Relationship between seed physical traits and maize weevil (Sitophilus zeamais) damage parameters in selected Quality Protein Maize (QPM) varieties

Oloyede-Kamiyo, Qudrah Olaitan; Adetumbi, J. A.

doi:10.1016/j.jspr.2017.06.003

Cited by 7 publications

(5 citation statements)

References 15 publications

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“…Anatomical barriers of the kernel, such as the pericarp thickness/ toughness, kernel hardness and endosperm vitreous have been directly correlated with the level of resistance (Akpodiete et al, 2015;Classen et al, 1990;García-Lara et al, 2004;Serratos et al, 1987). Studies performed in QPM varieties concluded that kernel hardness per se is not a sole factor influencing susceptibility to S. zeamais infestation (Demissie et al, 2015;Oloyede-Kamiyo and Adetumbi, 2017). Pericarp thickness/toughness is a biophysical trait closely associated with cell wall reinforcement.…”

Section: Biophysical Factorsmentioning

confidence: 99%

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Postharvest insect resistance in maize

López-Castillo

Silva-Fernández

Winkler

et al. 2018

Journal of Stored Products Research

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One of the main challenges for the 21st century is ensuring global food security. Today, maize is the largest staple crop produced worldwide. Postharvest primary insect pests, especially the maize weevil (Sitophilus zeamais) and the large grain borer (Prostephanus truncatus) cause food-grain losses during storage up to 40% of total production, mainly in developing countries. Alternatives for pest management have been explored, including the implementation of hermetic storage structures and the application of chemical insecticides. Nevertheless, in low-income regions, both strategies are rarely accessible to smallholders. Modern breeding programs have endeavored to develop insect-resistant varieties, which diminish postharvest pest losses. In this review, we report the current status and advances in maize kernel-pest interactions, the bases and mechanisms of kernel resistance and their biotechnological perspectives. We demonstrate that the comprehension of resistance mechanisms has been fundamental for the development of new productive and resistant varieties, representing a sustainable alternative for developing countries. Finally, we analyse the biotechnological perspectives of natural kernel resistance in global food security.

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Section: Biophysical Factorsmentioning

confidence: 99%

“…Influenced by phytochemical compounds implicated in cell-wall reinforcement mechanisms. Classen et al, 1990;García-Lara et al, 2004;Oloyede-Kamiyo and Adetumbi, 2017;Santiago et al, 2013;Saulnier and Thibault, 1999 Vitreous endosperm Implicated in resistance against P. truncatus and S. zeamais.…”

Section: Bases Of Resistancementioning

confidence: 99%

Postharvest insect resistance in maize

López-Castillo

Silva-Fernández

Winkler

et al. 2018

Journal of Stored Products Research

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“…In the present study, we used only one population of S. zeamais. The resistance of maize to storage pests is influenced by biophysical, biochemical, and genetic factors including kernel hardness [37,38], pericarp thickness [17], phenolic compounds, enzymes, and structural components of the kernel [39,40,37,41,42,43]. However, all these characteristics vary with the environment, making it important to evaluate and improve varieties for specific environments.…”

Section: Discussionmentioning

confidence: 99%

“…Out of a total of 175 genotypes, including hybrids, landraces, open-pollinated varieties, and controls, the most resistant genotypes were CKPH08003 and BRAZ 2451 [16]. The conventional inbred line KU1414SR/SR, out of five maize varieties studied, showed the best level of resistance to S. zeamais [17]. KH631Q was the most resistant hybrid to S. zeamais out of 22 hybrids and 2 controls [18].…”

Section: Introductionmentioning

confidence: 99%

Identification of Resistance to the Corn Weevil (Sitophilus zeamais M.) in Mexican Maize Races (Zea mays L.)

