Maize Inbred PH47CA Breeding via Segmentation and Preliminary Action
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Solution Overview
Problem
The development of new maize varieties and hybrids is a time-consuming process, requiring six to twelve years from the first cross to delivering finished seed to farmers, and existing technologies face challenges in creating stable, high-yielding varieties with desirable traits such as disease resistance, drought tolerance, and improved agronomic characteristics.
Innovation Solution
The introduction of the novel maize variety PH47CA, which involves crossing and genetic manipulation to incorporate traits like male sterility, disease resistance, and improved agronomic characteristics, using backcross conversion and transformation techniques to introduce desired genes, and the use of cytoplasmic male sterility to control pollination and enhance hybrid seed production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to develop new maize varieties, then the varieties can be stable and high-yielding, but the development process takes six to twelve years
Solution Approach 1:
The patent applies preliminary action by pre-establishing inbred lines with desired traits through multiple generations of self-pollination and selection before the actual hybrid development. This allows the breeding program to start with ready-to-use parental lines rather than beginning from scratch, thereby reducing the overall development time while maintaining variety stability and yield performance.
Solution Approach 2:
The patent segments the breeding process into distinct phases: development of inbred lines, creation of hybrid combinations, and evaluation/selection. By segmenting this complex process and parallelizing the development of multiple inbred lines simultaneously, the patent reduces the sequential time required while ensuring each segment produces reliable, high-yielding results.
2Adaptability or versatility
If multiple desirable traits are combined in a single variety, then the variety becomes more versatile and productive, but the breeding complexity increases
Solution Approach 1:
The patent segments the combination of multiple desirable traits by developing different inbred lines, each specialized in specific traits (e.g., disease resistance, yield, adaptability). This segmentation allows complex trait combinations to be achieved through strategic hybridization of pre-specialized lines, reducing the overall breeding complexity compared to trying to combine all traits in a single line simultaneously.
Solution Approach 2:
The patent creates universal inbred lines that can serve as parental material for multiple different hybrid combinations. These inbred lines are designed with core desirable traits that make them versatile and applicable across different breeding programs, thereby reducing the need to develop entirely new lines for each trait combination and simplifying the overall breeding architecture.
Data Source
AI summary
A novel maize variety designated PH47CA and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH47CA with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH47CA 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 PH47CA or a locus conversion of PH47CA with another maize variety.