Corn Variety I669334 Breeding for Genetic Uniformity
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Solution Overview
Problem
Corn breeding techniques face challenges in developing uniform corn hybrids with desirable traits such as high yield, disease resistance, and drought tolerance, as existing methods often result in unpredictable performance due to genetic non-uniformity among hybrid plants.
Innovation Solution
The development of a corn plant variety designated I669334, which includes genetic loci conferring traits like male sterility, herbicide tolerance, and disease resistance, achieved through backcrossing and genetic transformation techniques, ensuring a homogeneous population of inbred seeds and plants with specific desirable characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional breeding methods are used to develop corn hybrids, then breeding processes can be completed, but the resulting hybrid plants exhibit genetic non-uniformity and unpredictable performance
Solution Approach 1:
The patent applies preliminary action by developing and utilizing homozygous inbred lines as starting material before creating hybrids. The inbred lines are prepared in advance through multiple generations of self-pollination and selection, ensuring genetic uniformity and stability. This preliminary preparation of uniform inbred lines enables predictable and reliable hybrid performance, directly resolving the contradiction between genetic uniformity and performance predictability.
2Stability of the object's composition
If homozygous inbred plants are developed through self-pollination and selection, then genetic uniformity is achieved, but breeding time and complexity increase
Solution Approach 1:
The patent applies parameter changes by modifying the breeding parameters and selecting for specific desirable traits during the inbreeding process. By changing selection criteria and pollination parameters to favor uniformity and desired characteristics, the process achieves genetic uniformity more efficiently. This optimized parameter approach reduces the time required compared to conventional breeding methods.
3Adaptability or versatility
If cross-pollination is used to create hybrid plants, then genetic diversity is introduced, but uniformity and consistency among hybrids are reduced
Solution Approach 1:
The patent applies segmentation by dividing the breeding process into distinct phases: first developing uniform homozygous inbred lines through self-pollination, then using controlled cross-pollination between these uniform lines to create hybrids. This segmentation ensures that the cross-pollination step receives pre-prepared uniform materials, allowing genetic diversity to be introduced in a controlled manner that maintains hybrid uniformity and consistency.
Data Source
AI summary
According to the invention, there is provided seed and plants of the corn variety designated I669334. The invention thus relates to the plants, seeds and tissue cultures of the variety I669334, and to methods for producing a corn plant produced by crossing a corn plant of variety I669334 with itself or with another corn plant, such as a plant of another variety. The invention further relates to corn seeds and plants produced by crossing plants of variety I669334 with plants of another variety, such as another inbred line. The invention further relates to the inbred and hybrid genetic complements of plants of variety I669334.