Maize Inbred PH4D9G Breeding Acceleration
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Solution Overview
Problem
The development of new maize varieties is a time-consuming process that takes six to twelve years, and there is a continuous need for stable, high-yielding maize varieties with improved traits such as disease resistance, drought tolerance, and better agronomic characteristics.
Innovation Solution
A novel maize variety, PH4D9G, is developed through careful breeding and selection, incorporating traits like male sterility, disease resistance, and improved agronomic characteristics, using techniques such as backcross conversion and genetic transformation, and processes for producing hybrid maize seeds by crossing PH4D9G with other maize varieties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding processes are used to develop new varieties with improved traits, then disease resistance and agronomic characteristics are improved, but the development time increases significantly (6-12 years)
Solution Approach 1:
The patent applies preliminary action by developing and maintaining a pre-characterized inbred maize line (PH4D9G) with known desirable traits including disease resistance, yield characteristics, and adaptability. This pre-developed genetic foundation allows breeders to skip lengthy breeding cycles and directly utilize the inbred line for hybrid production, significantly reducing development time while maintaining reliable disease resistance and agronomic performance
2Productivity
If multiple breeding cycles are performed to achieve stable high-yielding varieties, then yield and genetic stability are improved, but the complexity of the breeding program increases
Solution Approach 1:
The patent applies copying by creating a standardized, well-characterized inbred maize line (PH4D9G) that serves as a reproducible genetic template. This inbred line can be copied and propagated consistently across multiple breeding programs and locations, maintaining uniform yield performance and genetic stability without requiring complex, site-specific breeding cycles for each new variety development
3Stability of the object's composition
If traditional hybrid seed production methods are used, then genetic uniformity is achieved, but the time and effort required for crossing and seed production increases
Solution Approach 1:
The patent applies self-service by developing an inbred maize line (PH4D9G) with self-silking characteristics and controlled male fertility traits that facilitate automated or minimally assisted pollination processes. The line's inherent biological characteristics enable it to serve its own pollination needs or require minimal external intervention for hybrid seed production, reducing labor time and effort while maintaining genetic uniformity through controlled crossing
Data Source
AI summary
A novel maize variety designated PH4D9G and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH4D9G with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH4D9G 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 PH4D9G or a locus conversion of PH4D9G with another maize variety.