Diallel analysis of popcorn populations for yield, popping expansion and resistance to fall armyworm

Peterlini, Edicarlos; Pinto, Ronald José Barth; Scapim, Carlos Alberto; Rizzardi, Diego Ary; Bertagna, Filipe Augusto Bengosi; Júnior, Antônio Teixeira do Amaral

doi:10.1590/0034-737x202067040006

Cited by 3 publications

(2 citation statements)

References 17 publications

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“…Based on our DIC values, genotype × environment interaction was observed for both evaluated agronomic traits, since full models presented lower DIC values when compared to null models for GY and PE (Table 2). The presence of genotype × environment interaction for GY and PE has been reported in several popcorn studies, corroborating with this study and indicating that differential behavior of genotypes is environment-dependent (Gerhardt et al 2019;Paula et al 2010;Pena et al 2012;Peterlini et al 2020). In addition, these results confirm that adaptability and stability evaluation are important to mitigate the effects of the genotype × environment interaction (Resende et al 2019).…”

Section: Resultssupporting

confidence: 91%

Adaptability and stability analysis of new popcorn simple hybrids evaluated using additive main effects and multiplicative interaction Bayesian approaches

et al. 2022

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The development of new popcorn cultivars that include wide adaptation, high stability and superior performance characteristics is one of the main alternatives to mitigate the effects of the genotype × environment interaction. In this sense, our main goal was to evaluate the adaptability and stability of new popcorn hybrids using Bayesian additive main effects and multiplicative interaction (BAMMI) method for grain yield (GY) and popping expansion capacity (PE) traits. We evaluated GY and PE from 45 new popcorn hybrids and three commercial cultivars (IAC-125, Pop Top and Top Ten) as checks in six different environments. Genotype × environment interaction, correlation and stability analyses were performed using Bayesian approaches. The full models tested presented the lowest deviance information criterion (DIC) values when compared to null models, indicating the presence of the genotype × environment interaction for both evaluated agronomic traits. Negative correlations were observed between GY and PE (r = -0.24, 95% highest posterior density [HPD] = -0.31; -0.17) and confirm the difficulty to perform selection simultaneously for both characteristics. UEM-3 and UEM-7 hybrids showed wide stability and high a posteriori averages for GY and PE. Both cultivars can be registered and recommended for cultivation in popcorn producing regions.

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Section: Resultssupporting

confidence: 91%

Adaptability and stability analysis of new popcorn simple hybrids evaluated using additive main effects and multiplicative interaction Bayesian approaches

et al. 2022

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“…The corn culture (Zea mays) that has economic and social prominence (Melo, et al, 2006) suffers attacks during almost the entire period of its development (Peterlini, et al, 2020), causing direct damage to plants (Wangen, et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial peptides expressed in the fat body of Spodoptera frugiperda (Lepidoptera: Noctuidae) in response to the microbial challenge

Feistler

Maller²,

Simão³

et al. 2022

RSD

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Spodoptera frugiperda (Lepidoptera: Noctuidae) is the key pest in maize crops and has a major impact on world agriculture. Several studies on the biological control of this species have been carried out, and these demonstrate resistance to biological control and pesticides. However, the humoral immune system of S. frugiperda is not yet completely known in relation to the innate immune response to biological control agents. The aim of this study was to evaluate the expression of Gloverin, Sf-gallerimycin, and Attacin genes in the fat body of larvae at the 6th instar of development. Our work confirmed the expression of Sf-gallerimycin in response to the bacterial challenge, 24 h post-inoculation, and revealed the expression of Gloverin and Attacin for the first time for both bacterial challenge and entomopathogenic fungus Beauveria bassiana challenge. Gloverin and Attacin genes were upregulated under the conditions analyzed. In addition, we revealed the presence of two probable antimicrobial peptides in the hemolymph, induced 24 h post challenge with the microorganisms. The 4.7 kDa band b is probably a defensin-like peptide, and the 6.1 kDa band a is a peptide not yet reported in S. frugiperda.

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Maize Breeding for Low Nitrogen Inputs in Agriculture: Mechanisms Underlying the Tolerance to the Abiotic Stress

2023

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Nitrogen (N) is essential for sustaining life on Earth and plays a vital role in plant growth and thus agricultural production. The excessive use of N fertilizers not only harms the economy, but also the environment. In the context of the environmental impacts caused by agriculture, global maize improvement programs aim to develop cultivars with high N-use efficiency (NUE) to reduce the use of N fertilizers. Since N is highly mobile in plants, NUE is related to numerous little-known morphophysiological and molecular mechanisms. In this review paper we present an overview of the morpho-physiological adaptations of shoot and root, molecular mechanisms involved in plant response to low nitrogen environment, and the genetic effects involved in the control of key traits for NUE. Some studies show that the efficiency of cultivars growing under low N is related to deep root architecture, more lateral roots (LR), and sparser branching of LR, resulting in lower metabolic costs. The NUE cultivars also exhibit more efficient photosynthesis, which affects plant growth under suboptimal nitrogen conditions. In this sense, obtaining superior genotypes for NUE can be achieved with the exploitation of heterosis, as non-additive effects are more important in the expression of traits associated with NUE.

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Diallel analysis of popcorn populations for yield, popping expansion and resistance to fall armyworm

Cited by 3 publications

References 17 publications

Adaptability and stability analysis of new popcorn simple hybrids evaluated using additive main effects and multiplicative interaction Bayesian approaches

Adaptability and stability analysis of new popcorn simple hybrids evaluated using additive main effects and multiplicative interaction Bayesian approaches

Antimicrobial peptides expressed in the fat body of Spodoptera frugiperda (Lepidoptera: Noctuidae) in response to the microbial challenge

Maize Breeding for Low Nitrogen Inputs in Agriculture: Mechanisms Underlying the Tolerance to the Abiotic Stress

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