Pepper Hybrid Breeding for Uniform Trait-Stable F1 Plants
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Solution Overview
Problem
Existing pepper breeding methods struggle to produce uniform hybrid plants with desirable traits such as herbicide tolerance, insect resistance, and disease resistance, often resulting in unpredictable performance due to genetic non-uniformity.
Innovation Solution
Development of pepper hybrid SVPH8928 and its parent lines SLR-8T20-6755 and SLR-8T18-6570, incorporating specific genetic loci through techniques like genome editing and backcrossing to introduce traits like herbicide tolerance, insect resistance, and disease resistance, ensuring a uniform and stable population of plants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional breeding methods are used to develop pepper varieties, then diverse traits can be combined, but the resulting hybrid plants show genetic non-uniformity and unpredictable performance
Solution Approach 1:
The patent segments the breeding process into distinct phases: developing homozygous inbred parent lines through repeated selfing, then crossing these uniform parents to produce uniform F1 hybrids. This segmentation ensures genetic uniformity within each parent line, which translates to predictable hybrid performance while maintaining the ability to combine diverse traits from different parent lines.
Solution Approach 2:
The patent applies preliminary action by extensively pre-selecting and stabilizing parent lines through multiple generations of selfing and selection before crossing. The parent lines are developed to be homozygous and uniform prior to hybridization, ensuring that the resulting F1 hybrids will exhibit consistent and predictable performance. This preliminary stabilization of parental genetics is crucial for achieving reliable hybrid uniformity.
2Stability of the object's composition
If homozygous inbred plants are developed through repeated selfing, then uniform true-breeding progeny are produced, but the breeding process requires multiple generations and extensive time
Solution Approach 1:
The patent utilizes self-service by employing repeated self-pollination of selected plants across multiple generations. Each plant serves its own breeding purpose by selfing to produce progeny that are progressively more homozygous and uniform. This self-service approach to generating homozygous lines, while time-consuming, ensures high genetic uniformity without requiring complex external intervention for each generation.
3Adaptability or versatility
If diverse genetic backgrounds are combined into breeding pools, then new lines with novel traits can be derived, but the resulting populations exhibit genetic variability that reduces uniformity
Solution Approach 1:
The patent segments the diverse breeding pool into distinct homozygous inbred lines through repeated selfing and selection. Each inbred line represents a uniform genetic entity despite originating from a diverse pool. By crossing these segmented, uniform lines rather than working with the diverse pool directly, the patent achieves both the benefit of genetic diversity (through different parent line combinations) and population uniformity (through homozygous, true-breeding parents producing consistent F1 hybrids).
Data Source
AI summary
The invention provides seeds and plants of pepper hybrid SVPH8928, pepper line SLR-8T20-6755, and pepper line SLR-8T18-6570. The invention thus relates to the plants, seeds, plant parts, and tissue cultures of pepper hybrid SVPH8928, pepper line SLR-8T20-6755, and pepper line SLR-8T18-6570 and to methods for producing a pepper plant produced by crossing such plants with themselves or with another plant, such as a pepper plant of another genotype. The invention further relates to seeds and plants produced by such crossing. The invention further relates to plants, seeds, plant parts, and tissue cultures of pepper hybrid pepper hybrid SVPH8928, pepper line SLR-8T20-6755, and pepper line SLR-8T18-6570 comprising introduced beneficial or desirable traits.