Maize Inbred PHPDG Trait Introgression and Hybrid Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current maize breeding techniques face challenges in combining desirable traits such as disease resistance, drought tolerance, and uniformity, which are essential for efficient crop production and yield improvement.
Innovation Solution
Development of a novel maize variety, PHPDG, which is homozygous and can be used to produce hybrid seeds through crossing with other maize plants, incorporating traits like resistance to diseases and insects, and improved agronomic qualities, along with processes for backcross conversion and transformation to enhance specific traits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plant breeding is used to combine desirable traits, then disease resistance and yield improvement can be achieved, but the time required for breeding and the complexity of the breeding process increase
Solution Approach 1:
The patent utilizes pre-characterized inbred lines with known desirable traits (such as PHPDG with disease resistance) that have already undergone extensive breeding and selection. By starting with these pre-prepared genetic materials rather than beginning breeding from scratch, the time required to achieve reliable disease resistance and other desirable traits is significantly reduced while maintaining breeding effectiveness
2Productivity
If multiple desirable traits are combined in a single variety, then yield and resistance improve, but the uniformity of plant characteristics becomes more difficult to maintain
Solution Approach 1:
The patent combines multiple inbred lines, each contributing specific desirable traits (disease resistance, drought tolerance, uniformity), into a single hybrid variety. This merging approach allows the hybrid to inherit and express multiple beneficial traits simultaneously while maintaining uniformity through the heterosis effect, where the hybrid offspring exhibit greater uniformity and vigor than either parent line alone
Solution Approach 2:
The patent utilizes heterosis (hybrid vigor) to change the phenotypic parameters of the resulting variety. By crossing genetically diverse inbred lines, the hybrid offspring exhibit improved uniformity in plant characteristics such as germination, stand establishment, growth rate, and maturity, while simultaneously expressing multiple desirable traits from the parent lines
3Manufacturing precision
If inbred lines are used for hybrid production, then uniformity and yield potential improve, but the complexity of the breeding process and seed production increases
Solution Approach 1:
The patent divides the breeding process into distinct segments: developing and characterizing individual inbred lines with specific traits, then combining them in controlled crosses to produce hybrids. This segmentation allows each inbred line to be optimized independently for specific functions (such as PHPDG for disease resistance), simplifying the overall breeding process while achieving high uniformity and yield potential in the final hybrid variety
Data Source
AI summary
A novel maize variety designated PHPDG and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PHPDG with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PHPDG through backcross conversion and/or transformation, and to the maize seed, plant and plant part produced thereby. Hybrid maize seed, plant or plant part produced by crossing the variety PHPDG or a locus conversion of PHPDG with another maize variety.