetativa en la que se evaluaron. La investigación se llevo a cabo bajo condiciones de invernadero, en el Colegio de Postgraduados. Se analizó la capacidad de reproducción de las raíces tuberosas, así como de la de brotación en base al número de días desde la siembra hasta... |
| Tipo: Tesis |
Palavras-chave: Propagación; Raíces tuberosas; Esquejes; Maestría; Producción de Semillas; Propagation; Tuber roots; Cuttings. |
| Ano: 2007 |
URL: http://hdl.handle.net/10521/1643 |
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| Seyring,Martina; Ewald,Aloma; Mueller,Anke; Haensch,Klaus-Thomas. |
| In the present study we examined the possibility of propagating different Cyclamen species (C. africanum Boiss. and Reut., C. cilicium Boiss. and Heldr., C. coum Mill., C. hederifolium Ait., C. persicum Mill., C. purpurascens Mill.) including some of their subspecies and cultivars in vitro using explants of adult plants. For this purpose two protocols have been applied to eleven genotypes combined with mostly four explant types (placentas with ovules, leaves, petioles and peduncles). The use of these protocols has given rise to either somatic embryo-like structures and/or adventitious shoots in all genotypes. This way it was possible to propagate each of the examined genotypes in vitro using explants of adult plants in a time less than one year. These... |
| Tipo: Journal article |
Palavras-chave: Propagation; Shoot regeneration; Somatic embryogenesis; Species. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582009000400010 |
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| Haensch,Klaus-Thomas. |
| This long-term study demonstrates for the first time that it is possible to propagate embryogenic cultures in pelargoniums and to subsequently initiate the differentiation of embryos using the cultivar Madame Layal (Pelargonium x domesticum). Propagation of callus was only possible with combinations of 2,4-dichlorophenoxyacetic acid (2,4-D) and 6-benzylaminopurine (BAP), which gave rise to embryos from the primary culture stage on. However, the propagation of cells, as well as the differentiation of embryos, was inhibited by a continuous application of these growth regulators. For this reason, a long period on medium lacking growth regulators was necessary before the differentiation of embryos occurred again. The consequences for improving the propagation... |
| Tipo: Journal article |
Palavras-chave: Auxin; Cytokinin; Propagation; Somatic embryogenesis. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000100007 |
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| Oliveira,Letícia C. de; Costa,Edilson; Cortelassi,Julissandra A. da S.; Rodrigues,Edson T.. |
| This study with beetroot seedlings, cultivar Top Tall Early Wonder, was carried out at the State University of Mato Grosso do Sul (UEMS/Aquidauana), from October to November 2008. Three environments of cultivation were used: greenhouse; nursery with monofilament screen of 50 % of shading; and nursery with aluminized thermal reflective screen of 50% of shading. In these environments, three polystyrene trays of 72, 128 and 200 cells, filled with four substrates, were tested: soil; Plantmax®; coconut fiber and vermiculite. There were no replication environments and then each one was considered an experiment alone. For each environment, it was adopted a completely randomized design in factorial scheme 3x4 (three trays x four substrates), with four... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Beta vulgaris; Protected cultivation; Propagation. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000300001 |
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| Costa,Edilson; Leal,Paulo A. M.; Benett,Cleiton G. S.; Benett,Katiane S. S.; Salamene,Luiz C. P.. |
| The seedlings production is an essential part for vegetables production. Thus, this study aimed to evaluate the environment, the substrates and the containers in the development of tomato seedlings, cv. Santa crus Kada Gigante, in Aquidauana -MS, Brazil region, from October to November, 2008. Polystyrene trays with 72; 128 and 200 cells, filled with four substrates (soil; Plantmax®; coconut fiber and vermiculite) were tested in three protected environments (greenhouse; screened with Sombrite® and screened with Aluminet®). The experimental design was completely randomized, factorial scheme 3x4 (three trays x four substrates), with four replications, being analyzed individual variance analysis and joint analysis for the environments. The environment with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum lycopersicum; Protected cultivation; Propagation. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000500002 |
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| Cuevas,Jaime G; Figueroa,Javier A. |
