Bean Line SVGZ1825 Breeding for Uniform Hybrid Performance
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Solution Overview
Problem
Current crop breeding methods face challenges in developing uniform and stable bean varieties with desirable traits such as high yield, disease resistance, and herbicide tolerance, as they often result in unpredictable performance due to genetic non-uniformity and require extensive generations of selfing and selection.
Innovation Solution
The development of the bean line SVGZ1825, which is a uniform and stable variety with specific physiological and morphological characteristics, achieved through genetic engineering techniques such as genome editing and backcrossing, incorporating traits like herbicide tolerance and disease resistance by introducing specific genetic loci, ensuring consistent performance across environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional breeding methods (pedigree breeding and recurrent selection) are used to develop bean varieties, then genetic diversity can be combined from multiple sources, but the resulting varieties show unpredictable performance due to genetic non-uniformity
Solution Approach 1:
The breeding process is segmented into distinct phases: developing separate homozygous inbred lines with specific traits, then crossing them to produce uniform F1 hybrids. This segmentation allows genetic diversity to be captured in the parental lines while ensuring uniformity in the commercial hybrid product.
Solution Approach 2:
The patent changes the genetic uniformity parameter by using repeated self-pollination to achieve homozygosity in parental lines, then using controlled cross-pollination to produce uniformly heterozygous F1 hybrids. This parameter change from mixed genetics to controlled homozygous/uniform heterozygous states resolves the contradiction between diversity and uniformity.
2Manufacturing precision
If repeated selfing and selection are performed to develop homozygous inbred lines, then uniform true-breeding progeny are produced, but the breeding process requires extensive time and generations
Solution Approach 1:
Homozygous inbred parental lines are developed in advance through repeated selfing and selection before the commercial hybrid production phase. This preliminary development of uniform parents allows the actual hybrid seed production to be completed in a single generation without requiring continued selfing, thus achieving genetic uniformity while minimizing time loss.
Solution Approach 2:
Once homozygous inbred lines are established, they serve as stable genetic copies that can be repeatedly used to produce identical F1 hybrid progeny. The parental lines act as master templates that can be propagated and used across multiple breeding cycles, reducing the need to repeat the lengthy selfing process.
3Adaptability or versatility
If cross-pollination is used to produce hybrid plants, then genetic variation is introduced, but the resulting population is non-uniform and performance is unpredictable
Solution Approach 1:
The patent applies different genetic strategies to different parts of the breeding program: homozygous inbred lines are developed with complete genetic uniformity for their respective parental roles, then these uniform parents are crossed to produce F1 hybrids with uniform heterozygosity. Each parental line maintains its specific genetic quality while the cross produces uniform hybrids, resolving the contradiction between variation and uniformity.
Data Source
AI summary
The invention provides seed and plants of the bean line SVGZ1825. The invention thus relates to the plants, seeds, and tissue cultures of bean line SVGZ1825 and to methods for producing a bean plant produced by crossing a plant of bean line SVGZ1825 with itself or with another bean 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 a plant of bean line SVGZ1825, including the pods and gametes of such plants.