Maize Inbred PH4C87 Breeding via Preliminary Action and Segmentation
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Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process, taking six to twelve years, and existing technologies face challenges in combining desirable traits such as disease resistance, drought tolerance, and high yield in a stable and agronomically sound manner.
Innovation Solution
The introduction of the novel maize variety PH4C87, which involves crossing with other maize plants to introduce traits like male sterility, disease resistance, and improved agronomic characteristics through backcross conversion, genetic manipulation, and transformation, along with specific cultivation processes to ensure genetic homogeneity and hybrid vigor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding methods are used to combine desirable traits, then the resulting varieties have stable and agronomically sound characteristics, but the development process takes six to twelve years which is time-consuming
Solution Approach 1:
The patent applies preliminary action by pre-selecting and characterizing inbred lines with specific desirable traits (disease resistance, yield potential, stress tolerance) before crossing. This advance preparation of parental material with known characteristics accelerates the breeding process while maintaining reliability, as the parent lines are already optimized for specific functions rather than requiring extensive field testing during the breeding process
2Adaptability or versatility
If multiple desirable traits are combined in a single variety, then the variety has improved resistance to diseases and environmental stresses with high yield, but the complexity of the breeding program increases
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct functional components: disease resistance traits, yield traits, and stress tolerance traits are developed in separate inbred lines before being combined through crossing. This modular approach allows each trait category to be optimized independently, then assembled into comprehensive varieties, reducing the complexity of managing all traits simultaneously in a single breeding program
3Loss of time
If genetic manipulation and transformation are used to introduce traits, then the development time is reduced, but the complexity of the genetic material increases
Solution Approach 1:
The patent uses molecular markers as intermediaries to track and select for desired traits during breeding and transformation processes. These markers serve as detectable proxies for complex genetic traits, allowing breeders to efficiently select plants with the desired characteristics without directly manipulating or tracking the entire complex genetic material, thus reducing development time while managing genetic complexity through marker-assisted selection
Data Source
AI summary
A novel maize variety designated PH4C87 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH4C87 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH4C87 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 PH4C87 or a locus conversion of PH4C87 with another maize variety.