Maize Inbred PH1CHD Breeding for Stress Resistance and Uniformity
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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, PH1CHD, through selective breeding and genetic manipulation, incorporating traits like drought resistance, disease resistance, and improved agronomic qualities, along with processes for producing hybrid seeds and plants with specific genetic characteristics.
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 achieved, but the time to crop maturity increases and uniformity of plant characteristics deteriorates
Solution Approach 1:
The patent employs preliminary action by pre-selecting and characterizing inbred lines with specific desirable traits (disease resistance, drought tolerance) before hybridization. The inbred PH1CHD and its parent lines were subjected to multiple generations of selective breeding and field testing to establish their stress resistance characteristics before being used in hybrid crosses, thereby accelerating the breeding process while maintaining trait reliability
2Reliability
If traditional plant breeding methods are used to combine desirable traits, then drought tolerance can be achieved, but uniformity of plant characteristics deteriorates
Solution Approach 1:
The patent applies segmentation by dividing the breeding process into distinct stages: developing separate inbred lines with specific traits (PHR1J for disease resistance, PHCA5 for other agronomic qualities), evaluating them independently for drought tolerance, and then combining them in hybridization. This segmented approach allows each parent line to be optimized for specific traits while the hybrid combines them with improved uniformity
3Productivity
If mechanical harvesting is implemented, then productivity increases, but uniformity of plant characteristics becomes more critical and harder to achieve through traditional breeding
Solution Approach 1:
The patent achieves universality by developing inbred PH1CHD with multiple desirable traits simultaneously - disease resistance, drought tolerance, and improved agronomic uniformity (plant height, ear height, maturity timing). This multi-functional inbred line can be used in hybrid combinations that satisfy both mechanical harvesting requirements and stress resistance needs, making the breeding system adaptable to diverse agricultural contexts
Data Source
AI summary
A novel maize variety designated PH1CHD and seed, plants and plant parts thereof. Methods for producing a maize plant that comprise crossing maize variety PH1CHD with another maize plant. Methods for producing a maize plant containing in its genetic material one or more traits introgressed into PH1CHD 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 PH1CHD or a locus conversion of PH1CHD with another maize variety.