Resumo em anais de congresso (CENARGEN) https://www.alice.cnptia.embrapa.br/alice/handle/item/297 2026-07-03T01:35:02Z 2026-07-03T01:35:02Z TORTORELLA, R. D. TEIXEIRA, H. C. A. MODESTO, M. R NEVES, J. P. RAMOS, A. F. https://www.alice.cnptia.embrapa.br/alice/handle/doc/1187757 2026-06-28T12:36:38Z 2013-01-01T00:00:00Z

Título: Effect of eCG on ovarian function of Curraleiro Pé-Duro cows submitted to a FTAI protocol. Autoria: TORTORELLA, R. D.; TEIXEIRA, H. C. A.; MODESTO, M. R; NEVES, J. P.; RAMOS, A. F. Conteúdo: The aim of this study was to determine the effect of equine chorionic gonadotropin (eCG) on follicular dynamics in a FTAI protocol. Twelve single cows with a mean body condition score (BCS) of 3 (1-5) were maintained in grazing conditions (Brachiaria decumbens) with ad libitum water and mineral supplementation.

2013-01-01T00:00:00Z BRASIL, O. O. MOREIRA, N. H. SANTOS JÚNIOR, G. SILVA, B. D. M. RAMOS, A. F. https://www.alice.cnptia.embrapa.br/alice/handle/doc/1187773 2026-06-28T12:36:54Z 2013-01-01T00:00:00Z

Título: Different times of exogenous progesterone exposure associated or not with GnRH agonist on embryo production in ewes. Autoria: BRASIL, O. O.; MOREIRA, N. H.; SANTOS JÚNIOR, G.; SILVA, B. D. M.; RAMOS, A. F. Conteúdo: This study aimed to evaluate the effect of exogenous progesterone time exposure during supertimulation, with or without the addition of GnRH agonist on embryo yields in Santa Inês ewes. Forty-eight embryo donors were synchronized with intravaginal progesterone device (CIDR).

2013-01-01T00:00:00Z BERTIOLI, D. J. VIDIGAL, B. BERTIOLI, S. C. de M. L. FROENICKE, L. BEITEL, C. NIELEN, S. RATNAPARKHE, M. BRASILEIRO, A. C. M. GUIMARAES, P. M. SCHWARZACHER, T. MICHELMORE, R. PATERSON, A. H. HESLOP- HARISON, P. ARAUJO, A. C. G. de https://www.alice.cnptia.embrapa.br/alice/handle/doc/1187392 2026-06-14T17:54:45Z 2012-01-01T00:00:00Z

Título: The genomics of peanut and its wild relatives. Autoria: BERTIOLI, D. J.; VIDIGAL, B.; BERTIOLI, S. C. de M. L.; FROENICKE, L.; BEITEL, C.; NIELEN, S.; RATNAPARKHE, M.; BRASILEIRO, A. C. M.; GUIMARAES, P. M.; SCHWARZACHER, T.; MICHELMORE, R.; PATERSON, A. H.; HESLOP- HARISON, P.; ARAUJO, A. C. G. de Conteúdo: Cultivated peanut (A. hypogaea L. is a very important tropical oilseed, valued both for subsistence and as a cash crop. It is an allotetraploid of recent origin with an AB type genome (2n = 4x = 40) and has very low DNA polymorphism, a characteristic that has hampered genetic studies. The two sub-genomes diverged from a common ancestor about three and a half million years ago, more recently than the subgenomes of cotton or soya. The genome of peanut is estimated at about 2.8 Gb (only slightly smaller than the human genome) and has a high repetitive DNA content. During meiosis, peanut chromosomes pairing is almost entirely bivalent, an indication of genetic divergence of the A and B chromosomes. A significant divergence is also indicated by in situ hybridization analyses, which show that the repetitive contents of the A and B genomes are substantially different. Interestingly, evidence regarding the low copy fraction of the genome is converse: strong colinearity is observed between the A and B genome genetic maps, and indeed in many genome regions, gene order appears to have changed little over the last 55 million years. These diverging lines of evidence point to an intriguing question in[ the evolution of genome structure: how can the evolutionary flux of the structurally predominant repetitive DNA be reconciled with evolutionary conservation in low copy number DNA? Analysis of genomic sequences from the A and B genomes indicated that a large proportion of the sequence space is accounted for by relatively few transposons that have been active since the evolutionary divergence of the two subgenomes. The activity of these transposons has been a very significant driver of the erosion of A-B genome sequence similarity. Notably, this erosion is not evenly distributed; it is concentrated in intergenic regions.

2012-01-01T00:00:00Z VALLS, J. F. M. https://www.alice.cnptia.embrapa.br/alice/handle/doc/1187395 2026-06-14T17:54:47Z 2012-01-01T00:00:00Z

Título: Integrated conservation and sustainable use of regional crop wild relatives. Autoria: VALLS, J. F. M. Conteúdo: South America includes some mega-diverse countries, but genetic resources locally used for food and agriculture are mostly of exotic origin. Exclusively exotic crops, with no local germplasm, sometimes are key elements behind successful agribusiness. The local importance of coffee, soybeans, sugar-cane, as well as of species of Citrus and Eucalyptus illustrates the strong dependence on exotic germplasm, with the resulting vulnerability. However, the region also includes plant genetic resources of global importance, gathering diverse wild relatives of crops. Breeding programs of exotic crops such as rice, barley, pearl millet or finger millet could benefit from the addition of local congeneric wild species. In parallel, the breeding of American crops such as maize or lima beans may benefit from the addition of germplasm of local landraces, derived from remote introduction of such crops in South America, from their areas of origin in Mexico and Central America. But the greatest impact of the regional plant genetic resources refers to traditional South American crops, such as pineapple, peppers, and groundnut, of which the area is rich in wild relatives. Three crops of Brazilian origin, cassava, cashew, and rubber-tree, enrich this group, of which most wild relatives occur in Brazil, many of them being endemic. Besides typical wild relatives of crop plants, some species native to Brazil and adjacent countries have shown a potential to become commercial crops. This applies to many native forage plants, fruit trees, and palms. In the last three decades, some elite wild plants, Arachis pintoi and Stylosanthes seabrana, both exclusive to Brazil, confirmed this potential, reaching the World market. Information will be presented on what is being done, and still needs to be accomplished, towards the conservation of such crop wild relatives, both ex situ and in situ, especially at a time of strong modifications in the land use systems and practices in South America, while facing threats of climate change. Detailed information on three regional crop genepools will follow, stressing the growing amount of taxonomic and genetic information piled up on the groundnut wild relatives, on the struggle to conserve the wild Manihot species, when their preferred biome, the Cerrado, is under drastic agricultural impact, and on how much diversity is being constantly unveiled on South American species of Capsicum, and how this knowledge relates to agronomic advances.

2012-01-01T00:00:00Z