| The Juan Fernández Islands contain one of the world's most interesting floras. However, their conservation status is fragile due to direct and indirect human activities. With the aim of contributing to the conservation of the native species of these islands, germination trials have been performed under laboratory conditions. We studied the germination patterns and characteristics of 25 taxa of the archipelago, at temperatures between 15°C and 25°C, with 12.5 h. of photoperiod. Thirty-five percent of the studied species germinated immediately (within the first month after sowing), while 50% had a delayed germination. Three species did not germinate. Regarding the germination pattern, nine taxa (53%) germinated synchronously (³ 90% of seeds germinated within... |
| Tipo: Journal article |
Palavras-chave: Conservation Chile endemic island; Propagation. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432007000100007 |
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| Dal Picio,Miriane; Andriolo,Jerônimo Luiz; Jänisch,Djeimi Isabel; Schmitt,Odair José; Lerner,Maíne Alessandra. |
| The main objective of this research was to determine fruit yield of strawberry (Fragaria x ananassa) stock plants in a cropping system after producing runner tips and plug plants. Micropropagated stock plants were planted in a soilless growing system. Runner tips bearing at least one visible root nodule were harvested at 43, 66 and 87 days after planting, rooted and planted as multiplied stock plants for producing plug plants. Treatments consisted of micropropagated stock plants of cultivars INIA Arazá, INIA Guenoa and INIA Yvapitá, planted on October 1st, 2008 (T1); multiplied stock plants planted on November 28th (T2) and on December 21st, 2008 (T3), and on January, 10th, 2009 (T4). On May 22nd, 2009, stock plants were defoliated and plug plants of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fragaria x ananassa; Propagation; Plug plants; Soilless growing system. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362013000300006 |
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| Guimarães,Marcelo de A; Garcia,Manuel Filipe N; Tello,Jean Paulo de J; Lemos Neto,Hozano de S; Lima Neto,Benedito P; Rabelo,Janiquelle da S. |
| ABSTRACT Grafting has been considered an important tool to produce tomato in adverse environments. Therefore, the aim of this study was to develop grafting protocols for tomato on rootstocks of Jilo, Cocona and Jurubeba. The work was carried out in a randomized block design, in a factorial scheme (3x2) + 1 with three grafting methods (slant-cut grafting, cleft grafting and splice grafting), combined with two graft ages and rootstocks (depending on the species), and the control. The rootstocks for tomato (Solanum lycopersicum) cv. Santa Clara were: 1) Jilo (S. gilo) cv. Comprido Grande Rio; 2) Cocona (S. sessiliflorum) and 3) Jurubeba (S. jamaicense). The methods were individually studied and the graft length (GL); chlorophyll ‘a’ and chlorophyll ‘b’ in pre... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum lycopersicum; Cleft grafting; Propagation; Fresh tomato. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362019000200138 |
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| Martins,Cibele C.; Bovi,Marilene L. A.; Nakagawa,João; Godoy Júnior,Gentil. |
| Seeds of jussara palm (Euterpe edulis Mart.) are recalcitrant, presenting low longevity, high sensitivity to dehydration and to low temperatures of storage. Temperature conditions for temporary preservation of those seeds, with and without pulp, were studied. Mature fruits were harvested from 24 plants belonging to the palm collection of the Instituto Agronômico (IAC) located at Ubatuba, São Paulo State, Brazil, and taken in moisture-proof containers to the Universidade Estadual de São Paulo, in Botucatu, São Paulo State. Half of the fruits were shelled and the seeds stored, with and without pulp, in sealed plastic bags (20 µm thick) maintained in chambers with temperatures of 5; 10; 15 and 20-30ºC. Samples for the quality tests were taken at 0; 3; 6; 9... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Euterpe edulis; Conservation; Heart of palm; Propagation; Recalcitrant. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362004000200021 |
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| Viana,Jonathan dos S; Palaretti,Luiz Fabiano; Faria,Rogério T de; Delgado,Yago V; Dalri,Alexandre B; Barbosa,José de A. |
