Hybrid Maize X03B491 Locus Conversion for Uniformity
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Solution Overview
Problem
Current maize breeding techniques face challenges in combining desirable traits such as disease resistance, drought tolerance, and uniform plant characteristics in hybrid maize varieties, which affects yield and agronomic performance.
Innovation Solution
Development of the hybrid maize variety X03B491 through crossing proprietary Pioneer Hi-Bred International inbred varieties, incorporating locus conversion and transformation to introduce specific traits, resulting in a stable and high-yielding maize line with improved resistance and maturity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional plant breeding is used to combine desirable traits, then resistance to diseases and insects, resistance to heat and drought, reducing the time to crop maturity, greater yield, and better agronomic quality can be achieved, but uniformity of plant characteristics such as germination, stand establishment, growth rate, maturity, and plant and ear height becomes difficult to maintain
Solution Approach 1:
The patent applies parameter changes by modifying specific genetic parameters through locus conversion and transformation techniques. This allows precise alteration of trait expression while maintaining overall genetic uniformity. The method changes molecular parameters (DNA sequences, gene expressions) to achieve desired phenotypic uniformity while incorporating resistance traits.
2Productivity
If mechanical harvesting is implemented, then productivity is improved, but uniformity of plant characteristics becomes increasingly important and harder to achieve
Solution Approach 1:
The patent uses parameter changes to modify plant characteristics at the molecular level, enabling uniformity that supports mechanical harvesting. By changing genetic parameters through locus conversion, the plant traits are standardized to ensure uniform germination, stand establishment, growth rate, and maturity, which are critical for mechanical harvesting efficiency.
3Reliability
If locus conversion and transformation are used to introduce specific traits, then resistance and yield are improved, but genetic integrity must be maintained
Solution Approach 1:
The patent applies local quality by introducing specific traits at particular loci within the genome while maintaining the overall genetic integrity of the maize variety. Through locus conversion, only specific regions are modified to confer resistance traits, while the rest of the genome remains stable and true to the original variety's genetic makeup.
Solution Approach 2:
The patent uses parameter changes to precisely control genetic modifications through locus conversion and transformation. This allows introduction of resistance traits while maintaining genetic integrity by controlling the parameters of gene insertion, expression, and inheritance to ensure stability and reliability.
Data Source
AI summary
A novel maize variety designated X03B491 and seed, plants and plant parts thereof, produced by crossing Pioneer Hi-Bred International, Inc. proprietary inbred maize varieties. Methods for producing a maize plant that comprises crossing hybrid maize variety X03B491 with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into X03B491 through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. This invention relates to the maize variety X03B491, the seed, the plant produced from the seed, and variants, mutants, and minor modifications of maize variety X03B491. This invention further relates to methods for producing maize varieties derived from maize variety X03B491.