Screening of inbred lines of tropical maize for resistance to fall armyworm, and for yield and yield-related traits

Kasoma, Chapwa; Shimelis, Hussein; Laing, Mark; Shayanowako, Admire; Mathew, Isack

doi:10.1016/j.cropro.2020.105218

Cited by 33 publications

(30 citation statements)

References 23 publications

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“…This implies that varietal screening for FAW tolerance can be effectively implemented under natural FAW infestation. The current study is the second reported study that has evaluated germplasm resources in SSA under natural FAW infestation after the first [31]. The findings are encouraging for national research programs and other breeding programs across SSA that have no access to artificial screening environments for FAW tolerance breeding, as they can effectively evaluate their breeding materials under natural FAW infestation.…”

Section: Discussionmentioning

confidence: 60%

Fall Armyworm Tolerance of Maize Parental Lines, Experimental Hybrids, and Commercial Cultivars in Southern Africa

et al. 2022

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Fall armyworm [Spodoptera frugiperda (J./E. Smith); FAW] is negatively impacting sustainable maize production, particularly in smallholder farming systems in sub-Saharan Africa. Two sets of germplasm (commercial cultivars and experimental hybrids, and local and exotic inbred lines) were evaluated under managed and natural FAW infestation to identify FAW tolerant material with superior grain yield performance. Significant genotypic effects on foliar FAW damage, ear FAW damage, and grain yield were observed. Commercial cultivars were significantly more affected by FAW infestation than experimental hybrids, as evidenced by high foliar and ear damage scores, yet they out-yielded experimental genotypes. The introduced FAW donor lines (CML338, CML67, CML121, and CML334) showed better tolerance to FAW, individually and in hybrid combinations. Local inbred lines, SV1P, CML491, and CML 539, also showed FAW tolerance. Hybrids and open pollinated varieties were more vulnerable to FAW damage at early growth stages, but they grew out of it through the mid to late whorl stages. Inbred lines showed increasing damage as they grew to maturity. Husk cover, ear rot, anthesis date, and plant height were highly correlated with FAW tolerance. The identified local and exotic lines with FAW tolerance will contribute to FAW resistance breeding in southern Africa.

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Section: Discussionmentioning

confidence: 60%

Fall Armyworm Tolerance of Maize Parental Lines, Experimental Hybrids, and Commercial Cultivars in Southern Africa

et al. 2022

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“…Farmers consider cob size as a key yield-related trait, and they usually use cob size for visual selection of varieties with high yield. Findings of De Groote et al (2002), Kasoma et al (2020), andYatai et al (2020) revealed that top varieties that receive farmers' highest score for grain yield are usually the same as those that receive the highest ranks for cob size. Nitrogen use efficiency was ranked as the fifth most important trait by farmers ahead of other stress response traits like drought tolerance (ranked 7th), pest and disease resistance (ranked 8th), and Striga resistance (ranked 16th) (Table 2).…”

Section: Trait Preferences Of Maize Value Chain Actors In the Study Areasmentioning

confidence: 99%

Trait profile of maize varieties preferred by farmers and value chain actors in northern Ghana

Adu¹,

Badu‐Apraku

Akromah

et al. 2021

Agron. Sustain. Dev.

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Plant breeders’ knowledge of precise traits preferred by variety users would accelerate varietal turnover and widen adoption of newly developed maize varieties in Ghana. The objective of this research was to provide empirical evidence of trait preferences of farmers and other actors in the maize value chain in northern Ghana, based on which research strategies for maize improvement could be formulated. Participatory rural appraisal was conducted in 2016 to determine key traits preferred by maize value chain actors across the three regions in northern Ghana. A total of 279 maize value chain actors were interviewed. Different scoring and ranking techniques were used to assess the maize traits preferred by the different actors. Participatory variety selection trials were also conducted in the Tolon, West Gonja, Binduri, and Sissala East districts in northern Ghana from 2014 to 2016. The mother-baby trial approach was used to evaluate eight hybrids with 3000 farmers. Data on yield and agronomic performance of the hybrids and farmer’s selection criteria were collected. Data analyses were performed using GenStat Edition 16 and SPSS Edition 20 statistical packages. The participatory rural appraisal method identified farmers, input dealers, traders, and processors as the primary maize value chain actors in the study areas. Trait preferences of the different actors overlapped and revolved around grain quality including nutritional value, and stress tolerance and grain yield. Results of the participatory variety selection study revealed that across districts, farmers preferred high-yielding varieties with multiple cobs per plant, white grain endosperm color, and bigger and fully filled cobs. For the first time, our holistic assessment of the trait preferences of key actors of the maize value chain in northern Ghana revealed a comprehensive list of traits, which could be used by breeders to develop varieties that may be preferred by all value chain actors in northern Ghana.

