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 Southern 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 Southern 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 Southern Africa under various management and environmental conditions.
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).
Each year, CIMMYT’s Global Maize Program conducts regional hybrid maize trials through a network of NARS and private seed companies in Asia under various management and environmental conditions (site summary attached in Appendix 4). These entries are compared evaluated against the performance of relevant checks from private seed companies and National Agricultural Research Programs. The objectives of these regional trials are: 1. To identify improved maize hybrids with higher yield and agronomic performance suitable for target product profiles; 2. To help partners identify improved maize hybrids that can potentially replace outdated, less productive, less resilient and/or less profitable commercial varieties in the market; 3. To monitor the breeding progress and enhance regional genetic gains in maize breeding and product development; and 4. To enrich and widen the genetic base of improved maize germplasm through germplasm exchange. Details of Regional Trials conducted by CIMMYT in Asia in 2017 and 2018, are based on the below Target Product Profiles. 1. Product profile 1 (Tropical Rainfed (with erratic/excess rainfall) (Appendix 2): Basic traits: Intermediate maturing, yellow, high yielding, tolerant to drought and waterlogging and resistant to TLB Nice-to-have / emerging traits: FSR, BLSB, FAW CRT-3-8 – Intermediate maturing elite pre-commercial hybrids regional trial (including external and internal checks). 2. Product profile 2 (Tropical Rainfed Dry)(Appendix 3): Basic traits: Intermediate maturing, yellow, high yielding, tolerant to drought and heat and resistance to FSR Nice-to-have / emerging traits: FAW, Charcoal Rot CRT-1&2 - Intermediate maturing elite pre-commercial hybrids regional trial (including external and internal checks).
Summarized results from the Regional Trials for CIMMYT Maize Hybrids in Southern Africa for 2016. These trials included: 1. EHYB16 – Early/extra-early maturing elite pre-released and released hybrids regional trial; 2. IHYB16 – Intermediate maturing elite pre-released and released hybrids regional trial; 3. LHYB16 – Late maturing elite pre-released and released hybrids regional trial; 4. WEHYB16 – Early maturing elite pre-released and released WEMA project hybrids regional trial; 5. WLHYB16 – Medium/Late maturing elite pre-released and released WEMA project hybrids regional trial; 6. ADVQPM16 – Advance elite pre-released and released quality protein maize (QPM) hybrids regional trial