Inbred Corn Line G07-NPFF6309 Hybrid Seed Production
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Solution Overview
Problem
The development of inbred corn lines with desirable agronomic traits for hybrid maize production is challenging due to the need for specific regional adaptations and the complexity of genetic systems governing traits like yield, disease resistance, and environmental tolerance, which limits the uniformity and vigor of hybrid seeds.
Innovation Solution
The introduction of the inbred corn line G07-NPFF6309, which combines specific traits such as male sterility systems, transgenic genes for resistance, and modified starch traits, along with a method for producing hybrid seeds using tissue culture and marker-assisted breeding to enhance trait introduction and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If inbred corn lines are developed through traditional breeding methods, then genetic diversity and adaptability are improved, but uniformity and breeding efficiency deteriorate
Solution Approach 1:
The patent replaces traditional mechanical breeding methods (manual crossing, selection, and propagation) with molecular marker-assisted selection systems. Specific DNA markers are used to identify and select plants with desired traits, enabling precise control over genetic composition while maintaining uniformity across large populations of inbred lines
Solution Approach 2:
The patent uses molecular markers as copies or representations of specific genes and traits. By detecting marker patterns in DNA, breeders can identify plants carrying desired genetic characteristics without directly observing the physical traits, allowing for early-stage selection and more efficient breeding programs
2Reliability
If detasseling is performed manually to produce hybrid seed, then hybrid seed purity is improved, but labor cost and time consumption increase
Solution Approach 1:
The patent extracts or removes the need for manual detasseling by introducing cytoplasmic male sterility (CMS) into the seed parent inbred line. The CMS trait causes automatic male sterility, eliminating pollen production and thus removing the requirement for mechanical or manual detasseling operations while maintaining hybrid seed purity
Solution Approach 2:
The patent implements a self-service mechanism where the plant itself automatically prevents self-pollination through CMS-induced male sterility. The seed parent inbred line naturally produces no pollen, so no external intervention (detasseling) is needed to prevent contamination, allowing hybrid seed production to proceed without labor-intensive manual operations
3Ease of manufacture
If CMS systems are introduced to eliminate detasseling, then labor requirements are reduced, but agronomic performance deteriorates
Solution Approach 1:
The patent changes the genetic parameters of the CMS system by selecting and breeding inbred lines that carry specific CMS restorer genes. These restorer genes compensate for the agronomic deficiencies associated with traditional CMS, allowing the plant to maintain normal fertility and performance in the hybrid while the inbred parent remains sterile for hybridization purposes
Data Source
AI summary
Basically, this invention provides for an inbred corn line designated G07-NPFF6309, methods for producing a corn plant by crossing plants of the inbred line G07-NPFF6309 with plants of another corn plants. The invention relates to the various parts of inbred including culturable cells. This invention also relates to methods for introducing transgenic transgenes into inbred corn line G07-NPFF6309 and plants produced by said methods.