Maize Inbred PH25VV Breeding Acceleration
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Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process that requires precise planning and efficient resource use, aiming to combine desirable traits such as disease resistance, drought tolerance, and high yield, while maintaining stability across various conditions and environments.
Innovation Solution
The development of a novel maize variety, PH25VV, through careful breeding and selection, incorporating traits like cytoplasmic male sterility, herbicide tolerance, insect resistance, and improved metabolic traits via backcross conversion and genetic transformation, allowing for the creation of stable, high-yielding maize plants suitable for diverse conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding methods are used to combine desirable traits, then the resulting varieties have improved agronomic characteristics and stability, but the breeding process takes 6-12 years and is time-consuming
Solution Approach 1:
The patent applies preliminary action by pre-selecting and characterizing inbred lines with specific desirable traits (disease resistance, drought tolerance, yield potential) before crossing. This advance preparation of parental lines with known characteristics accelerates the breeding process while maintaining reliability, as the parent selection is done systematically rather than through trial-and-error over multiple years
2Adaptability or versatility
If multiple desirable traits are combined in a single maize variety, then the variety has improved agronomic characteristics and yield, but the breeding program requires precise planning and efficient resource use with minimal changes in direction
Solution Approach 1:
The patent segments the breeding program into distinct phases: selecting inbred lines with specific traits, crossing them to create hybrids, and evaluating the resulting varieties. This segmentation allows each phase to be optimized independently, managing the complexity of combining multiple traits while achieving versatile agronomic characteristics
Solution Approach 2:
The patent applies local quality by selecting inbred lines that excel in specific local conditions or exhibit particular traits (e.g., disease resistance in one line, drought tolerance in another). This targeted approach to trait distribution across different parental lines simplifies the breeding program complexity while achieving versatile, adaptable hybrids
3Productivity
If new maize varieties are developed through extensive breeding, then the varieties have maximal yield over different conditions and environments, but the process requires six to twelve years from first cross to seed delivery
Solution Approach 1:
The patent uses preliminary action by pre-characterizing inbred lines for yield potential and environmental adaptability before crossing. This advance preparation allows faster development of high-yielding varieties, reducing the 6-12 year timeline while maintaining maximal yield capability across different conditions
Solution Approach 2:
The patent applies copying by using inbred lines as standardized, reproducible genetic sources. Once superior inbred lines are identified, they can be repeatedly crossed with other standardized lines to produce consistent, high-yielding hybrids, accelerating variety development while maintaining productivity
Data Source
AI summary
A novel maize variety designated PH25VV and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH25VV with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH25VV through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby are provided. Hybrid maize seed, plants or plant parts are produced by crossing the variety PH25VV or a locus conversion of PH25VV with another maize variety.