Posts Tagged ‘research impact’

List of STMA supported publications for sub-Saharan Africa for 2019

Posted on Eastern Africa News, Eastern Africa News, Eastern Africa Publications, News, News & Media, News release, Publications, Published Journals, Reports, Research News, Research Publication, Seed System News, Seed System Publication, Southern Africa News, Southern Africa Publications, Southern Africa Publications, West Africa News, West Africa Publications, May 14, 2020

Amondo, E., Simtowe, F., Rahut, D.B., Erenstein, O., 2019. Productivity and production risk effects of adopting drought-tolerant maize varieties in Zambia. International Journal of Climate Change Strategies and Management 11, 570-591. https://doi.org/10.1108/IJCCSM-03-2018-0024

Awata, L. A. O., Ifie, B. E., Tongoona, P., Danquah, E., Jumbo, M. B., Gowda, M., Marchelo-D’ragga, P. W., Sitonik, C., & Suresh, L. M. (2019). Maize lethal necrosis and the molecular basis of variability in concentrations of the causal viruses in co-infected maize plant. Journal of General and Molecular Virology, 9(1), 1-19.

Awondo, S.N., Kostandini, G., Setimela, P., Erenstein, O., in press. Multi-Site Bundling of Drought Tolerant Maize Varieties and Index Insurance. Journal of Agricultural Economics. https://doi.org/10.1111/1477-9552.12344

Buchaillot MB, Gracia-Romero A, Vergara-Diaz O, Zaman-Allah M, Tarekegne A, Cairns JE, Prasanna BM, Araus JL, Kefavuer SC. 2019. Evaluating maize genotype performance under low nitrogen conditions using RGB UAV phenotyping techniques. Sensors 19, 1815.

Chaikam V, Gowda M, Nair SK, Melchinger AE, Boddupalli PM. Genome-wide association study to identify genomic regions influencing spontaneous fertility in maize haploids. Euphytica. 2019 Aug 1;215(8):138.

Chaikam V, Molenaar W, Melchinger AE, Boddupalli PM. Doubled haploid technology for line development in maize: technical advances and prospects. Theoretical and Applied Genetics. 2019:1-7.

Chaikam, V., Gowda, M., Nair, S.K. et al. (2019) Genome-wide association study to identify genomic regions influencing spontaneous fertility in maize haploids Euphytica (2019) 215: 138. https://doi.org/10.1007/s10681-019-2459-

Katengeza, S.P., Holden, S.T., Lunduka, R.W., 2019. Adoption of Drought Tolerant Maize Varieties under Rainfall Stress in Malawi. Journal of Agricultural Economics 70, 198-214. https://onlinelibrary.wiley.com/doi/abs/10.1111/1477-9552.12283

Lunduka, R.W., Mateva, K.I., Magorokosho, C., Manjeru, P., 2019. Impact of adoption of drought-tolerant maize varieties on total maize production in south Eastern Zimbabwe. Climate and Development 11, 35-46. http://dx.doi.org/10.1080/17565529.2017.1372269

Nair S, Chaikam V, Gowda M et al. Genetic dissection of maternal influence on in vivo haploid induction in maize . The Crop Journal. 2019 (in press)

Simtowe, F., Amondo, E., Marenya, P., Rahut, D., Sonder, K., Erenstein, O., 2019. Impacts of drought-tolerant maize varieties on productivity, risk, and resource use: Evidence from Uganda. Land Use Policy 88, 104091. https://doi.org/10.1016/j.landusepol.2019.104091

Simtowe, F., Marenya, P., Amondo, E., Worku, M., Rahut, D.B., Erenstein, O., 2019. Heterogeneous seed access and information exposure: implications for the adoption of drought-tolerant maize varieties in Uganda. Agricultural and Food Economics 7, 15. https://doi.org/10.1186/s40100-019-0135-7

Sitonik, C., Suresh, L.M., Beyene, Y. et al. (2019) Theor Appl Genet (2019) 132: 2381. Genetic architecture of maize chlorotic mottle virus and maize lethal necrosis through GWAS, linkage analysis and genomic prediction in tropical maize germplasm https://doi.org/10.1007/s00122-019-03360-x

Tigist Mideksa Damesa, Jens Möhring, Manje Gowda, Yoseph Beyene, Kassa Semagn, Hans-Peter Piepho, 2019 Comparison of weighted and unweighted stage-wise analysis for genome-wide association studies and genomic selection – Crop Science

Wegary, D., Teklewold, A., Prasanna, B.M. et al. (2019) Molecular diversity and selective sweeps in maize inbred lines adapted to African highlands. Sci Rep 9, 13490 (2019) https://doi:10.1038/s41598-019-49861-z

Wender et al 2019, Performance and Yield Stability of Maize Hybrids in Stress-prone Environments in Eastern Africa,  The Crop Journal (Accepted)

Araus JL, Kefauver SC, Zaman-Allah M, Olsen, Cairns JE. 2018. Phenotyping: New Crop Breeding Frontier. In: R. A. Meyers (ed.), Encyclopedia of Sustainability Science and Technology, Springer Science+Business Media, LLC, part of Springer Nature 2018. https://doi.org/10.1007/978-1-4939-2493-6_1036-1

Das B, Atlin GN, Olsen M, Burgueño J, Tarekegne A, Babu R, Ndou E, Mashingaidze K, Moremoholo L, Ligeyo D, Matemba-Mutasa R, Zaman-Allah M, San Vicente, Prasanna BM, Cairns JE. 2018. Identification of low N tolerant donors for maize breeding in sub-Saharan Africa. Euphytica 215, 80.

