Inbred Corn Line BU007 Breeding for Yield and Disease Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current corn breeding techniques face challenges in developing new inbred corn lines that maintain commercial competitiveness over time, requiring continuous efforts to improve yield, disease resistance, and adaptability, while also ensuring hybrid seed purity and reducing the need for protective chemicals.
Innovation Solution
The development of the inbred corn line BU007, which offers improved yield, early harvest, and enhanced resistance to various diseases and pests, along with methods for producing and treating seeds to increase resistance to stress conditions, and techniques for controlling male sterility to prevent self-pollination and ensure hybrid seed production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional inbreeding techniques are used to develop new inbred corn lines, then new genetic varieties can be created, but the vigor of the lines decreases and additional inbreeding merely increases seed production without improvement
Solution Approach 1:
The patent combines self-pollination and sib-pollination techniques in a structured breeding program. Inbred lines are developed through self-pollination to achieve homozygosity, then crossed with other inbreds to restore vigor through heterosis. This merging of inbreeding and outbreeding strategies allows continuous development of new genetic varieties while maintaining productivity.
Solution Approach 2:
The breeding program dynamically adjusts pollination strategies based on the generation and breeding objectives. Early generations use self-pollination for line development, while later stages use controlled cross-pollination for hybrid production. This dynamic approach allows the system to optimize both genetic diversity and vigor at different stages of the breeding process.
2Productivity
If inbred corn lines are developed for hybrid production, then hybrid vigor is restored, but hybrid seed production requires elimination of pollen from the female parent which increases process complexity
Solution Approach 1:
The patent employs cytoplasmic male sterility (CMS) where the female parent's cytoplasm naturally prevents pollen production. This self-service mechanism eliminates the need for manual or mechanical emasculation, as the plant's own genetic system performs the pollen elimination function required for hybrid seed production.
Solution Approach 2:
The patent changes the fertility parameter of the female parent through genetic selection for CMS traits. By selecting for cytoplasmic male sterility, the system transforms the female parent from a fertile state to a sterile state, simplifying hybrid seed production by eliminating the need for pollen removal operations.
3Reliability
If detasseling is performed to prevent self-pollination in hybrid seed production, then hybrid seed purity is maintained, but labor and time requirements increase
Solution Approach 1:
The patent uses cytoplasmic male sterility where the female parent's cytoplasm naturally prevents pollen production. This self-service mechanism eliminates the need for manual or mechanical emasculation, as the plant's own genetic system performs the pollen elimination function required for hybrid seed production.
Solution Approach 2:
The patent extracts the pollen production function from the female parent through genetic selection for CMS. By removing the male fertility trait from the female parent line, the system eliminates the need for detasseling operations while maintaining hybrid seed purity.
4Adaptability or versatility
If conventional breeding methods are used, then new inbred lines can be developed, but continuous improvement of yield and disease resistance requires ongoing breeding efforts
Solution Approach 1:
The patent incorporates disease resistance traits into inbred lines through preliminary breeding and selection before hybrid production. By pre-selecting for disease resistance in the inbred parent lines, the hybrid offspring inherit these resistant traits, allowing continuous improvement without extending the overall breeding cycle.
Solution Approach 2:
The patent combines multiple breeding objectives including yield improvement, disease resistance, and adaptability into a unified breeding program. By simultaneously selecting for multiple traits in the inbred lines before hybridization, the system achieves continuous improvement across multiple parameters without proportionally increasing breeding time.
Data Source
AI summary
An inbred corn line, designated BU007, the plants and seeds of the inbred corn line BU007, methods for producing a corn plant, either inbred or hybrid, produced by crossing the inbred corn line BU007 with itself or with another corn plant, and hybrid corn seeds and plants produced by crossing the inbred line BU007 with another corn line or plant and to methods for producing a corn plant containing in its genetic material one or more transgenes and to the transgenic corn plants produced by that method. This invention also relates to inbred corn lines derived from inbred corn line BU007, to methods for producing other inbred corn lines derived from inbred corn line BU007 and to the inbred corn lines derived by the use of those methods.