Inbred Corn Line XHD02LY Breeding Methods
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Solution Overview
Problem
The development of new inbred corn lines is a slow and costly process that requires expertise, and existing inbred parent corn lines lose commercial competitiveness over time, necessitating the creation of improved germplasm with enhanced yield, disease resistance, and trait technologies to maintain competitiveness.
Innovation Solution
The introduction of the inbred corn line XHD02LY, which is a yellow dent inbred corn line with specific physiological and morphological characteristics, along with methods for producing and breeding new inbred and hybrid corn plants using techniques such as self-pollination, sib-pollination, backcrossing, haploid breeding, and tissue culture to generate plants with desired traits like increased yield, disease resistance, and uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional inbreeding techniques (self-pollination and sib-pollination) are used to develop new inbred corn lines, then new germplasm with desirable traits can be obtained, but the process is slow and costly
Solution Approach 1:
The patent employs preliminary action by using rapid cycling breeding methods where multiple generations are advanced in a compressed timeframe. Field trials conducted across multiple locations and years (2008-2010) represent preliminary testing that accelerates the selection process, allowing breeders to identify superior lines faster than traditional single-location, single-year testing would permit.
Solution Approach 2:
The patent implements continuity of useful action through continuous field trials and evaluation across multiple seasons and locations. The breeding program maintained ongoing selection pressure and evaluation throughout 2008-2010, with continuous data collection on yield, disease resistance, and other traits, rather than intermittent testing that would extend the breeding timeline.
2Stability of the object's composition
If existing inbred parent corn lines are used continuously, then breeding programs maintain stability, but the lines lose commercial competitiveness over time
Solution Approach 1:
The patent applies parameter changes by systematically varying selection criteria and breeding parameters to capture improving genetic lines. The breeding program evaluated multiple parameters including yield, disease resistance, and adaptability across different environments, adjusting selection intensity and criteria based on performance data to identify lines that maintain genetic stability while improving commercial competitiveness.
Solution Approach 2:
The patent implements dynamics by creating a dynamic breeding program that continuously evaluates and updates parent line performance. Rather than static use of existing inbreds, the program actively monitored yield performance, disease resistance, and adaptability across multiple locations and years, dynamically adjusting which lines are advanced and used as parents based on current performance data.
3Measurement precision
If extensive field trials and multi-location testing are conducted to evaluate corn lines, then reliable selection of superior traits is achieved, but the breeding cost and complexity increase
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct phases and locations for systematic evaluation. Field trials were conducted at multiple separate locations (including Iowa State University farms and commercial farms) with specific evaluation phases for different traits, allowing precise measurement of yield, disease resistance, and adaptability while organizing complexity into manageable segments rather than monolithic testing.
Data Source
AI summary
An inbred corn line, designated XHD02LY, the plants and seeds of the inbred corn line XHD02LY, methods for producing a corn plant, either inbred or hybrid, produced by crossing the inbred corn line XHD02LY with itself or with another corn plant, and hybrid corn seeds and plants produced by crossing the inbred line XHD02LY with another corn line or plant and to methods for producing a corn plant containing in its genetic material one or more transgenes and to the transgenic corn plants produced by that method. This invention also relates to inbred corn lines derived from inbred corn line XHD02LY, to methods for producing other inbred corn lines derived from inbred corn line XHD02LY and to the inbred corn lines derived by the use of those methods.