et al. 2023

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Sitophilus zeamais (Motsch.) (Coleoptera: Curculionidae) has a global distribution and is one of the most important post-harvest pests of maize (Zea mays L.). Some Mexican maize races could be a novel source of resistance against S. zeamais to improve commercial maize, generating lines, varieties, and hybrids with resistance to the pest. These are original races from the center of origin of maize and have been exposed to selection pressure from S. zeamais and other pests for thousands of years, which probably resulted in some type of resistance. We studied the resistance of Mexican maize races to S. zeamais focusing on antixenosis, antibiosis, and tolerance. Antibiosis reduces the survival and reproduction of the insect or prolongs the time between generations, whereas antixenosis reduces the rate of initial and successive accumulation of the insect population. Obligate-antibiosis and free-choice bioassays were performed, and in those experiments, resistance traits and the consumption by S. zeamais were measured. The most resistant accession showed high adult mortality and fewer adults in the 1st generation, where the number of emerged adults is an ideal trait to evaluate the level of maize resistance to the pest. Net consumption (in grams) is the most economically important trait because it indicates the gross amount lost in a store, while yield losses (percentage of consumption) allow for studying tolerance. The type of endosperm did have an influence on the resistance/tolerance to S. zeamais. The flint varieties showed significantly higher mortality of adults before entering the seed, a lower quantity of emerged adults of the first generation in the obligate-antibiosis bioassay, and lower net consumption and percentage in both bioassays. In general, the varieties of the races Cristalino de Chihuahua, Apachito, and Azul showed high levels of resistance, with the Cristalino-079 (flint) and Azul (floury) accessions also being tolerant, and low levels of consumption by S. zeamais. Both could be used in breeding programs to reduce losses caused by S. zeamais.

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“…This concern is even more important when considering the ability of maize weevil to disseminate fungi of the genera Aspergillus, Penicillium and Fusarium in the grain and seed masses. These fungi take advantage of the insect damage, increasing aflotoxins that contribute to the reduction of germination, vigor and lot disposal in the case of seeds [2,4,5,6].…”

Section: Introductionmentioning

confidence: 99%

The Compared Efficiency of the Traditional Method, Radiography without Contrast and Radiography with Contrast in the Determination of Infestation by Weevil (Sitophilus zeamais) in Maize Seeds

Carvalho

Leite

Carvalho

et al. 2019

Insects

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Technologies that increase safety and efficiency, while facilitating and streamlining the work of seed analysts, are increasingly required by the seed industry. X-ray image analysis is a technique that has been used in the analysis of grain and seeds because it is fast, accurate and non-destructive. The traditional method to verify the presence of insect damage in seeds involves manual cutting of the seeds, which endangers the safety of the analyst and is time-consuming and repetitive work that leads to visual fatigue. The objective of this study was to compared the efficiency of radiographic analysis with and without contrast in the determination of infestation by Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae), at different stages of development, in maize seeds, compared to the traditional method required by seed legislation, which consists of cutting and visual evaluation. Seeds were evaluated regarding the presence of eggs/oviposition signs, larvae, pupae, adult insects, insect damage in five infestation periods (5, 18, 33 and 35 days after infestation), while evaluating the total number of seeds infested, comparing the three methods. For characterization of the oviposition stage, the use of contrast was best at all times of infestation. For the larval stage, there was no difference between the evaluation methods; however, at 18 days, larger infestations were observed by the traditional method. At 5 days, the identification of pupae was better by the traditional method and radiography without contrast, while for the identification of adult insects the best method was the use of radiography without contrast. The characterization of the level of infestation with maize weevil damage was best verified using contrast radiography. Radiographic analysis is efficient in the detection of damage caused by S. zeamais in maize seeds. This method of radiographic analysis (with or without contrast) is thus an auxiliary tool to assess the damage and presence of S. zeamais in maize seeds.

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Relationship between seed physical traits and maize weevil (Sitophilus zeamais) damage parameters in selected Quality Protein Maize (QPM) varieties

Cited by 7 publications

References 15 publications

Postharvest insect resistance in maize

Postharvest insect resistance in maize

Identification of Resistance to the Corn Weevil (Sitophilus zeamais M.) in Mexican Maize Races (Zea mays L.)

The Compared Efficiency of the Traditional Method, Radiography without Contrast and Radiography with Contrast in the Determination of Infestation by Weevil (Sitophilus zeamais) in Maize Seeds

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