Hybrid Corn CH817100 Breeding Segmentation and Male Sterility
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Solution Overview
Problem
Corn breeding aims to combine desirable traits like yield, disease resistance, and uniformity, but existing methods face challenges in developing stable, uniform hybrid plants due to genetic non-uniformity and unpredictability in cross-pollination, requiring the development of homozygous inbred plants and complex breeding techniques.
Innovation Solution
The development of the hybrid corn variety CH817100, which includes a cytoplasmic or nuclear factor for male sterility to prevent self-pollination, along with specific genetic loci for traits like herbicide resistance and disease resistance, and the use of tissue culture 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 combine desirable traits, then genetic diversity and trait combination are improved, but genetic uniformity and predictability deteriorate
Solution Approach 1:
The breeding process is segmented into distinct phases: first developing homozygous inbred lines through self-pollination to achieve genetic uniformity, then crossing these standardized lines to combine desirable traits. This segmentation allows each phase to optimize for its specific goal without compromising the other.
Solution Approach 2:
Homozygous inbred parent plants are developed in advance through multiple generations of self-pollination and selection before the cross-pollination step. This preliminary action ensures genetic uniformity is established prior to trait combination, making the subsequent hybridization predictable and reliable.
2Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then genetic uniformity is improved, but breeding complexity and time required deteriorate
Solution Approach 1:
Self-pollination is utilized to allow plants to fertilize themselves, automatically achieving homozygosity without requiring external intervention for each pollination event. This self-service mechanism simplifies the breeding process despite the multiple generations required, as it eliminates the need for manual cross-pollination controls during the inbred line development phase.
3Productivity
If male sterility factors are introduced to prevent self-pollination, then cross-pollination efficiency is improved, but genetic stability deteriorates
Solution Approach 1:
The male fertility function is extracted or removed from the parent plants by introducing male sterility factors. This extraction prevents self-pollination and ensures cross-pollination occurs, while the sterility factor itself is a stable genetic element that can be controlled and tracked through the breeding program.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH817100. The invention thus relates to the plants, seeds and tissue cultures of the variety CH817100, and to methods for producing a corn plant produced by crossing a corn plant of variety CH817100 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 CH817100.