Reaction of Cenchrus accessions to Pyricularia grisea in the semiarid region of Pernambuco
DOI:
https://doi.org/10.24221/jeap.6.4.2021.4689.396-402Keywords:
Magnaporthe grisea, Buffelgrass, Genetic resistanceAbstract
The fungus Pyricularia grisea causes leaf spots on buffel grass (Cenchrus ciliaris). This fungus is a major problem in this forage pastures in Texas, USA and northern Mexico. Although this disease does not present serious problems to buffel grass in the Brazilian semiarid region, the search for germplasm with some level of tolerance to this disease is always important before they cause problems for the crop. The aim of this study was to evaluate the reaction of accessions of the Cenchrus spp. to the P. grisea, in natural infection. Twenty accessions belonging to the Germplasm Bank (BAG) of Cenchrus da Embrapa Semiárido were evaluated, in randomized blocks with three replications and a plot containing 20 plants. The evaluations were carried out in two evaluation cycles in 2019 and 2020, in the rainy season, when the environmental conditions for the development of the disease were favorable. To assess the severity of the disease, a scale of scores ranging from 1 to 4 was used. The average data of the scores per plot were submitted to analysis of variance and the averages were compared by the Scott and Knott test, at 5% significance. There was a significant effect on disease tolerance. Ten accesses received an average score above 3 (CPATSA 83476; CPATSA 79151; CPATSA 79150; CPATSA 79591; CPATSA 90194; CPATSA 79144; CPATSA 79558; CPATSA 79134; CPATSA 90570; CPATSA 79613), in both assessments, indicating a moderate resistance in relation to the susceptible witness, the cultivar Biloela. There is variability to be explored for the reaction to P. grisea in the Cenchrus BAG from Embrapa Semiárido.Downloads
References
Bedendo, I. P; Prabhu, A. S. 2016. Doenças do Arroz. In: Amorin, L.; Rezende, J. A. M.; Bergamin Filho, A.; Camargo, L. E. A. (org.). Manual de Fitopatologia: Doenças das plantas cultivadas. Vol. 2, 5a ed. Ouro Fino: Agronômica Ceres, pp. 87-99.
Farrell, H. L.; Gornish, E. S. 2019. Pennisetum ciliare: a review of treatment efficacy, competitive traits, and restoration opportunities. Invasive Plant Sci. Manag., 12, 203-213. doi: 10.1017/inp.2019.28
Ferreira, D. F. 2011. Sisvar: a computer statistical analysis system. Ciência e Agrotecnologia, 35, 1039-1042.
Flores, F. A. I.; Rivera, M. H. M.; Medina, S. M.; Martín, F. A. I.; López, R. R. 2019. Impacto economico asociado con los daños del tizón foliar en la producción de semilla del zacate buffel en el centro de Sonora, México. Revista Mexicana de Agronegocios, 45, 313-324.
Franco, A. D.; Rodríguez, A. M.; Cedillo, R. G. 2007. Tizón foliar del pasto buffel: su presencia en Tamaulipas, México. Agricultura técnica en México, 33, 285-295.
Madhavan, S.; Malathi, S.; Rabindran, R.; Paranidharan, V.; Velazhahan, R. 2014. Genetic diversity of Magnaporthe grisea isolates from rice, finger millet, buffel grass and para grass in Tamil Nadu, India. Annals of Plant Protection Science, 22, 142-147.
Marshall, V. M.; Lewis, M. M.; Ostendorf, B. 2012. Buffel grass (Cenchrus ciliaris) as an invader and threat to biodiversity in arid environments: a review. J. Arid Environ., 78, 1-12.
Miller, G.; Friedel, M.; Adam, P.; Chewings, V. 2010. Ecological impacts of buffel grass (Cenchrus ciliaris L.) invasion in central Australia: Does field evidence support a fire-invasion feedback? Rangeland Journal, 32, 353-365. https://doi.org/10.1071/RJ09076
Mnif, L.; Chaieb, M. 2010. Net photosynthesis and leaf water potential of buffel grass (Cenchrus ciliaris L.) accessions, growing in the arid zone of Tunisia. Journal of Biological Research-Thessaloniki, 14, 231-238.
Moreira, N. J.; Lira, M. de A.; Santos, M. V. F. dos; Araújo, G. G. L. de; Silva, C. G. 2007. Potencial de produção de capim-buffel na época seca no semi-árido Pernambucano. Revista Caatinga, 20, 22-29.
Oliveira, M. C. 2005. Capim buffel (Cenchrus ciliaris L.). In: Kiil, L. H. P.; Menezes, E. A. (org.). Espécies vegetais exóticas com potencialidades para o semiárido brasileiro. Petrolina, PE: Embrapa Semiárido; Brasília, DF: Embrapa Informação Tecnológica. pp. 129-156.
Perrott, R. F.; Chakraborty, S. 1999. Pyricularia grisea causes blight of buffel grass (Cenchrus ciliaris) in Queensland, Australia. Tropical Grasslands, 33, 201-206.
Rodriguez, O.; Gonzalez-Dominguez, J.; Krausz, J. P.; Odvody, G. N.; Wilson, J. P.; Hanna, W. W.; Levy, M. 1999. First report and epidemics of buffel grass blight caused by Pyricularia grisea in south Texas. Plant Disease, 83, 398.
Sousa, F. B.; Araujo Filho, J. A. 2007. Capim búfel (Cenchrus ciliaris L.): uma opção para ovinos e caprinos. Sobral: Embrapa Caprinos, Embrapa Caprinos. Comunicado Técnico, 75. 7p.
Tix, D. 2000. Cenchrus ciliaris Invasion and Control in Southwestern U.S. Grasslands and Shrublands. Restoration and Reclamation Review. Student On-line Journal, 6, 1-6.
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Copyright (c) 2021 Rafaela Priscila Antonio, Pedro Martins Ribeiro Júnior, Irlane Cristine de Souza Andrade Lira, Lucas Peixinho Campos Nery, Jullie Cryscelle Leandro Silva, Bruno Djvan Ramos Barbosa, Breno dos Santos Costa
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