Hybrid Corn CH011099 Cytoplasmic Male Sterility Seed Production
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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 CH011099, which incorporates genetic modifications and cytoplasmic male sterility to prevent self-pollination, along with a process for crossing parent plants to produce seeds with enhanced traits like herbicide resistance, disease resistance, and improved agronomic characteristics, using techniques like genome editing and tissue culture regeneration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional corn breeding techniques are used to develop hybrid varieties, then genetic diversity and desirable traits can be combined, but self-pollination occurs which limits hybrid seed production efficiency
Solution Approach 1:
The patent applies preliminary anti-action by introducing cytoplasmic male sterility (CMS) into the female parent before crossing. This pre-established genetic mechanism prevents self-pollination by rendering the female parent male-sterile, thereby eliminating the harmful self-pollination effect before it can occur and ensuring 100% cross-pollination efficiency.
Solution Approach 2:
The patent uses cytoplasmic male sterility as an intermediary mechanism to control pollination. The CMS cytoplasm acts as a mediator that prevents self-pollination in the female parent while allowing controlled cross-pollination with the male parent, thus resolving the contradiction between preventing self-pollination and maintaining genetic stability.
2Productivity
If cytoplasmic male sterility is introduced to prevent self-pollination, then hybrid seed production efficiency improves, but the complexity of the breeding process increases
Solution Approach 1:
The patent applies self-service by utilizing the natural cytoplasmic male sterility mechanism that automatically prevents self-pollination without requiring external intervention. The CMS trait self-regulates the pollination process, eliminating the need for manual emasculation or other complex mechanical interventions, thereby reducing operational complexity despite the genetic modification.
Solution Approach 2:
The patent changes the genetic parameter of the female parent by introducing CMS, which fundamentally alters the pollination behavior from capable of self-pollination to obligate cross-pollination. This parameter change simplifies the breeding process by eliminating the need for manual self-pollination prevention while maintaining genetic stability.
3Adaptability or versatility
If multiple desirable traits are combined in a single hybrid variety, then agronomic quality and yield improve, but the difficulty of developing such hybrids increases
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct components: developing CMS-based female parents with specific traits, developing separate male parents with complementary traits, and then combining them through controlled crossing. This segmentation allows each parent line to be optimized independently for specific desirable traits, making the overall process of combining multiple traits more manageable and systematic.
Data Source
AI summary
According to the invention, there is provided seed and plants of the hybrid corn variety designated CH011099. The invention thus relates to the plants, seeds and tissue cultures of the variety CH011099, and to methods for producing a corn plant produced by crossing a corn plant of variety CH011099 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 CH011099.