Selection of popcorn hybrids resistant to southern corn leaf blight grown in distinct N availability

Kurosawa, Railan do Nascimento Ferreira; Júnior, Antônio Teixeira do Amaral; Vivas, Janieli Maganha Silva; Vivas, Marcelo; Kamphorst, Samuel Henrique; Lima, Valter Jário de; Almeida, Rafael Nunes de

doi:10.1007/s10658-020-02091-w

Cited by 11 publications

(8 citation statements)

References 19 publications

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“…Based on Clarke (1986), Best et al (2008), and Pagán and García‐Arenal (2018), the resistance reaction to the arrival of the pathogen can be due to limiting its multiplication or delaying its growth and development (Little et al, 2010; Råberg, 2014) on or in the plant host. Considering SCLB disease assessed, Kurosawa et al (2020), Santos et al (2020), Saluci et al (2020) and Sharma et al (2021) also reported that there exists a large variability of maize genotypes, including inbred or segregating lines and hybrids, with different resistance degrees to the disease; this statement is confirmed by the current study.…”

Section: Resultssupporting

confidence: 84%

Rapid screening for resistance of maize inbred and hybrid lines against southern corn leaf blight

Shukuru,

Archana,

Kangela

2023

Journal of Phytopathology

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Bipolaris is one of the most important phytopathogenic fungal genera to cause disease in cereal crops. Southern corn leaf blight (SCLB) is a pandemic and widespread disease; it's found everywhere corn is grown, causing a noticeable reduction in crop yield. Most cultivated varieties of maize do not resist SCLB disease where it is reported. Nevertheless, previous researchers have reported some resistant varieties of maize. In this study, we tested inbred and hybrid lines collected from ICAR‐IIMR based in Ludhiana against the disease. The field experiment was setup using a Randomized Block Design with three replications in natural conditions. Here we evaluated lines by quantifying disease pressure, yield, and their attributes. Moreover, model‐based clustering allowed the identification of five groups. For the SCLB disease confirmation, infected maize leaves were collected and used for pathogen isolation, and a pure culture was maintained. Both disease assessment and data analysis focused more specifically on characters that showed significant differences between means, especially leaf area, percentage of leaf infection, disease incidence, disease severity, disease index by plot basis, number of grain rows formed per ear, weight of maize kernels per ear, each corn ear weight, shelling percentage, and grain yield. The two best clusters identified, namely Group 1 and Group 2, together comprise 11002, 11009, 11026, 11030, 11069, 11149, 11153, 11185, 11328, 11333, 11337, 11347, 11370, 11385, 11074, 11351, 11356, 11357, 11608, and Karav‐8523 lines. As per disease reaction, CM‐500 is individually one of the best lines in terms of SCLB resistance. Specific symptoms were clearly found on leaves, and pseudo‐septate conidia were observed under the microscope. Thus, several lines exhibited highly resistant reactions against SCLB, especially 11002, 11009, 11026, 11069, 11074, 11337, 11347, 11385, and CM‐500, and can still be recommended for farmers and in breeding programmes, for future usefulness as industries are complaining of maize shortages, and they present a great commercial potential.

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Section: Resultssupporting

confidence: 84%

Rapid screening for resistance of maize inbred and hybrid lines against southern corn leaf blight

Shukuru,

Archana,

Kangela

2023

Journal of Phytopathology

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“…By contrast, necrotrophs promote the destruction of host cells and feed on the remains (Rossi et al, 2017). Bipolaris maydis ( B. maydis , teleomorph: Cochliobolus heterostrophus ) is a necrotrophic pathogen which causes southern corn leaf blight (SCLB) (Balint‐Kurti et al, 2007; Kurosawa et al, 2020). Southern corn leaf blight is one of the most devastating foliar diseases of maize ( Zea mays ) and dramatically reduces maize yield and quality worldwide, especially in hot and subtropical regions (Hou et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Ascorbate peroxidase 1 confers resistance to southern corn leaf blight in maize

Zhang

Jia

Wang

et al. 2022

JIPB

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Southern corn leaf blight (SCLB), caused by Bipolaris maydis, is one of the most devastating diseases affecting maize production. However, only one SLCB resistance gene, conferring partial resistance, is currently known, underscoring the importance of isolating new SCLB resistancerelated genes. Here, we performed a comparative proteomic analysis and identified 258 proteins showing differential abundance during the maize response to B. maydis. These proteins included an ascorbate peroxidase (Zea mays ascorbate peroxidase 1 (ZmAPX1)) encoded by a gene located

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“…Genetic effects controlling popcorn traits under well-watered conditions (Larish and Brewbaker, 1999 ; Pereira and Amaral Júnior, 2001 ; Silva et al, 2010 ; Jele et al, 2014 ; Dar et al, 2018 ; Coan et al, 2019 ; Schwantes et al, 2020 ), biotic stresses (Schwantes et al, 2017 ; Mafra et al, 2018 ; Amaral Júnior et al, 2019 ; Kurosawa et al, 2020 , 2021 ), and nutritional deficiencies (Gerhardt et al, 2019 ; Santos et al, 2019 , 2020 ) have revealed that the additive genetic action is prevalent for PE, whereas the non-additive action has been the most important for GY expression and its components. In addition, non-additive genetic effects were the most prevalent controlling GY under water limitations in tropical maize (Betrán et al, 2003 ).…”

Section: Introductionmentioning

confidence: 99%

Driving Sustainable Popcorn Breeding for Drought Tolerance in Brazil

et al. 2021

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Drought currently affects several regions worldwide and tends to be more frequent due to climate change. It might compromise food security and the economic structure related to agribusiness. Popcorn has a crucial role in the Brazilian economy, but the cultivars that adapt to water stress, the most prejudicial abiotic stress for crop productivity, are unknown to date. This deficit of popcorn varieties adapted to heat and drought stresses will become more limiting with climate change. Given this scenario, knowing the genetic basis of agronomic traits under stress conditions is essential in promoting crop productivity and plant adaptation to abiotic stresses. Under two contrasting water conditions (WC) and different crop seasons (CS), we aimed to generate information about the combining ability of 10 popcorn progenitors and 15 hybrids through a partial diallel-mating design. The water stress was initiated at the male pre-anthesis stage. Significant genotype*crop seasons (G*CS), genotype*water condition (G*WC), and genotype*crop seasons*water condition (G*CS*WC) interactions were present. Regardless of CS and WC, non-additive effects controlled grain yield (GY), grain number per row (GN), ear length and diameter (ED), and 100-grain weight, while additive effects were present for popping expansion (PE). For each CS, regardless of WC, the cause-effect of GN (2018) and ED (2020) on GY seems to be an opportunity for indirect selection. Utilizing genetically broad-based hybrids is also a good opportunity for obtaining superior genotypes for GY and PE as it is possible to select inbred lines for both of these traits. We recommend the L76 × L61 hybrid for the Brazilian agribusiness context due to its greater productivity and dominance deviations.

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Selection of popcorn hybrids resistant to southern corn leaf blight grown in distinct N availability

Cited by 11 publications

References 19 publications

Rapid screening for resistance of maize inbred and hybrid lines against southern corn leaf blight

Rapid screening for resistance of maize inbred and hybrid lines against southern corn leaf blight

Ascorbate peroxidase 1 confers resistance to southern corn leaf blight in maize

Driving Sustainable Popcorn Breeding for Drought Tolerance in Brazil

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