Hybrid Corn CH776341 Breeding via Segmentation and Intermediary Systems
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Solution Overview
Problem
Current corn breeding techniques face challenges in developing hybrid varieties that combine desirable traits such as high yield, disease resistance, and uniformity, while maintaining genetic stability and avoiding self-pollination, which limits the efficiency of hybrid seed production.
Innovation Solution
The development of the hybrid corn variety CH776341, which incorporates cytoplasmic or nuclear factors for male sterility and genetic loci conferring traits like herbicide resistance, disease resistance, and altered metabolism, along with a method for controlled cross-pollination using emasculation and self-incompatibility systems to prevent self-pollination and ensure genetic diversity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If self-pollination is used to maintain genetic stability, then true breeding progeny are produced, but hybrid seed production efficiency is limited
Solution Approach 1:
The corn population is divided into distinct homozygous inbred lines that are genetically separated and maintained through self-pollination, allowing controlled hybridization between specific lines while preventing random self-pollination events that would reduce hybrid seed production efficiency
Solution Approach 2:
Controlled cross-pollination systems act as intermediaries between the homozygous inbred lines, enabling deliberate hybrid seed production through managed pollen transfer while maintaining the genetic stability of each parent line through controlled self-pollination
2Adaptability or versatility
If cross-pollination is used to produce hybrid plants, then genetic diversity is increased, but maintaining uniformity becomes more difficult
Solution Approach 1:
Different regions of the corn population are maintained with different genetic qualities - homozygous inbred lines provide genetic diversity and adaptability, while the controlled hybridization process ensures uniformity in the F1 generation through consistent genetic composition across all hybrid plants
Solution Approach 2:
The breeding process controls the genetic parameters by crossing specific homozygous lines with known genotypes, ensuring that the hybrid offspring have uniform heterozygous composition while maintaining the genetic diversity introduced by the parent lines
3Productivity
If multiple desirable traits are combined in a single hybrid, then agronomic performance improves, but breeding complexity increases
Solution Approach 1:
Multiple desirable traits are merged into specific homozygous inbred lines through selective breeding, allowing these traits to be combined in hybrid offspring through controlled cross-pollination while managing breeding complexity by organizing traits within distinct parental lines
Solution Approach 2:
The homozygous inbred lines serve multiple functions - they provide genetic stability, carry specific desirable traits, and serve as parents for hybrid production, reducing overall breeding complexity by making the inbred lines multi-functional components of the breeding program
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH776341. The invention thus relates to the plants, seeds and tissue cultures of the variety CH776341, and to methods for producing a corn plant produced by crossing a corn plant of variety CH776341 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 CH776341.