Hybrid Corn CH010563 Breeding for Genetic Uniformity
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Solution Overview
Problem
Existing corn breeding techniques struggle to develop hybrids with uniformity and desirable traits such as higher yield, disease resistance, and improved agronomic qualities, while maintaining genetic stability and efficiency in hybrid production.
Innovation Solution
The development of the hybrid corn variety CH010563, which incorporates genetic modifications and cytoplasmic traits like male sterility, along with tissue cultures capable of regenerating plants with specific physiological and morphological characteristics, and the use of crossing techniques to produce hybrid seeds with enhanced traits like herbicide resistance and disease tolerance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional breeding methods are used to develop corn hybrids, then genetic diversity can be maintained, but achieving uniformity and consistent desirable traits across generations becomes difficult
Solution Approach 1:
The patent applies preliminary action by developing homozygous inbred parent lines through multiple generations of self-pollination before creating the hybrid. This preliminary inbreeding ensures genetic uniformity is established in the parents, which then translates to consistent uniformity in the hybrid offspring, solving the uniformity problem while managing complexity through systematic preparation
Solution Approach 2:
The breeding program is segmented into distinct components: developing inbred line A, developing inbred line B, and crossing them to produce hybrid F1. This segmentation allows each component to be optimized independently for uniformity, with the cross combining their benefits while maintaining consistent trait expression across the hybrid population
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred lines, then genetic stability is achieved, but the time required to develop pure-breeding varieties increases significantly
Solution Approach 1:
The patent utilizes self-service through self-pollination of inbred lines to maintain and propagate their genetic composition. Once the inbred lines are developed through selfing, they can self-pollinate to produce subsequent generations without requiring external intervention, thereby maintaining genetic stability while reducing the time investment needed for ongoing line maintenance
Solution Approach 2:
The patent applies parameter changes by transitioning from cross-pollination to self-pollination during specific breeding stages. This change in the pollination parameter enables the development of homozygous inbred lines with stable genetic composition, accepting the time investment as necessary to achieve the desired genetic parameter state
3Productivity
If cross-pollination techniques are employed to produce hybrid seeds, then desirable hybrid traits are achieved, but preventing unwanted self-pollination and maintaining genetic purity becomes more difficult
Solution Approach 1:
The patent applies taking out by physically removing the tassel (male flowering structure) from the female parent plants during the hybrid seed production process. This extraction of the male reproductive capability from the female parent prevents self-pollination and ensures that only cross-pollinated seeds are produced, thereby maintaining genetic purity while enabling efficient hybrid seed production
Solution Approach 2:
The patent uses male sterility as an intermediary mechanism to control pollination. By employing cytoplasmic male sterility or chemical sterilants in the female parent, the system creates an intermediate state where the female plant cannot self-pollinate but can still receive pollen from the male parent, ensuring genetic purity while facilitating hybrid seed production
Data Source
AI summary
According to the disclosure, there is provided seed and plants of the hybrid corn variety designated CH010563. The disclosure thus relates to the plants, seeds, and tissue cultures of the variety CH010563, and to methods for producing a corn plant produced by crossing a corn plant of variety CH010563 with itself or with another corn plant, such as a plant of another variety. The disclosure further relates to genetic complements of plants of variety CH010563.