Maize Inbred ID3881 Breeding Segmentation for Yield and Uniformity
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Solution Overview
Problem
Corn breeding faces challenges in producing high-yielding, agronomically sound plants that are uniformly adapted across the U.S. Corn Belt, as regional growing conditions and specific issues like Gray Leaf Spot infection, cool temperatures, and soil pH levels require region-specific traits, and existing methods struggle to introduce desirable traits efficiently across broad regions.
Innovation Solution
The development of the maize variety ID3881, which includes a process for producing hybrid seeds by crossing ID3881 with other maize plants to introduce traits such as increased water stress resistance, waxy starch, male sterility, and disease resistance, using techniques like backcrossing and marker-assisted selection to ensure uniformity and adaptability across different Corn Belt regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If inbred lines are used to produce hybrid seeds, then uniformity and homogeneity of the inbred lines are maintained, but vigor and seed yield are reduced
Solution Approach 1:
The patent divides the breeding program into distinct segments: developing uniform inbred lines (Segment A) and then crossing them to produce hybrid seeds (Segment B). This segmentation allows each segment to be optimized independently - inbreds for uniformity and hybrids for vigor and yield.
Solution Approach 2:
The patent inverts the typical breeding approach by first creating uniform inbred lines through self-pollination, then using those inbreds as parents to produce hybrid seeds. This inversion allows the uniform inbreds to serve as stable genetic foundations while the hybrid generation captures the vigor boost.
2Productivity
If hybrid seeds are produced by crossing inbred lines, then vigor and seed yield are increased, but uniformity and homogeneity are reduced
Solution Approach 1:
The patent separates the breeding process into two distinct segments: creating uniform inbred lines (Segment A) and producing hybrid seeds (Segment B). This allows uniformity to be maintained in the inbred segment while vigor and yield are optimized in the hybrid segment.
Solution Approach 2:
The patent applies local quality by making different parts of the breeding program have different genetic characteristics - the inbred lines are made homozygous and uniform for stability, while the hybrid seeds are made heterozygous for vigor and yield potential.
3Reliability
If traditional breeding methods are used, then existing germplasm is maintained, but desirable traits cannot be introduced efficiently
Solution Approach 1:
The patent performs preliminary action by first developing and stabilizing uniform inbred lines with desirable traits before using them to produce hybrid seeds. This preliminary development of uniform inbreds with targeted traits allows efficient introduction of desirable characteristics into the breeding program.
Solution Approach 2:
The patent utilizes parameter changes by transitioning from homozygous inbred lines to heterozygous hybrid seeds, which changes the genetic parameter from uniformity to vigor. This parameter change enables the efficient introduction and expression of desirable traits through hybridization.
Data Source
AI summary
The present invention provides an inbred corn line designated ID3881, methods for producing a corn plant by crossing plants of the inbred line ID3881 with plants of another corn plant. The invention further encompasses all parts of inbred corn line ID3881, including culturable cells. Additionally provided herein are methods for introducing transgenes into inbred corn line ID3881, and plants produced according to these methods.