Maize Variety 166-048 Breeding Segmentation and Combining Ability
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Solution Overview
Problem
Current maize hybrid development struggles to combine multiple desirable traits such as pest resistance, heat and cold tolerance, drought tolerance, and higher yields in a single hybrid plant, while maintaining agronomic quality and uniformity.
Innovation Solution
The development of the new maize variety '166-048' which exhibits higher yields, lower harvest moisture levels, and broad general combining ability with Iowa Stiff Stalk Synthetic inbreds, along with methods for producing seeds and plants with added traits through crossing, backcrossing, and genetic transformation to introduce desirable characteristics like herbicide tolerance and disease resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple desirable traits are combined in a single hybrid plant, then pest resistance, heat and cold tolerance, drought tolerance, and yield are improved, but the complexity of hybrid development and breeding process increases
Solution Approach 1:
The breeding process is segmented into distinct phases: developing inbred lines with specific traits, testing their combining ability, and then creating hybrids. This segmentation allows systematic combination of multiple traits through controlled crosses of inbred lines that each carry specific desirable characteristics.
Solution Approach 2:
The patent develops inbred lines that serve multiple functions: they can be used as parental lines for hybrid production, tested for general combining ability with multiple partners, and selected for multiple traits simultaneously. This multi-functionality streamlines the breeding process while achieving complex trait combinations.
2Reliability
If multiple desirable traits are combined in a single hybrid plant, then disease resistance and stress tolerance are improved, but the time and resources required for evaluation and selection increase
Solution Approach 1:
The patent performs preliminary evaluation of inbred lines for disease resistance and stress tolerance traits before combining them in hybrids. This preliminary action identifies superior inbred lines early in the breeding process, reducing the time required for subsequent hybrid evaluation and selection.
Solution Approach 2:
The patent implements feedback mechanisms through evaluation of hybrid performance and general combining ability tests. This feedback allows breeders to identify which trait combinations are most successful and adjust the breeding program accordingly, reducing unnecessary evaluation time for inferior combinations.
3Productivity
If hybrids are developed with higher yields and lower harvest moisture levels, then productivity and moisture efficiency are improved, but the difficulty of detecting and measuring these traits increases
Solution Approach 1:
The patent replaces subjective visual estimation of yield and moisture traits with objective measurement systems. This substitution enables accurate detection and measurement of quantitative traits like yield and harvest moisture level, reducing the difficulty of evaluating these important performance parameters.
4Adaptability or versatility
If broad general combining ability is achieved with BSSS inbreds, then adaptability and versatility are improved, but the complexity of crossing and evaluation increases
Solution Approach 1:
The patent develops inbred lines that serve as universal parental lines with broad general combining ability across multiple BSSS inbred partners. This universality allows a single inbred line to be used in multiple hybrid combinations, reducing the overall complexity of the breeding program while maintaining high adaptability.
Data Source
AI summary
Herein provided is a new corn variety designated ‘166-048’ as well as the seeds, plants, plant parts, and derivatives of the new corn variety ‘166-048’. Also provided are tissue cultures of the new corn variety ‘166-048’ and the plants regenerated therefrom. Methods for producing corn plants by crossing the new corn variety ‘166-048’ with itself or another corn variety and plants produced by such methods are also provided. Hybrids of ‘166-048’ exhibit higher yields and lower harvest moistures than comparable hybrids, and ‘166-048’ has broad general combining ability with Iowa Stiff Stalk Synthetic (BSSS) inbreds.