Author:
Demarchi João José de Abreu Assumpção,Giacomini Alessandra Aparecida,Mattos Waldssimiler Teixeira de,Gerdes Luciana,Batista Karina,Gimenes Flávia Maria de Andrade,Barbosa Cristina Maria Pacheco
Abstract
Ergot is a fungal disease and causes reductions in seed productivity and quality. We aimed to identify promising genotypes of brachiaria evaluating: (1) seed production potential (number of tillers, racemes per inflorescence, spikelets per raceme, raceme length, weight and number of seeds, and germination) and (2) resistance of seeds to Ergot (infected tillers, infected seeds). Five genotypes of Brachiaria grasses, four non-natural hybrids named BH1619, BH1810, BH1516 and Mavuno Palisadegrass (Urochloa brizantha x Urochloa ruziziensis), and Marandu Palisadegrass (U. brizantha Hoechst cv. Marandu) were evaluated. The BH1619 hybrid, despite the high weight of seeds, produced less viable, pure seeds. The hybrid BH1516 had a lower percentage of flowered tillers (42%) and seeds infected with ergot (8%). Marandu Palisadegrass had a higher percentage of infected tillers (95%) and infected seeds (38%). The hybrid BH1516 was the most resistant to ergot, followed by Mavuno Palisadegras sand BH1619. Among all materials, Mavuno Palisadegrass and BH1516 have a higher potential for seed production due to the higher percentage of flowered tillers and production of pure seeds with high germination capacity. The BH1516 hybrid was resistant to ergot, making it a better choice for use in infected areas used for seed or forage production.
Publisher
Universidade Estadual de Maringa
Subject
Animal Science and Zoology,Food Science
Reference29 articles.
1. Adamowski, E. V., Pagliarini, M. S., & Do Valle, C. B. (2008). Meiotic behaviour in three interespecific three-way hybrids between Brachiaria ruziziensis and B. brizantha (Poaceae: Paniceae). Journal of Genetics, 87(1), 33-38. DOI: https://doi.org/10.1007/s12041-008-0005-7
2. Alderman, S. C. (1993). Aerobiology of Claviceps purpurea in Kentucky bluegrass. Plant Disease, 77(1), 1045-1049. DOI: https://doi.org/10.1094/pd-77-1045
3. Brasil. Ministério da Agricultura, Pecuária e Abastecimento. (2009). Regras para análise de sementes. Brasília, DF: Mapa/ACS.
4. Carámbula, M. (1981). Producción de semillas de plantas forrajeras. Montevideo, UY: Hemisferio Sur.
5. Chaves, Z. M., Gomes, E. A., Marriel, I. E., & Pfenning, L. H. (2004). Morphological and molecular characterization of Claviceps isolates from Sorghum bicolor, Brachiaria brizantha, B. decumbens and Panicum maximum in Brazil. Fitopatologia Brasileira, 29(supl), 252.
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