Hybrid Corn CH987816 Cytoplasmic Male Sterility
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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 CH987816, which incorporates genetic modifications and cytoplasmic male sterility traits to prevent self-pollination, along with tissue culture methods for regenerating plants with specific physiological and morphological characteristics, enables the production of hybrid seeds with enhanced traits like herbicide resistance and improved agronomic qualities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional self-pollination breeding methods are used, then genetic stability is maintained, but hybrid seed production efficiency is limited due to self-pollination
Solution Approach 1:
The patent extracts and removes the self-pollination capability from the corn plant by introducing cytoplasmic male sterility traits. This prevents the plant from producing functional pollen, thereby eliminating self-pollination and enabling efficient hybrid seed production through controlled cross-pollination while maintaining genetic stability through the use of sterile cytoplasm lines.
Solution Approach 2:
The patent uses cytoplasmic male sterility as an intermediary mechanism to control pollination. The sterile cytoplasm acts as a mediator that prevents self-pollination while allowing controlled cross-pollination between different parental lines, thus improving hybrid seed production efficiency without compromising genetic stability.
2Adaptability or versatility
If multiple desirable traits are combined in hybrid varieties, then agronomic quality improves, but breeding complexity increases
Solution Approach 1:
The patent applies multi-functionality by developing hybrid corn varieties that simultaneously express multiple desirable traits including herbicide resistance, insect resistance, improved yield, and uniformity. The cytoplasmic male sterility system serves as a universal platform that enables controlled crossing while maintaining all these traits in the hybrid progeny.
Solution Approach 2:
The patent uses preliminary action by pre-establishing cytoplasmic male sterility in parental lines before crossing. This preliminary genetic modification simplifies the breeding process by automatically preventing self-pollination and ensuring controlled cross-pollination, thereby reducing breeding complexity while enabling combination of multiple desirable traits.
3Productivity
If cytoplasmic male sterility is introduced to prevent self-pollination, then hybrid seed production efficiency improves, but genetic uniformity challenges arise
Solution Approach 1:
The patent applies local quality by introducing cytoplasmic male sterility specifically in the parental lines used for hybrid seed production, while maintaining genetic uniformity in the resulting hybrid varieties. The sterility trait is localized to the parental generation and does not persist in the F1 hybrid progeny, ensuring both improved production efficiency and genetic uniformity in commercial varieties.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH987816. The invention thus relates to the plants, seeds and tissue cultures of the variety CH987816, and to methods for producing a corn plant produced by crossing a corn plant of variety CH987816 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 CH987816.