Hybrid Corn CH010964 Breeding via Segmented Selfing and Transformation
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Solution Overview
Problem
Corn breeding techniques face challenges in developing uniform hybrid varieties with desirable traits such as high yield, disease resistance, and uniform germination due to genetic non-uniformity and unpredictability in cross-pollination, requiring the development of stable inbred plants and specific breeding methods.
Innovation Solution
The development of the hybrid corn variety CH010964, which includes genetic loci for traits like male sterility, herbicide resistance, and disease resistance, using cytoplasmic-male sterility and genetic transformation techniques to introduce desired traits, and tissue culture methods for regenerating plants with consistent physiological and morphological characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to develop corn hybrids, then genetic diversity and trait combination are improved, but genetic non-uniformity and performance unpredictability occur
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred lines through self-pollination to ensure genetic uniformity, then crossing these standardized lines to introduce controlled genetic diversity. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
Homozygous inbred parent lines are developed and stabilized through multiple generations of self-pollination before the actual hybrid cross. This preliminary action ensures that the parental lines have uniform and predictable genetics, which then enables reliable and uniform hybrid performance when crossed.
2Manufacturing precision
If self-pollination is used to develop inbred lines, then genetic uniformity is improved, but breeding efficiency and time to develop hybrids increases
Solution Approach 1:
Corn plants are utilized for self-pollination to develop inbred lines, taking advantage of the plant's natural selfing capability. This self-service approach allows the plant to reproduce true-breeding lines without requiring external intervention, thereby maintaining genetic uniformity while streamlining the breeding process.
Solution Approach 2:
The breeding method dynamically transitions from self-pollination (for uniformity) to cross-pollination (for hybrid vigor). By flexibly switching between these two pollination modes at appropriate stages, the breeding program achieves both genetic uniformity in parents and high productivity in hybrids.
3Stability of the object's composition
If traditional breeding methods are used, then natural genetic variation is maintained, but introduction of specific desired traits such as herbicide resistance and disease resistance is limited
Solution Approach 1:
Recombinant DNA molecules serve as intermediaries to transfer specific desired traits (such as herbicide resistance and disease resistance) between organisms. These molecular intermediaries enable precise introduction of target traits while the overall breeding process maintains the stability and natural variation of the corn genome through conventional crossing and selection.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH010964. The invention thus relates to the plants, seeds and tissue cultures of the variety CH010964, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010964 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 CH010964.