Maize Inbred PH2SW5 Breeding via Backcross Conversion
Find Innovative SolutionsGenerate Solutions
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 PH2SW5, 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 breeding processes to produce stable and high-yielding hybrids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional maize breeding processes are used to combine desirable traits, then stable and high-yielding hybrids can be developed, but the process takes six to twelve years which is time-consuming
Solution Approach 1:
The patent applies preliminary action by pre-establishing a recurrent parent inbred line with a comprehensive foundation of desirable traits (disease resistance, drought tolerance, yield potential) before initiating backcrossing programs. This pre-prepared genetic platform accelerates the breeding process by eliminating the need to build the foundation during each breeding cycle, thereby reducing the overall time while maintaining reliability
Solution Approach 2:
The patent uses backcrossing as an intermediary mechanism to efficiently transfer specific desirable traits from donor parents to the recurrent parent background. This intermediary process allows for the precise introduction of target traits while maintaining the stable genetic background of the recurrent parent, achieving both trait combination and stability faster than traditional methods
2Productivity
If multiple desirable traits are combined in a single variety, then agronomic performance and yield are improved, but the complexity of the breeding program increases
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct phases: (1) development of recurrent parent with core desirable traits, (2) backcrossing to introduce additional specific traits, and (3) selection and stabilization. This segmentation allows each phase to focus on specific objectives, reducing overall program complexity while achieving multiple trait combination
Solution Approach 2:
The patent creates a universal recurrent parent inbred line that serves multiple functions: it provides a stable genetic background, contributes to yield potential, offers disease resistance, and serves as the foundation for developing multiple different hybrids. This multi-functional recurrent parent reduces breeding program complexity by reusing the same foundation across multiple breeding projects
Data Source
AI summary
A novel maize variety designated PH2SW5 and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH2SW5 with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH2SW5 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 PH2SW5 or a locus conversion of PH2SW5 with another maize variety.