02959naa a2200385 a 450000100080000000500110000800800410001902400330006010000180009324501510011126000090026250004350027152013590070665000170206565300270208265300230210965300240213265300230215665300170217965300180219665300180221465300130223265300270224565300170227270000190228970000210230870000180232970000190234770000170236670000170238370000150240070000240241570000160243977301180245510619692021-04-13       2021    bl uuuu     u00u1 u    #d7 a10.17138/TGFT(9)138-1432DOI1 aSARAVIA, K.M.  aHybrids of Paspalum plicatulum × P. guenoarumbSelection for forage yield and cold tolerance in a subtropical environment.h[electronic resource]  c2021  aArticle history: Received for publication 6 March 2019; accepted 15 December 2020; published 31 January 2021. Acknowledgments: We acknowledge the financial support from SULPASTO, EMBRAPA - Pecuária Sul and CAPES to enable the conduct of this research. We also thank the IBONECONICET, Facultad de Ciencias Agrarias, Universidad Nacional del Nordeste, especially Camilo Luiz Quarín, for the technical assistance in hybridizations.  aSelection of improved genotypes is important for pasture-based feeding systems in subtropical regions. Our goal was to identify hybrids of Paspalum with enhanced forage yield and cold tolerance across 2 sites [Bagé and Eldorado do Sul (ES)], in Rio Grande do Sul, Brazil. We evaluated 19 P. plicatulum × P. guenoarum hybrids, P. plicatulum genotype 4PT, P. guenoarum cultivars Azulão and Baio and, as Control, Megathyrsus maximus cv. Aruana. At both sites, the experimental design was a completely randomized block with 4 replications. Total dry mass (total-DM), leaf-DM and cold tolerance (ColdT) were recorded. At Bagé, hybrid 102069 produced higher total-DM and leaf-DM than the progenitors and cv. Aruana, while at ES, hybrids 102069 and 10308 produced higher total-DM than 4PT, Azulão and Aruana; hybrid 102069 had higher leaf-DM. At Bagé, 16 hybrids displayed ColdT similar to their progenitors and higher than Aruana, while at ES, 12 hybrids showed ColdT similar to Azulão and Baio and higher than 4PT and Aruana. This study demonstrated that hybrids of Paspalum with superior forage yield to their progenitors and Aruana, and hybrids with higher ColdT than 4PT and Aruana are in existence. The hybridization technique shows potential for producing alternative genotypes with higher forage yield and ColdT for sowing in subtropical regions.  aFORESTACIÓN  aADAPTACIÓN CLIMÁTICA  aBIOMASS PRODUCTION  aGENETIC VARIABILITY  aGRAMÍNEAS NATIVAS  aHIBRIDACIÓN  aHYBRIDIZATION  aNATIE GRASSES  aPASTURAS  aPRODUCCIÓN DE BIOMASA  aVARIABILIDAD1 aDALL'AGNOL, M.1 aDA MOTTA, E.A.M.1 aPEREIRA, E.A.1 aDE SOUZA, C.H.1 aSIMINONI, C.1 aWEILER, R.L.1 aKOPP, M.M.1 aSCHNEIDER-CANNY, R.1 aBARBOSA, M.  tTropical Grasslands-Forrajes Tropicales, 2021, Vol. 9 (1):138?143. Doi: http://dx.doi.org/10.17138/TGFT(9)138-143