Evaluation of wheat genotypes for field resistance to wheat blast caused by Magnaporthe oryzae pathotype Triticum (MoT) and correlation between yield loss and disease incidence in the Brazilian Cerrado

Dianese, A. de C.; Zacaroni, Ana Beatriz; Souza, Bruno Cézar Pereira de; Pagani, Ana Paula da Silva; Pinheiro, Nelson Oliveira; Gomes, Eduardo Monteiro de Castro; Torres, G. A. M.; Consoli, Luciano; Filho, Adalberto Corrêa Café

doi:10.1007/s10681-021-02816-w

Cited by 7 publications

(5 citation statements)

References 23 publications

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“…In the same municipality, similar results were obtained by Coelho et al (2016). Under blast hotspot conditions, a positive correlation between yield losses and blast incidence was also observed for early cycle genotypes (Dianese et al, 2021).…”

Section: Resultssupporting

confidence: 80%

“…On the other hand, severity levels reveal which genotypes present mechanisms to restrain pathogen colonization (Ferreira et al, 2020). Dianese et al (2021) infer that upon field prone conditions to wheat blast, once a spike is infected by MoT blast severity on that spike will generally be very high. Anahuac 75 showed the highest blast disease index (43.9) which was significantly different from all other genotypes.…”

Section: Resultsmentioning

confidence: 99%

“…Besides the variability of resistance levels conferred by this translocation, their solely use can risk to select more aggressive races of the pathogen. Though finding novel sources of blast resistance is imperative (Cruz & Valent, 2017;Juliana et al, 2020;Dianese et al, 2021;Juliana et al, 2022). Cruppe et al (2020) evaluated over 780 accessions searching for identifying non-2NS sources of resistance to wheat blast, and only 1% of them was characterized as resistant or moderately resistant to the pathogen.…”

Section: Resultsmentioning

confidence: 99%

“…In the context of tropical and subtropical regions of wheat cultivation in Brazil, more than characterize spike reaction it is essential to evaluate crop losses under field conditions. A strong correlation between blast incidence on the spikes and yield loss was found for early cycle genotypes evaluated in a hotspot site for wheat blast (Dianese et al, 2021). In this work, the objective was to assess disease intensity and yield losses for 2NS and non-2NS carriers wheat genotypes with different heading times in the Cerrado of Minas Gerais under conditions of wheat cultivation.…”

Section: Annually the Brazilian Wheat And Triticale Researchmentioning

confidence: 99%

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Non-2NS blast resistant wheat genotypes evaluated in the Brazilian Cerrado

et al. 2023

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Searching for novel sources of resistance to head blast is essential to strengthen wheat production in the Cerrado´s biome. The objective of this work was to evaluate disease intensity measures and yield for 2NS and non-2NS carriers wheat genotypes with varying heading times in Minas Gerais, Brazil. A total of fourteen wheat genotypes, two susceptible and twelve resistant to head blast, were sown in 2014, 2015, and 2017 at the Sertãozinho Experimental Station of Empresa de Pesquisa Agropecuária de Minas Gerais (Epamig) during three sowing dates without fungicide applications. The experimental design was a randomized complete block with three replicates. Blast incidence, severity, disease index and grain yield were influenced by the cycle of wheat genotypes and the sowing date, with the highest disease intensities and the lowest yields in the earliest sowing date. Blast incidence and disease index correlated negatively with grain yield and positively with percent yield losses. The group of wheat genotypes with higher grain yield (between 2,104.7 and 2,917.8 kg ha -1 ) and lower yield losses (between 44.3 and 54.8%) includes BR 18 as well as other five that do not carry

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Section: Resultssupporting

confidence: 80%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Annually the Brazilian Wheat And Triticale Researchmentioning

confidence: 99%

See 2 more Smart Citations

Non-2NS blast resistant wheat genotypes evaluated in the Brazilian Cerrado

et al. 2023

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“…Despite occurring at a wide range of latitudes, epidemics are most frequent and more damaging in the tropics of Brazil (Ceresini et al, 2018; Coelho et al, 2016). Although symptoms may appear on both the leaves and the heads, the more frequent crop damage, with yield losses nearing 100%, is caused by head blast (Dianese et al, 2021; Goulart et al, 2007; Goulart & Paiva, 2000). In fact, the first outbreak in Bangladesh resulted in complete destruction of some fields (Malaker et al, 2016).…”

Section: Introductionmentioning

confidence: 99%