Hybrid Corn CH396644 Segmentation Breeding
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Solution Overview
Problem
Corn breeding techniques face challenges in developing uniform hybrid plants with desirable traits such as high yield, disease resistance, and uniformity, as existing methods often result in unpredictable performance due to genetic non-uniformity among hybrid plants.
Innovation Solution
The development of the hybrid corn variety CH396644, which incorporates cytoplasmic or nuclear factors for male sterility and introduces specific genetic loci for traits like herbicide resistance, insect resistance, and disease resistance, using backcrossing and genetic transformation techniques to ensure consistent expression of desired characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to develop hybrid corn plants, then genetic diversity and desirable traits are improved, but genetic uniformity and predictability of performance deteriorate
Solution Approach 1:
The breeding program segments the development process into distinct phases: first developing homozygous inbred lines through self-pollination to ensure genetic uniformity, then crossing these standardized inbreds to produce uniform hybrid F1 plants. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
The patent applies preliminary action by extensively developing and characterizing inbred parental lines before hybridization. Multiple generations of self-pollination and selection are performed beforehand to ensure the inbreds are homozygous and stable, which then guarantees uniformity in the resulting hybrid plants.
2Stability of the object's composition
If self-pollination is used to develop inbred lines, then genetic uniformity is improved, but genetic diversity and adaptability deteriorate
Solution Approach 1:
The breeding program merges the advantages of self-pollination (genetic uniformity) with cross-pollination (genetic diversity) in a sequential manner. Inbred lines are developed through self-pollination to achieve homozygosity, then these uniform inbreds are crossed with other inbreds to generate diverse yet uniform hybrid F1 plants that combine the benefits of both pollination methods.
3Adaptability or versatility
If multiple breeding methods are used to combine desirable traits, then trait diversity is improved, but breeding complexity and time required deteriorate
Solution Approach 1:
The complex breeding program is segmented into distinct, manageable phases: inbred line development, hybridization, and hybrid evaluation. Each phase focuses on specific objectives and uses appropriate methods, reducing overall program complexity while achieving diverse trait combinations through systematic progression.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH396644. The invention thus relates to the plants, seeds and tissue cultures of the variety CH396644, and to methods for producing a corn plant produced by crossing a corn plant of variety CH396644 with itself or with another corn plant, such as a plant of another variety. The invention further relates to genetic complements of plants of variety CH396644.