11 documents found, page 1 of 2
Observações anatômicas em plantas de Coffea arabica L. obtidas por enraizamento...
Jesus, Adriana Madeira Santos; Carvalho, Samuel Pereira de; Castro, Evaristo Mauro de; Gomes, Carlos NickUma forma para se obter diminuição significativa de tempo e recursos despendidos nos programas de melhoramento de Coffea arabica L. é a clonagem de híbridos F1 por meio de estacas caulinares. Alguns estudos, em diferentes instituições, foram realizados buscando-se definir um método eficiente para esse tipo de clonagem. Com o objetivo de verificar-se a presença de barreiras anatômicas ao enraizamento de estacas ...
Métodos alternativos de estimação de coeficientes de trilha e índices de seleçã...
Carvalho, Samuel Pereira deCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; Informações obtidas de amostras de genótipos de feijão, avaliadas em dois ensaios conduzidos em Viçosa-MG, durante o ano agrícola 1991/92, foram utilizadas para estudo de correlações e ganhos de seleção. Para isso, procedeu-se à estimação de coeficientes de trilha e índices de seleção. Considerando os efeitos adversos da multicolinearidade, quanto à e...
Vegetative propagation of coffee by mini-cutting
Rezende, Tiago Teruel; Carvalho, Samuel Pereira de; Bueno Filho, Júlio Sílvio de Sousa; Honda Filho, Cássio Pereira; Simões, Luana de CássiaThe introduction of methods that allow the cloning of coffee plants can be useful in breeding programs and for the commercial production of seedlings. Among the methods for vegetative propagation, cutting has allowed the cloning of coffee plants. However, one of the obstacles for commercial production is the reduced amount of orthotropic branches produced by the matrix plant. An alternative would be the use of ...
Potential use of anatomical and physiological characteristics in the selection ...
Castanheira, Dalyse Toledo; Rezende, Tiago Teruel; Baliza, Danielle Pereira; Guedes, Janine Magalhães; Carvalho, Samuel Pereira deThe objective was to evaluate the potential use of morphological and physiological characteristics in the selection of coffee progenies. For the anatomical and physiological, were sampled twenty progenies coming from the three types of origins groups of experimental population installed in UFLA. The design was completely randomized with two evaluation periods. The progenies have studied genetic variability has ...
Avaliação da diversidade genética entre acessos de mamoneira (Ricinus communis ...
Rodrigues, Helen Cristina de Arruda [UNESP]; Carvalho, Samuel Pereira de; Carvalho, Alexandre Alves de; Carvalho Filho, José Luiz Sandes deSubmitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T18:59:52Z No. of bitstreams: 1 S0034-737X2010000600012.pdf: 54329 bytes, checksum: a0c88a0d96d7e2999ae95499eecd903d (MD5); Made available in DSpace on 2013-08-22T18:59:52Z (GMT). No. of bitstreams: 1 S0034-737X2010000600012.pdf: 54329 bytes, checksum: a0c88a0d96d7e2999ae95499eecd903d (MD5) Previous issue date: 2010-12-01; Made available ...
Correlações genotípicas, fenotípicas e ambientais entre caracteres de mamoneira
Rodrigues, Helen Cristina de Arruda [UNESP]; Carvalho, Samuel Pereira de; Carvalho, Alexandre Alves de; Santos, Carlos Eduardo Magalhães dosSubmitted by Guilherme Lemeszenski (guilherme@nead.unesp.br) on 2013-08-22T19:03:38Z No. of bitstreams: 1 S1413-70542010000600005.pdf: 51568 bytes, checksum: 1814224caa98fe25f9d10ef8670eb3a3 (MD5); Made available in DSpace on 2013-08-22T19:03:39Z (GMT). No. of bitstreams: 1 S1413-70542010000600005.pdf: 51568 bytes, checksum: 1814224caa98fe25f9d10ef8670eb3a3 (MD5) Previous issue date: 2010-12-01; Made available ...
Development of Coffea arabica L. seedlings obtained from direct somatic embryog...
Rezende, Juliana Costa de; Ferreira, Ester Alice; Pasqual, Moacir; Villa, Fabíola; Botelho, César Elias; Carvalho, Samuel Pereira deThis work aimed to develop embryos and acclimatize seedlings of Coffea arabica L. cv. Rubi produced by direct somatic embryogenesis. For the development of somatic embryos, were evaluated the effect of sucrose (0; 15; 30; 45 and 60 g.L-1) and GA3 (0; 2.5; 5 and 10 mg.L-1). For the development of seedlings, were evaluated the influence of GA3 (0; 2.5; 5; 10 mg.L-¹) and NAA (0; 0.25; 0.5; 1; 2 mg L-¹). ...
Field performance of vegetative and seed propagated plants of coffee (Coffea ar...
Carvalho, Mychelle; Jesus, Adriana Madeira Santos; Carvalho, Samuel Pereira de; Gomes, Carlos Nick; Soares, Ângela MariaCutting is an alternative method for vegetative propagation of Coffea arabica L. hybrids for commercial purpose. However, the use of such method requires the understanding of the plant growth characteristics under filed conditions. Thus, the objective of the present study was to evaluate and compare the vegetative growth and first yield of Coffea arabica cv. Acaiá plants obtained by cuttings and with see...
Efficiency evaluation of water absorbing polymers on after planting coffee plan...
Vale, Geraldo Fernando Rezende do; Carvalho, Samuel Pereira de; Paiva, Leandro CarlosA water absorbent polymer can guarantee plant water supply in regions presenting water deficits. Stockosorb® is an inert acrylic polymer that transforms into a gel when it absorbs water and can later gradually release this water to plants. This research was aimed at studying the effects of the water-holding polymer Stockosorb®, associated or not to organic matter, upon the initial field development of c...
Comparison among rooting systems of Coffea arabica L. plants obtained by cuttin...
Jesus, Adriana Madeira Santos; Carvalho, Samuel Pereira de; Soares, Ângela MariaVegetative propagation or cloning of F1 hybrids represents an economy of time and resources for Coffea arabica L. breeding programs. Nevertheless, not much is known about the rooting system of coffee plants propagated by cuttings. An essay was carried out aiming to evaluate Coffea arabica rooting system of plants obtained by vegetative and seedling propagation. Cuttins of the Acaiá and Rubi cultivar with...