Maize Inbred PH2RH1 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 PH2RH1, which involves crossing with another maize plant to introduce traits like male sterility, herbicide tolerance, and disease resistance through backcross conversion and genetic transformation, along with specific breeding processes to achieve desired characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding processes are used to combine desirable traits, then stable high-yielding varieties can be developed, but the process takes six to twelve years which is too 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 combining them. The inbred line PH2RH1 was developed through preliminary breeding work establishing a stable genetic base, which then serves as a platform for rapid variety development. This pre-prepared genetic material reduces the overall breeding timeline while maintaining stability.
Solution Approach 2:
The patent uses copying by creating multiple replicates and regenerants of the inbred line PH2RH1 to propagate the desired traits. The inbred line serves as a master copy that can be replicated across different breeding programs and environments, ensuring consistent transmission of desirable traits without requiring repeated lengthy breeding processes.
2Adaptability or versatility
If multiple desirable traits are combined in a single variety, then agronomic performance is improved, but the complexity of the breeding program increases
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct modules: developing inbred lines with specific traits (disease resistance, drought tolerance, yield), then combining them in controlled crosses. The inbred line PH2RH1 represents a segmented unit with consolidated desirable traits that can be independently evaluated and then combined with other trait-specific inbreds, simplifying the overall program complexity.
Solution Approach 2:
The inbred line PH2RH1 serves multiple functions: it provides disease resistance, drought tolerance, and yield potential simultaneously. This multi-functional inbred line can be used as a parent in multiple different hybrid combinations, making it a universal building block that reduces the number of separate breeding programs needed for different traits.
Data Source
AI summary
A novel maize variety designated PH2RH1 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH2RH1 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH2RH1 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 PH2RH1 or a locus conversion of PH2RH1 with another maize variety.