Maize Inbred PH47A5 Breeding Stability and Time
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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 from the initial 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 PH47A5, which involves crossing and genetic manipulation to incorporate traits like male sterility, disease resistance, and improved metabolic traits, using backcross conversion and transformation techniques, along with specific breeding processes to produce hybrid seeds and plants with enhanced characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding processes are used to develop new varieties with desirable traits, then the varieties achieve stability and high yield, but the development time becomes excessively long (6-12 years)
Solution Approach 1:
The patent applies preliminary action by pre-establishing a diverse germplasm base with known desirable traits before breeding begins. The PH47A5 inbred line was developed with pre-selected characteristics including disease resistance, stress tolerance, and agronomic quality, allowing subsequent hybrid development to proceed more rapidly while maintaining variety stability.
2Adaptability or versatility
If multiple desirable traits are combined in a single maize variety through traditional breeding, then the variety achieves improved performance, but the breeding process becomes increasingly complex and time-consuming
Solution Approach 1:
The patent applies segmentation by dividing the complex breeding process into distinct stages: first developing the PH47A5 inbred line with specific foundational traits, then using it as a parent in hybrid crosses to add complementary traits. This segmented approach allows systematic combination of multiple desirable traits while managing breeding process complexity through structured progression.
Data Source
AI summary
A novel maize variety designated PH47A5 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH47A5 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH47A5 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 PH47A5 or a locus conversion of PH47A5 with another maize variety.