Homozygous Inbred Corn Line SYW-6SIDL159 for Uniform Hybrid Production
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Solution Overview
Problem
Current plant breeding methods face challenges in developing uniform varieties with desirable traits such as yield, resistance to insects and diseases, and environmental stress tolerance, as they often result in unpredictable performance due to genetic non-uniformity in hybrid plants.
Innovation Solution
The development of the corn line SYW-6SIDL159, which involves creating a homozygous inbred line with specific traits like herbicide tolerance, insect resistance, and disease resistance through genetic engineering techniques, including genome editing with engineered nucleases, and backcrossing, to produce uniform and stable hybrid plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods (pedigree breeding and recurrent selection) are used to develop inbred plants, then genetic diversity is increased through combining backgrounds from multiple sources, but the resulting hybrid plants exhibit genetic non-uniformity leading to unpredictable performance
Solution Approach 1:
The breeding process is segmented into distinct phases: developing homozygous inbred lines through self-pollination, then crossing these standardized lines to produce hybrids. This segmentation ensures that genetic diversity is introduced systematically through controlled crosses rather than through unpredictable segregation in traditional breeding populations.
Solution Approach 2:
Homozygous inbred lines are developed through multiple generations of self-pollination to achieve uniformity at all genetic loci. This homogeneity in the parental lines ensures that their hybrid progeny will have consistent, predictable performance characteristics, resolving the contradiction between genetic diversity and performance predictability.
2Stability of the object's composition
If self-pollination and selection over many generations are used to develop homozygous inbred plants, then uniformity and true breeding are achieved, but the breeding process requires multiple generations and extensive time
Solution Approach 1:
Homozygous inbred lines are developed and stabilized in advance before being used for hybrid production. This preliminary development of uniform parental lines allows the breeding program to skip lengthy segregation and selection phases in later generations, significantly reducing the overall breeding cycle time while maintaining genetic uniformity.
Solution Approach 2:
Once homozygous inbred lines are developed, they can be replicated and used repeatedly as parental lines for producing hybrid seeds. This copying approach eliminates the need to re-develop uniform lines for each hybrid production cycle, saving substantial time while maintaining consistent genetic uniformity across multiple production runs.
3Adaptability or versatility
If crosses are made between heterozygous plants at multiple loci, then genetic variation is introduced, but the resulting hybrid population is non-uniform with unpredictable performance
Solution Approach 1:
Instead of crossing heterozygous plants to generate variation (the traditional approach), the method inverts the logic by crossing homozygous inbred lines. This inversion ensures that all progeny receive identical alleles from each parent, guaranteeing uniformity. Genetic variation is then introduced through the deliberate selection of different inbred line combinations for crossing, maintaining both uniformity and adaptability.
Data Source
AI summary
The invention provides seed and plants of corn line SYW-6SIDL159. The invention thus relates to the plants, seeds, and tissue cultures of corn line SYW-6SIDL159 and to methods for producing a corn plant produced by crossing such plants with themselves or with another corn plant, such as a plant of another genotype. The invention further relates to seeds and plants produced by such crossing. The invention further relates to parts of such plants, including the fruit and gametes of such plants.