| ABSTRACT Increasing potato yield while saving natural resources is a challenge for all those involved in the potato production chain. A field experiment was carried out in order to evaluate the effect of different levels of fertilization, mass of seed tubers and the water regime on the production of potato cv. Orchestra. We tested fertilization methods (F1= conventional fertilization; F2= fertigation according to the rate of absorption by the crop; F3= fertigation split into 3 applications), seed tuber mass (ST1= <50 g; ST2= >50 g), and water regimes [WR1= 50%; WR2= 100% replacement of crop evapotranspiration (ETc)]. The study was conducted using a split-plot randomized block design, with fertilizers in the plot and seed tuber mass in the subplot,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum tuberosum; Drip irrigation; Nutrition; Propagation. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000200166 |
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| May,André; Bovi,Odair A; Maia,Nilson B; Moraes,Andrea RA de; Pinheiro,Mariane Q. |
| A trial was carried out in Campinas, Brazil, from August 2005 to August 2006, in order to analyze the effect of two propagation methods (seeds and cuttings) on the development of Pfaffia glomerata (Spreng.) Pedersen. The experimental design was a completely randomized block, with five replications, and two methods of plant propagation. Plant height, aerial part dry mass and root dry mass were evaluated. Plants propagated from cuttings showed greater accumulation of dry mass on the aerial part. Root dry mass accumulation curves showed an exponential pattern, and at the end of the experimental period, the average of roots dry mass for both treatments were similar, up to 349,65 g plant-1. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pfaffia glomerata; Brazilian ginseng; Medicinal plant; Propagation. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362008000300016 |
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| Lima,Cristina B; Boaventura,Ana C; Gomes,Marli M. |
| We aimed to establish the period of time required for seedlings formation, as well as to evaluate the effect of substrates and plant growth regulators in cuttings of L. alba. Three experiments were performed, with statistical designs chosen according to each test objectives. Rooting (%), shoot height (cm), longest root length (cm), leaves number, fresh and dry matter masses (g), were analyzed. The absolute rate of shoot and root system growth, together with the relationship between dry mass of roots and shoots were efficient in predicting the period of greatest speed and accumulation of organic matter in plants. The plant growth regulators favored the vegetative performance of seedlings, with better development 30 days after the cuttings containing mineral... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lippia alba; Propagation; IBA; Rooting.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362015000200015 |
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| LIMA, P. C. F.. |
| This paper reports the strategies of the genetic improvement program carried out by EMBRAPA, for the Psosopis species. The results obtained with the introduction of species from different ecological zones in the world are presented, as well as the tecnhiques of asexual propagation to establish a clonal seed orchard. Sixteen species of Prosopis from several provenances were introduced from Peru, Argentina, Chile, Senegal, Pakistan, Mexico, Cape Verde, Paragyay, Honduras and United States of America, from 1984 to 1994. The best species established in term of survival and growth were P. juliflora, P. pallida, P. velutina, P. glandulosa, P. cineraria and P. affinis. Aspects of wood and fodder production and quality of some Prosopis species are also presented. |
| Tipo: Capítulo em livro técnico (INFOTECA-E) |
Palavras-chave: Programa; Propagacao; Mesquite; Genetic; Propagation; Species; Algaroba; Espécie; Genética; Prosopis. |
| Ano: 1998 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132425 |
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| FUKUDA, W. M. G.. |
| Variedade de mandioca e um dos principais componentes para o desenvolvimento do sistema produtivo dessa cultura, alem de constituir uma tecnologia que nao implica em custos adicionais para o produtor. Apesar da mandioca apresentar um alto potencial produtivo, estimado por COCK (1974) em 90 t/ha/ano, a produtividade nacional esta em torno de 12 t/ha. Um dos fatores que tem contribuido para a baixa produtividade desse cultivo no Brasil, e o uso de variedades com baixo potencial produtivo. A demanda por novas variedades de mandioca vem crescendo constantemente, a medida que surgem novas alternativas de uso pelo produto, bem como a expansao de novas fronteiras agricolas para o plantio dessa cultura. Para atender essas demandas, e importante definir-se as... |
| Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) |
Palavras-chave: Genetic; Propagation; Propagacao; Biologie.; Biologia; Manihot Esculenta.; Cassava.; Breeding. |
| Ano: 1995 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/637374 |
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| Registros recuperados: 101 | |
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