Abstract
<p><strong>Background.</strong> The fall armyworm <em>Spodoptera frugiperda </em>is one of the most damaging pests of maize in tropical areas. <strong>Objective.</strong> To evaluate the damage caused by <em>S. frugiperda</em> and the leaf morphological traits in 15 populations of maize landrace. <strong>Methodology.</strong> The leaf damage caused by <em>S. frugiperda</em> and four-leaf morphological traits (leaf blade thickness, leaf blade hardness, specific leaf area and trichome density) were evaluated at 20, 30 and 40 days after emergence (DAE) in two seasons, dry (March and April) and rainy (June and July). Spearman correlation between the degree of leaf damage and each leaf morphological trait was also evaluated. <strong>Results.</strong> Maize populations showed differential response to the damage caused by <em>S. frugiperda</em> among seasons and evaluating date. The leaf morphological traits were different between seasons and among evaluating dates. The trichome density had intermediate negative correlation with the level of leaf damage in rainy season (<em>r<sub>s</sub></em> = − 0.32,<em> p</em> &lt; 0.001). <strong>Implications.</strong> The lower leaf damage may be indicator of resistance against <em>S. frugiperda</em>. <strong>Conclusion.</strong> The population 2020−M62 had low susceptibility to <em>S. frugiperda</em>, this population may be candidate for maize breeding program.</p>
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.