Genetic advancements in maize: enhanced yield and resilience through era-specific breeding
This research investigates the genetic improvements in maize from 1940 to 2010, focusing on yield, pest resistance, and low-nitrogen tolerance. It aims to quantify enhancements due to breeding practices, exploring traits like heterosis, heritability, and genetic advance.
Overview
This research explores the genetic advancements in maize achieved through breeding efforts from 1940 to 2010. The study examines how breeding practices over these eras have enhanced maize yield, pest resistance, and tolerance to low-nitrogen conditions. It aims to demonstrate that modern maize varieties have benefited from improved genetic architecture, resulting in greater resilience and performance under both biotic and abiotic stresses.
Technical specifications
The research involves evaluating hybrids from each breeding era, specifically focusing on the following parameters:
- Yield and related traits: Quantifying the improvements in grain yield and associated agronomic traits over time.
- Heterosis and heritability: Assessing changes in heterosis levels and heritability of maize hybrids from different eras.
- Genetic advance: Evaluating the genetic progress made in terms of yield and trait improvements across eras, using statistical methods such as GA = (k⋅σp/√h2).
- Responses to stress factors: Analyzing the tolerance of maize to low-nitrogen conditions and insect pests.
Field trials will be conducted using a randomized complete block design (RCBD) to ensure robust data collection and analysis.
Technology readiness level
This research is at Technology Readiness Level 5, indicating that the concept has been validated in relevant environments. The project includes a comprehensive timeline and budget for germplasm selection, field trials, data collection, and analysis.
About Landmark University
Landmark University is a comprehensive private university in Omu-Aran, Nigeria, distinguished by an agrarian focus and an applied, mission-driven culture. Co-located teaching and research farms and field demonstration sites create living laboratories where companies can co-develop trials, validate products, and build workforce pipelines. An industry engagement model pairs faculty expertise with internships, practicums, and short courses, while community outreach programs connect partners to regional producers and supply-chain actors across Nigeria’s Middle Belt. Research is supported through competitive national programs and international development partners, with additional sponsorship from corporate collaborators. Dedicated offices for research, grants, and partnerships help scope projects, structure agreements, and steward IP and compliance for efficient collaboration.
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