03611nam a2200601 a 450000100080000000500110000800800410001910000130006024501090007326002800018252017030046265000230216565000110218865000190219965000170221865000190223565000140225465000240226865000160229265000200230865000190232865000200234765000160236765000250238365000350240865000200244365000150246365000240247865000250250265300160252765300150254365300320255865300230259065300210261365300160263465300190265065300220266965300280269165300320271965300290275165300100278070000250279070000180281570000190283370000170285270000210286970000200289070000230291070000180293370000210295170000180297270000190299021437282022-06-03       2021    bl uuuu     u00u1 u    #d1 aJANK, L.  aBRS Quênia and BRS Tamanibnew Panicum maximum Jacq. hybrid cultivars in Brazil.h[electronic resource]  aIn: INTERNATIONAL GRASSLAND CONGRESS, 24., INTERNATIONAL RANGELAND CONGRESS, 11., 2020, Kenya. Sustainable use of grassland and rangeland resources for improved livelihoods. Proceedings... Kenya: Kenya Agricultural and Livestock Research Organization, 2021. p. 218-222.c2021  aSince 1982, Embrapa Beef Cattle in Campo Grande, MS, Brazil develops a Panicum maximum Jacq. breeding program based on teh germplasm collected abd assembled by IRD (Institute de Recherche pour le Developpment) and received through a cooperation-agreement with IRD. The germoplasm was evaluated and four cultivars were released directly from the germplasm: cultivars Tanzânia, Mombaça and BRS Zuri. Breeding began in 1990 and involved crosses between sexual plants and selected apomictic accessions. The program consists of evaluation followed by selection of hybrids in plots with replications, evaluation of the selected hybrids in national network experiments in diverse regions and then evaluation of the few selected hybrids under grazing. Hybrids are also evaluated for disease and insect resistances and abiotic stresses. Seeds are multiplied between each evaluation phase. The whole process takes from 10 to 20 years for the release of superior cultivars. Recently, Embrapa released two hybrid cultivars. BRS Tamani, a short, very leafy and high-tillering cultivar, and BRS Quênia, a medium height, very leafy productive cultivar. Both cultivars are recommended for medium to high fertility light soils, corrected for soil nutrients, and for rotationally grazed management. BRS Tamani, because of its short stature and quality is well indicated for cattle weaning. Both cultivars are tolerant to all the spittlebugs present in Brazil. They are not suited for waterlogged soils. Compared to the traditional cultivars in Brazil, these two cultivars showed improved digestibility and crude protein and greater animal daily gains and BRS Quênia also provided higher liveweight gain per area.  aDisease resistance  aForage  aForage grasses  aForage yield  aGenetic traits  aGermplasm  aMegathyrsus maximus  aNew variety  aPest resistance  aPlant breeding  aCapim Colonião  aGermoplasma  aGramínea Forrageira  aMelhoramento Genético Vegetal  aPanicum Maximum  aRendimento  aSeleção Genética  aVariedade Resistente  aBRS Quênia  aBRS Tamani  aCaracterísticas genéticas  aCattle performance  aFitomejoramiento  aGuineagrass  aNueva variedad  aPastos forrajeros  aRendimiento del forraje  aResistencia a la enfermedad  aResistencia a las plagas  aYield1 aANDRADE, C. M. S. de1 aMACIEL, G. A.1 aBARBOSA, R. A.1 aBRAGA, G. J.1 aMACEDO, M. C. M.1 aVALÉRIO, J. R.1 aVERZIGNASSI, J. R.1 aZIMMER, A. H.1 aFERNANDES, C. D.1 aSANTOS, M. F.1 aSIMEÃO, R. M.