Maize Inbred PH1DDG Breeding for Disease Resistance and Yield
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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 mechanical harvesting.
Innovation Solution
Development of a novel maize variety, PH1DDG, through selective breeding and genetic manipulation to introduce desired traits, including resistance to various stresses and improved agronomic characteristics, by crossing inbred lines and using backcross conversion and transformation processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional plant breeding methods are used to combine desirable traits, then disease resistance and drought tolerance can be improved, but the time required to develop new varieties and the complexity of the breeding process increase
Solution Approach 1:
The patent applies preliminary action by pre-screening and selecting parent inbred lines with specific desirable traits (disease resistance, drought tolerance, uniformity) before crossing. This preliminary selection of genetically superior parents accelerates the breeding process while ensuring the combined traits are achieved in the F1 hybrid generation without requiring extensive multi-generational breeding.
2Productivity
If multiple desirable traits are combined in a single variety, then agronomic quality and yield are improved, but the uniformity of plant characteristics becomes more difficult to maintain
Solution Approach 1:
The patent applies local quality by combining multiple desirable traits (disease resistance, drought tolerance, uniformity) from different parent inbred lines into a single F1 hybrid variety. Each parent line contributes specific local traits, and the hybrid combines these locally superior characteristics while maintaining overall uniformity through controlled crossbreeding of homozygous inbred parents, ensuring consistent plant characteristics across the population.
3Reliability
If selective breeding and backcross conversion are used to introduce desired traits, then resistance to stresses and agronomic characteristics are improved, but the device complexity and manufacturing precision requirements increase
Solution Approach 1:
The patent applies segmentation by dividing the breeding process into distinct stages: selecting parent inbreds with specific stress resistance traits, performing controlled crosses to produce F1 hybrids, and evaluating progeny for desired characteristics. This segmented approach to trait introduction through systematic backcross conversion reduces overall process complexity by breaking down the complex breeding program into manageable, sequential steps with clear selection criteria at each stage.
Data Source
AI summary
A novel maize variety designated PH1DDG and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH1DDG with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH 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 PH1DDG or a locus conversion of PH1DDG with another maize variety.