Hybrid Corn CH011004 Male Sterility Breeding
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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 introduction of new genetic modifications and traits.
Innovation Solution
The development of the hybrid corn variety CH011004, which incorporates a cytoplasmic or nuclear factor for male sterility, genetic modifications conferring traits like herbicide resistance, and disease resistance, and the use of tissue culture for regenerating plants with specific physiological and morphological characteristics, along with a method for crossing parent plants to produce hybrid seeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If self-pollination is allowed in corn breeding, then genetic stability is maintained, but genetic diversity and introduction of new traits are limited
Solution Approach 1:
The patent applies preliminary action by pre-establishing male sterility in parent lines before crossing. This prevents self-pollination in advance, ensuring that only cross-pollination occurs between different parental lines, thereby guaranteeing genetic diversity in the hybrid offspring while maintaining controlled breeding conditions
Solution Approach 2:
The patent uses male sterility as an intermediary mechanism to control pollination. By introducing a sterile parent line that cannot self-pollinate, the system mediates the breeding process to ensure cross-pollination occurs, thus achieving both genetic stability through controlled crossing and genetic diversity through introduction of new parental genetics
2Reliability
If male sterility is introduced to prevent self-pollination, then cross-pollination control is improved, but breeding complexity increases
Solution Approach 1:
The patent applies self-service by utilizing the natural male sterility trait of the parent plant itself to prevent self-pollination. The sterile parent line inherently cannot produce functional pollen, so no external intervention or additional devices are needed to prevent selfing, thereby maintaining breeding simplicity while achieving reliable cross-pollination control
Solution Approach 2:
The patent changes the physiological parameter of pollen viability in the parent line by introducing male sterility. This parameter change fundamentally alters the pollination behavior from self-compatible to self-incompatible, improving cross-pollination control without requiring complex mechanical or chemical intervention systems
3Productivity
If hybrid varieties are developed through cross-breeding, then yield and resistance traits are improved, but time and resources for breeding increase
Solution Approach 1:
The patent applies preliminary action by pre-developing and maintaining pure lines with desired traits (such as disease resistance and high yield potential) before the hybridization step. This preliminary selection and stabilization of parental lines reduces the time needed for subsequent hybrid evaluation and accelerates the overall breeding process while ensuring the hybrid inherits superior traits
Solution Approach 2:
The patent segments the breeding process into distinct phases: developing pure lines with specific traits, inducing male sterility in one parent, and performing controlled cross-breeding. This segmentation allows parallel development of multiple parental lines with different traits, reducing overall breeding time through systematic organization of breeding activities
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH011004. The invention thus relates to the plants, seeds and tissue cultures of the variety CH011004, and to methods for producing a corn plant produced by crossing a corn plant of variety CH011004 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 CH011004.