Hybrid Corn CH101636 Breeding via 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 CH101636, which incorporates genetic modifications and cytoplasmic male sterility traits to prevent self-pollination, along with a process for crossing parent plants to produce hybrid seeds, utilizing genetic loci for traits like herbicide resistance and disease resistance, and tissue culture methods for regenerating plants with specific characteristics.

Engineering Contradictions & Design Principles

VSEngineering 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

Engineering Contradiction:

Improvehybrid seed production efficiencyVSAvoidgenetic stability

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent converts the harmful effect of self-pollination (which reduces hybrid seed production efficiency) into a beneficial system by introducing cytoplasmic male sterility. This genetic mechanism automatically prevents self-pollination while ensuring cross-pollination occurs, thereby improving hybrid seed production efficiency without compromising genetic stability through controlled breeding protocols

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The patent changes the pollination parameter from natural self-pollination to controlled cross-pollination by introducing male sterility traits. This parameter change transforms the breeding system, allowing for efficient hybrid seed production while maintaining genetic stability through the use of sterile parent lines that cannot self-pollinate

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If multiple desirable traits are combined in hybrid varieties, then crop performance is improved, but maintaining genetic stability becomes more difficult

Engineering Contradiction:

Improvedesirable traits combinationVSAvoidgenetic stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent segments the breeding process into distinct parental lines, each carrying specific desirable traits. By dividing the complex multi-trait combination into separate parental genomes that are subsequently crossed, the system maintains genetic stability within each parent line while achieving trait combination in the hybrid offspring

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies preliminary action by developing and stabilizing parental lines with specific traits before crossing. The male sterility trait is established in advance in one parent line, and other desirable traits are pre-selected and stabilized through breeding, ensuring that when crossing occurs, genetic stability is maintained while multiple traits are combined in the hybrid

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10791695B1Plants and seeds of hybrid corn variety CH101636

Publication Date: 2020.10.06 MONSANTO TECHNOLOGY LLC

AI summary

According to the invention, there is provided seed and plants of the hybrid corn variety designated CH101636. The invention thus relates to the plants, seeds and tissue cultures of the variety CH101636, and to methods for producing a corn plant produced by crossing a corn plant of variety CH101636 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 CH101636.