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“…Kasoma et al. (2020b) selected inbred lines CZL1310c, CML444‐B, CZL15220, TL1512847, and CML491 with partial resistance to FAW, earliness to flowering, and high grain yield in an evaluation trial, which can be used in developing maize breeding populations with both partial resistance to FAW and yield gains for tropical and subtropical regions. As FAW feeding could expose ears to fungal infection, like Aspergillus flavus (produces aflatoxin), three single‐cross hybrids (Mp715 × Mp707, Mp715 × Mp716, and Mp719 × Mp716) showed resistance to both FAW infestation and aflatoxin accumulation (Williams et al., 2018).…”

Section: Faw Resistance In Maize Landraces and Other Native Germplasmmentioning

confidence: 99%

“…Similarly, Malook et al (2021) reported that Chinese inbred Xi502 showed resistance against FAW; and FAW feeding induced more defensive transcriptomic signatures, higher sustained jasmonates accumulation, and higher levels of benzoxazinoids in Xi502 than B73. Kasoma et al (2020b) selected inbred lines CZL1310c, CML444-B, CZL15220, TL1512847, and CML491 with partial resistance to FAW, earliness to flowering, and high grain yield in an evaluation trial, which can be used in developing maize breeding populations with both partial resistance to FAW and yield gains for tropical and subtropical regions.…”

Section: Crop Sciencementioning

confidence: 99%

Maize diversity for fall armyworm resistance in a warming world

Singh

Schaefer

et al. 2021

Crop Science

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Currently, maize (Zea mays L.) production is under threat from climate change, drought, and pests such as fall armyworm (FAW) [Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae)]. Since its first detection outside of its native range in 2016, FAW has spread into 76 nations across Africa and Asia adversely affecting maize production and, in turn, the livelihoods of millions of smallholder farmers. Thus, there is a strong need for the development of cost-effective and biologically based integrated pest management (IPM) practices including host-plant resistance (HPR). However, most of the commercial maize cultivars have lost some defensive traits through selective breeding for yield during domestication. The majority of the commercially cultivated hybrids and cultivars in Asia and Africa are highly susceptible to FAW. Therefore, this review summarizes information about various maize landraces, native germplasm, and crop wild relatives (CWRs) possessing FAW resistance traits and about their potential resistance mechanisms, namely antibiosis, antixenosis, and tolerance. There is clear evidence of FAW resistance acting through diverse mechanisms in several maize landraces, germplasm lines, native populations, and CWRs such as Antigua race, FAW Tuxpeno, Zapalote Chico 2451F, Doce Flor da Serra, FAWCC (C5), CMS 14C, PopG (C2), Mp708, Mp 704, CML 67, and FAW 7050, as well as a few species of teosinte and Tripsacum L. Further, a scheme that outlines strategies and approaches for prebreeding and their introgression into elite cultivars for developing FAW-resistant maize is proposed as a possible way forward.

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Screening of inbred lines of tropical maize for resistance to fall armyworm, and for yield and yield-related traits

Cited by 33 publications

References 23 publications

Fall Armyworm Tolerance of Maize Parental Lines, Experimental Hybrids, and Commercial Cultivars in Southern Africa

Fall Armyworm Tolerance of Maize Parental Lines, Experimental Hybrids, and Commercial Cultivars in Southern Africa

Trait profile of maize varieties preferred by farmers and value chain actors in northern Ghana

Maize diversity for fall armyworm resistance in a warming world

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