Screening of tropical maize inbred lines for disease resistance in Bangladesh

The cultivation of maize in Bangladesh has been boosted over the last decade. Concurrently, diseases are also becoming a major threat to its higher production because of lacking disease-resistant cultivars. The study screened 29 maize inbred lines against southern corn leaf blight, northern corn lea...

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Published inArchiv für Phytopathologie und Pflanzenschutz Vol. 57; no. 1; pp. 22 - 34
Main Authors Suleiman, Jimale, Muzahid-E-Rahman, Md, Arifuzzaman, Md, Ahmed, Asgar, Islam, Md. Mukul, Hasan, Md. Mohidul
Format Journal Article
LanguageEnglish
Published Abingdon Taylor & Francis 02.01.2024
Taylor & Francis Ltd
Subjects
agronomic attributes
Airborne microorganisms
Anthracnose
Blight
Cluster analysis
Corn
Cultivars
Disease resistance
Downy mildew
genetic analysis
Inbreeding
Leaf blight
Leaf streak
Leaves
Maize
Northern leaf blight
Pollen
Rust fungi
Stalk rot
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Summary:The cultivation of maize in Bangladesh has been boosted over the last decade. Concurrently, diseases are also becoming a major threat to its higher production because of lacking disease-resistant cultivars. The study screened 29 maize inbred lines against southern corn leaf blight, northern corn leaf blight, downy mildew, rust, stalk rot, anthracnose, and maize leaf streak in field conditions. Among the inbred lines, Ag-0296, Ag-0305, Ag-0309, Ag-0312, Ag-0314, Ag-0318 and Ag-0321 showed resistance to various diseases. Twenty-one inbred lines belonged to cluster I demonstrated highest plant height (154.75 cm), ear height (61.19 cm) and yield (4.41 t/h), intermediate days to pollen shedding (108.43), days to silking (109.90) and days to maturity (157.14). Finally, cluster analysis revealed Ag-0296, Ag-0298, Ag-0300, Ag-0301, Ag-0303, Ag-0304, Ag-0305, Ag-0306, Ag-0307, Ag-0309, Ag-0310, Ag-0311, Ag-0313, Ag-0315, Ag-0318, Ag-0319, Ag-0321 and Ag-0324 belongs to Cluster I as they showed both disease resistance ability with good agronomic attributes.
ISSN:0323-5408
1477-2906
DOI:10.1080/03235408.2024.2335882