Yuan Y, Cairns JE, Babu R, Gowda M, Makumbi D, Magorokosho C, San Vicente F, Olsen M, Prasanna BM, Lu Y, Zhang Y. 2018. Genome-wide association mapping and genomic prediction analyses reveal the genetic architecture of grain yield and flowering time under drought and heat stress conditions in maize. Frontiers in Plant Science 9:1919.

Teklewolda H., Adam, R., Marenya, P. What explains the gender differences in the adoption of multiple maize varieties? Empirical evidence from Uganda and Tanzania. 2020. World Development Perspectives. https://doi.org/10.1016/j.wdp.2020.100206


The list of STMA-supported research publications from Eastern and Southern African region for the year 2019 is out

Posted on Eastern Africa Publications, Published Journals, Research Publication, Seed System Publication, Southern Africa Publications, November 17, 2019

The list of research publications supported by the STMA project for the year 2019 has been compiled. Breakthrough research findings cover adoption studies, evaluation of new maize breeding methodologies, identification of genetic markers for accelerated maize improvement for various stresses including maize lethal necrosis resistance, drought and heat tolerance,…

Amondo et al, 2019. Productivity and production risk effects of adopting drought-tolerant maize varieties in Zambia published in the International Journal of Climate Change Strategies and Management is accessible here

Awata et al, 2019. Maize lethal necrosis and the molecular basis of variability in concentrations of the causal viruses in co-infected maize plant, published in the Journal of General and Molecular Virology is accessible here

Awondo, S.N. et al, 2019. Multi-Site Bundling of Drought Tolerant Maize Varieties and Index Insurance, published in the Journal of Agricultural Economics is accessible here.

Buchaillot MB et al, 2019. Evaluating maize genotype performance under low nitrogen conditions using RGB UAV phenotyping techniques, published in Sensors. Accessible here

Chaikam V et al, 2019. Doubled haploid technology for line development in maize: technical advances and prospects, published in Theoretical and Applied Genetics. Accessible here.

Chaikam, V. et al, 2019. Genome-wide association study to identify genomic regions influencing spontaneous fertility in maize haploids, published in Euphytica, accessible here.  

Katengeza, S.P. et al, 2019. Adoption of Drought Tolerant Maize Varieties under Rainfall Stress in Malawi, published in the Journal of Agricultural Economics. Accessible here.  

Lunduka, R.W. et al, 2019. Impact of adoption of drought-tolerant maize varieties on total maize production in south Eastern Zimbabwe, published in the Climate and Development. Accessible here.  

Nair S et al, 2019. Genetic dissection of maternal influence on in vivo haploid induction in maize, published in The Crop Journal (in press)

Simtowe, F. et al, 2019. Impacts of drought-tolerant maize varieties on productivity, risk, and resource use: Evidence from Uganda, published in the Land Use Policy Journal. Accessible here.  

Simtowe, F. et al, 2019. Heterogeneous seed access and information exposure: implications for the adoption of drought-tolerant maize varieties in Uganda, published in the Agricultural and Food Economics Journal. Accessible here.  

Sitonik, C. et al, 2019. Published in Theoretical and Applied Genetics. Genetic architecture of maize chlorotic mottle virus and maize lethal necrosis through GWAS, linkage analysis and genomic prediction in tropical maize germplasm. Accessible here.

Tigist Mideksa Damesa et al, 2019. Comparison of weighted and unweighted stage-wise analysis for genome-wide association studies and genomic selection, to be published in Crop Science. The PhD dissertation is accessible here.

Wegary, D. et al, 2019. Molecular diversity and selective sweeps in maize inbred lines adapted to African highlands, published in Nature Scientific Reports. Accessible here.  

Wender et al 2019. Performance and Yield Stability of Maize Hybrids in Stress-prone Environments in Eastern Africa,  published in the Crop Journal. Accessible here.  

Not reported but published in 2018

Araus JL et al, 2018. Phenotyping: New Crop Breeding Frontier. In: R. A. Meyers (ed.), Encyclopedia of Sustainability Science and Technology, Springer Science+Business Media, LLC, part of Springer Nature 2018.

Das B et al, 2018. Identification of low N tolerant donors for maize breeding in sub-Saharan Africa. Published in Euphytica and accessible here.

Yuan Y et al., 2018. Genome-wide association mapping and genomic prediction analyses reveal the genetic architecture of grain yield and flowering time under drought and heat stress conditions in maize. Published in Frontiers in Plant Science and accessible here.

Identification of donors for low-nitrogen stress with maize lethal necrosis (MLN) tolerance for maize breeding in sub- Saharan Africa

Posted on , November 17, 2019

After drought, a major challenge to smallholder farmers in sub-Saharan Africa is low-fertility soils with poor nitrogen (N)-supplying capacity. Many challenges in this region need to be overcome to create a viable fertilizer market.

An intermediate solution is the development of maize varieties with an enhanced ability to take up or utilize N in severely depleted soils, and to more efficiently use the small amounts of N that farmers can supply to their crops.

Over 400 elite inbred lines from seven maize breeding programs were screened to identify new sources of tolerance to low-N stress and maize lethal necrosis (MLN) for introgression into Africa-adapted elite germplasm. Lines with high levels of tolerance to both stresses were identified. Lines previously considered to be tolerant to low-N stress ranked in the bottom 10% under low-N confirming the need to replace these lines with new donors identified in this study.

The lines that performed best under low-N yielded about 0.5 Mg ha-1 (20%) more in testcross combinations than some widely used commercial parent lines such as CML442 and CML395. This is the first large scale study to identify maize inbred lines with tolerance to low-N stress and MLN in eastern and southern Africa.

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