Seed Technology for Sustainable Maize Production in Sub-Saharan Africa

Badu‐Apraku, B.; Fakorede, M. A. B.

doi:10.1007/978-3-319-64852-1_20

Cited by 4 publications

(2 citation statements)

References 11 publications

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“…Same result was obtained by Sperling (2001) who reported that seeds from the informal system are inappropriate varieties. Badu et al (2014) also reported that informal seeds do not go through guarantee standards and controlled production networks and therefore could be of poor quality.…”

Section: Discussionmentioning

confidence: 99%

Effect of Farm Saved Maize (Zea mays L.) Seed on Intensity of Foliage Diseases

Mutundi¹,

Muthomi²,

Olubayo³

et al. 2019

JAS

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Majority of farmers in Africa recycle farm saved seed from the previous seasons. Such seed is usually contaminated with disease causing pathogens, has low vigor and result in low yields. This study was, therefore, conducted to determine the effect of recycling maize seeds on incidence of foliage diseases. Maize seeds were collected during 2016 short rain season from farmers, local market and Agrovet shops in Busia County of western Kenya. The seeds were subjected to field evaluation during 2017 long rain season at two sites in Busia and Kakamega Counties. Data was collected on emergence, off types, lodging, ear aspect and abnormalities, incidence and severity of diseases and yield. Seeds from local market had significantly higher emergence of up to 66% while the farm saved seeds and local market resulted in the highest percentage of off-types of up to 18%. Crop from farm saved seed and seeds from the local market showed high susceptibility to stalk lodging, ear abnormalities and high levels of diseases. Diseases detected include northern leaf blight, gray leaf spot, rust, brown spot, downy mildew, and ear rots. The study showed that though informal seeds had high plant establishment, they have high level of off types, are susceptible to lodging, diseases and low yields. Therefore, farmer should be encouraged to use certified or improved seeds to enhance crop productivity.

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Section: Discussionmentioning

confidence: 99%

Effect of Farm Saved Maize (Zea mays L.) Seed on Intensity of Foliage Diseases

Mutundi¹,

Muthomi²,

Olubayo³

et al. 2019

JAS

View full text Add to dashboard Cite

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“…It can also be a good farm enterprise for small farmers, if they are committed to work together as seed producers. The CBSP and delivery system have been proven as a viable alternative seed production scheme for making improved seeds available to farmers across the entire West and Central African region [24].…”

Section: Community Based Seed Production-a Sustainable Seed Productiomentioning

confidence: 99%

Community Based Seed Production—A Sustainable Seed Production Model for Subsistence of Bhutanese Maize Farmers

Katwal¹,

Wangchuk²,

Wangdi³

et al. 2015

JFSE

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Bhutanese maize farmers grow different open-pollinated traditional varieties and improved high yielding varieties recommended by the national maize program. All most every maize farmer uses the recycled seeds from their farms for planting in the next season. Farmers traditional or informal seed system was found to be poorly organized and unscientific that has resulted in the deterioration and contamination of seed quality. Bhutanese maize farmers living in remote areas are highly constrained by the inconsistent supply and poor access to good quality maize seed. The formal public seed sectors lack adequate resources to produce and supply good quality seeds. This called for an urgency to identify and adapt an innovative and a sustainable seed production approach to service the subsistence needs of Bhutanese farmers in a cross-pollinated crop, like maize. The community based seed production (CBSP) approach was introduced and evaluated under the Bhutanese maize production system as an alternative farmer based seed production model. A total of seven farmers CBSP groups were formed and promoted as a smallholder seed enterprise. The technical skills of these CBSP group members on maize seed production were improved through practical demonstrations and trainings. The CBSP groups were supplied with high quality source seed of new maize varieties by the national maize program. For long term, the sustainability of CBSP groups were linked to the formal seed sector in the country for marketing the seeds. The CBSP approach has proven to be a successful small scale maize seed production model under highland maize production ecosystem that has improved the production and supply of good quality maize seeds. The Bhutanese experiences with CBSP in maize, its merits for small holder Bhutanese maize farmers and lessons learnt from the CBSP model are discussed in this paper.

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Combining ability and heterotic grouping of turcicum‐resistant early‐maturing maize inbreds

et al. 2021

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Maize (Zea mays L.), an important source of calories and nutrients in sub‐Saharan Africa, is threatened by northern corn leaf blight (NCLB) caused by Exserohilum turcicum. This study examined combining ability and heterotic patterns of early‐maturing maize inbreds, gene action conditioning NCLB resistance, and performance of derived hybrids across environments and identified testers. Fifteen each of white and yellow inbreds were intercrossed using North Carolina Design II to obtain 75 hybrids per endosperm color. Hybrids plus six checks were inoculated with a virulent isolate of E. turcicum 4 wk after planting in six inoculated and three non‐inoculated environments in Nigeria in 2018 and 2019. Inbreds were assigned to heterotic groups using general combining ability (GCA) of multiple traits method. Specific combining ability (SCA), GCA, and genotype × environment (G × E) interactions were significant for grain yield (GYLD), disease severity, and other traits. Northern corn leaf blight caused 46% GYLD reduction. The effects of GCA were preponderant over SCA for GYLD and NCLB severity across environments, indicating that hybridization and recurrent selection would enhance genetic gains and hybrid performance. White and yellow inbreds were placed in two and three heterotic groups, respectively. High‐yielding NCLB‐resistant testers identified could be used to classify other inbreds yet to be field‐tested into heterotic groups. Genotypes TZEI 32 × TZEI 5 and TZEI 124 × TZEI 134 were identified as single‐cross testers. Genotypes TZEI 32 × TZEI 5 and TZEI 5 × TZEI 75 (white) and TZEI 124 × TZEI 134 and TZEI 124 × TZEI 11 (yellow) were identified for on‐farm testing and possible commercialization.

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Seed Technology for Sustainable Maize Production in Sub-Saharan Africa

Cited by 4 publications

References 11 publications

Effect of Farm Saved Maize (Zea mays L.) Seed on Intensity of Foliage Diseases

Effect of Farm Saved Maize (Zea mays L.) Seed on Intensity of Foliage Diseases

Community Based Seed Production—A Sustainable Seed Production Model for Subsistence of Bhutanese Maize Farmers

Combining ability and heterotic grouping of turcicum‐resistant early‐maturing maize inbreds

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