This dataset contains the results from three regional trials carried out in Eastern Africa in 2019. Each report focuses on a different product profile. Two reports present data for product profile EA-PP1, It focuses on includes early/intermediate-maturing white maize with multiple stress tolerance (drought, low N, MLN, MSV, TLB, GLS, ear rots) for the Eastern African rainfed mid-altitude dry/wet agro-ecologies. The third report presents data for product profile EA-PP2. It focuses on late-maturing, white maize varieties with multiple stress tolerance (drought, low N, GLS, TLB, MSV, ear rots, Striga) for the Eastern African rainfed upper mid-altitude region.
This dataset contains information about the performance of maize inbred lines in Eastern Africa following inoculation with aflatoxin. The aflatoxin-related traits described in the dataset are: AFLTXB1 = Aflatoxin B1; AFLTXB2 = Aflatoxin B2; AFLTXG1 = Aflatoxin G1; AFLTXG2 = Aflatoxin G2, and AFLTXPPB = Aflatoxin Total.
Gray leaf spot (GLS) is a major maize foliar disease in sub-Saharan Africa that can substantially reduce yields for farmers. This dataset contains supporting phenotypic and genotypic data used in the analysis of the genetic architecture of GLS resistance in maize. The data in this paper relate to several different sets of germplasm: (1) The IMAS (Improved Maize for Africa Soils) panel with 430 lines assembled from diverse breeding programs from Africa, Asia and Latin America. (2) A DH population developed from crossing CML550 with CML494; (3) A DH population developed from crossing CML550 with CML504; (4) A DH population developed from crossing CML550 with CML511; and (5) several F3 populations The IMAS panel is a good source for genetic studies on resistance for several maize diseases and also for abiotic stress like low N conditions. The DH populations are a good source for low N discovery studies as well as for MLN and other disease resistance studies.
The summary results of the Regional Trials for CIMMYT Maize Hybrids in Southern Africa for 2017. The trials include EHYB17 - Early maturing hybrids. IHYB17 - Medium maturing hybrids. WEHYB17 - Early and medium maturing WEMA hybrids. LHYB17 - Late maturing hybrids. WLHYB17 - Medium and late maturing WEMA hybrids. ADVQPM17 - QPM hybrids.
New and improved maize hybrids, developed by the CIMMYT Global Maize Program, are available for uptake by public and private sector partners, especially those interested in marketing or disseminating hybrid maize seed across Eastern Africa and similar agro-ecological zones. Following a rigorous trialing and a stage-gate advancement process CIMMYT advanced a set of new elite maize hybrids in Eastern Africa in 2018. Phenotypic data collected in Stage 4 trials for the selected hybrids as well as information about the trial sites are provided in this dataset. These trials were conducted through a network of partners, including NARES and private seed companies, in Eastern Africa under various management and environmental conditions. The summary results of the Regional Trials for CIMMYT Maize Hybrids in Eastern Africa for 2017. The trials include: EHYB17-Set I – Early/extra-early maturing elite pre-commercial hybrids regional trials (including external and internal checks); IHYB17-Set I – Intermediate maturing elite pre-commercial hybrids regional trial (including external and internal checks); ILHYB17 – Intermediate-Late maturing elite pre-released and released hybrids regional trials (including external and internal checks); EHYB17-Set II – Early maturing elite pre-commercial hybrids regional trials; ILHYB17 Set II – Intermediate/late maturing elite pre-commercial hybrids regional trials.
New and improved maize hybrids, developed by the CIMMYT Global Maize Program, are available for uptake by public and private sector partners, especially those interested in marketing or disseminating hybrid maize seed across eastern and southern Africa and similar agro-ecological zones. Following a rigorous trialing and a stage-gate advancement process CIMMYT advanced new elite maize hybrids in eastern and southern Africa in 2019. Phenotypic data collected in trials for the selected hybrids as well as information about the trial sites are provided in this dataset. These trials were conducted through a network of partners, including NARES and private seed companies, in eastern and southern Africa under various management and environmental conditions. The summary results of the Regional Trials for CIMMYT Maize Hybrids in Eastern Africa for 2018 specific to different product profiles. The trials include: IHYB18 – Intermediate maturing elite pre-commercial hybrids regional trial: Product profile 1A (Eastern Africa) - Basic traits (Intermediate maturing, white, high yielding, drought tolerant, NUE, and resistant to GLS, TLB, Ear rots, and MSV); Nice to have/emerging traits (MLN, Striga, FAW). MLN 3WAY HYB18 - Intermediate maturing elite pre-commercial MLN 3way hybrids regional trial: Product profile 1B (Eastern Africa): Basic traits (Intermediate-maturing, white, high-yielding, drought tolerant, NUE, resistant to MLN, MSV, TLB); Nice to have/ emerging traits (FAW, Striga). ILHYB18 – Intermediate-Late maturing elite pre-released and released hybrids regional trials: Product profile 2 (Eastern Africa) - Basic traits (Late-maturing, white, high-yielding, Drought tolerance, NUE, and resistant to GLS, TLB, MSV Ear Rots, and rust); Nice to have/ Emerging traits (FAW, MLN, Striga). EHYB18 – Early/extra-early maturing elite pre-commercial hybrids regional trials: Product profile 3 (Eastern Africa) - Basic Traits (Early-maturing, white, high-yielding, Drought tolerant, and resistant to MSV and MLN, NUE); Nice to have traits (Heat tolerant, TLB, Rust, Striga). Pro-A HYBSI7; Pro-A HYBSI8- Intermediate maturing elite pre-commercial Provitamin A hybrids regional trial: Product profile 3 (Southern Africa)- Basic traits (Nutritious maize, early-late maturity, orange and/ white, high yield, high pvA, high Zn, high Lysine and tryp, tolerance to drought, low N, heat and low soil pH stresses and tolerance to MSV, GLS, TLB and cob rot);Nice to have traits (MLN, FAW, Downy mildew, aflatoxin, rust, organoleptic test, bioavailability, suitability for value-added products).
