Maize Inbred PH4DPN Breeding Acceleration
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
A novel maize variety, PH4DPN, is developed through careful breeding and selection, incorporating traits like male sterility, disease resistance, and drought tolerance, achieved through backcross conversion, genetic manipulation, and transformation, allowing for the creation of hybrid seeds with enhanced agronomic characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to develop new maize varieties, then desirable traits such as disease resistance and drought tolerance can be combined, but the development process takes six to twelve years
Solution Approach 1:
The patent applies preliminary action by creating an inbred maize line (PH4DPN) with pre-established desirable traits including male sterility, disease resistance, and drought tolerance. This pre-prepared genetic foundation allows for rapid hybrid development without requiring lengthy traditional breeding processes, as the core traits are already consolidated in the inbred line before hybridization occurs.
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 merges multiple desirable traits including male sterility, disease resistance, and drought tolerance into a single inbred maize line (PH4DPN). This consolidation of traits into one genetic foundation simplifies subsequent breeding programs, as all these traits are already present in the inbred line and will be expressed in the hybrid offspring without requiring complex multi-generation selection programs.
Solution Approach 2:
The inbred maize line PH4DPN serves multiple functions: it provides male sterility for hybrid seed production, confers disease resistance, provides drought tolerance, and serves as a parental line for hybrid development. This multi-functionality reduces breeding program complexity by eliminating the need for separate lines or programs for each trait.
3Reliability
If male sterility is introduced to prevent self-pollination and ensure hybrid purity, then hybrid seed production is improved, but additional genetic manipulation steps are required
Solution Approach 1:
The patent employs cytoplasmic male sterility in the PH4DPN inbred line, which provides self-service by automatically preventing self-pollination without requiring human intervention for detasseling or other manual emasculation procedures. The male sterility is genetically determined and self-expressing, ensuring hybrid purity while simplifying the hybrid seed production process by eliminating labor-intensive manual operations.
Data Source
AI summary
A novel maize variety designated PH4DPN and seed, plants and plant parts thereof are provided. Methods for producing a maize plant comprise crossing maize variety PH4DPN with another maize plant are provided. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH4DPN 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 PH4DPN or a locus conversion of PH4DPN with another maize variety.