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	Provedor de dados Biol. Res. (2) R. Bras. Zootec. (1) Autor BUYUKKARTAL,H. NURHAN BAKAR (1) CAMPOS-DE QUIROZ,HUGO A (1) CARRILLO,JUAN C (1) Confortin,Anna Carolina Cerato (1) Glienke,Carine Lisete (1) Moraes,Andréia Barros de (1) OJEDA,VERÓNICA A (1) ORTEGA,FERNANDO M (1) Quadros,Fernando Luiz Ferreira de (1) Rocha,Marta Gomes da (1) Rossi,Guilherme Ebling (1) Mais... Palavra-chave Trifolium pratense L (3) Egg apparatus (1) Ertilisation (1) In vitro culture (1) Intermittent grazing (1) Leaf lifespan (1) Marked tillers (1) Meristem culture (1) Red clover (1) Sheep (1) Mais... Tipo do documento Journal article (2) Info:eu-repo/semantics/article (1) Ano 2010 (1) 2009 (1) 2004 (1) País Chile (2) Brazil (1) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Structural and morphogenical characteristics of black oats and Italian ryegrass on pasture submitted to two grazing intensities R. Bras. Zootec. Confortin,Anna Carolina Cerato; Rocha,Marta Gomes da; Quadros,Fernando Luiz Ferreira de; Glienke,Carine Lisete; Rossi,Guilherme Ebling; Moraes,Andréia Barros de. Morphogenical and structural characteristics of black oats (Avena strigosa Schreb.) and Italian ryegrass (Lolium multiflorum Lam.) on pastures managed under two grazing intensities were quantified by using marked tiller technique. The expected intensities of disappearance of forage mass initial value were 35% (low) and 65% (high). Experimental animals were sheep and interval among grazing was determined through 300 degree-day thermal sum. The experimental design was completely randomized with two grazing intensities and two replicates. Leaf blades of oats and ryegrass were removed at an average proportion of 57.5% of their initial length for both grazing intensities. Among the morphogenical characteristics of oats, only elongation rate of defoliate leaf... Tipo: Info:eu-repo/semantics/article Palavras-chave: Intermittent grazing; Leaf lifespan; Marked tillers; Sheep; Trifolium pratense L. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001100007 Optimization of a protocol for direct organogenesis of red clover (Trifolium pratense L.) meristems for breeding purposes Biol. Res. CARRILLO,JUAN C; OJEDA,VERÓNICA A; CAMPOS-DE QUIROZ,HUGO A; ORTEGA,FERNANDO M. A series of experiments were carried out in order to optimize a protocol for the direct organogenesis of Chilean red clover germplasm. A range of cultivars were used to analyze the effect of explant source (crown or stem meristems of vegetative plants), culture media and plant growth regulators. Our findings showed that stem meristems were easier to obtain, presented lower levels of contamination and a better development than crown meristems. The L2 medium showed better results than B5 and MS media for the cultivars and experimental lines studied. L2 medium supplemented with 0.003 mg/l of 4-amino-3,5,6-trichloropicolinic acid and 1.0 mg/l of 6-benzylaminopurine gave consistently better results and will be applied in our breeding program to propagate,... Tipo: Journal article Palavras-chave: In vitro culture; Meristem culture; Red clover; Trifolium pratense L. Ano: 2004 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602004000100005 Ultrastructural changes of the egg apparatus associated with fertilisation of natural tetraploid Trifolium pratense L. (Fabaceae) Biol. Res. BUYUKKARTAL,H. NURHAN BAKAR. The aim of this study is to describe the ultrastructural changes of the egg apparatus associated with fertilisation of the natural tetraploid Trifolium pratense. The pollen tube enters one of the synergids through the filliform apparatus from the micropyle. Before the entry of the pollen tube into the embryo sac, one of the synergids begins to degenerate, as indicated by increased electron density and a loss of volume. This cell serves as the site of entry for the pollen tube. Following fertilization, the vacuolar organisation in the zygote changes; in addition to the large micropylar vacuole, there are several small vacuoles of varying size. Ribosomal concentration increases significantly after fertilisation. In T. pratense, ultrastructural changes... Tipo: Journal article Palavras-chave: Egg apparatus; Ertilisation; Trifolium pratense L. Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602009000100003 Registros recuperados: 3 Primeira ... 1 ... Última

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