Pepper Hybrid 9927864 Stabilization via Segmentation
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Solution Overview
Problem
Current plant breeding methods face challenges in developing uniform pepper varieties with desirable traits such as resistance to diseases, high yield, and adaptability, as they often result in unpredictable performance due to genetic non-uniformity in hybrid plants.
Innovation Solution
The development of pepper hybrid 9927864 and inbred lines SBR99-1209 and SBY28-1223, which are homozygous and exhibit specific desirable traits like resistance to Bacterial leaf spot, Tomato Spotted Wilt Virus, and Tobamo Virus, achieved through pedigree selection and genetic stabilization, allowing for the production of uniform and stable seed populations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If cross-pollination is used to combine desirable traits from different plant varieties, then genetic diversity and trait combination are improved, but uniformity and predictability of hybrid performance deteriorate
Solution Approach 1:
The patent applies preliminary action by first developing and stabilizing homozygous inbred lines through multiple generations of self-pollination and selection before creating the final hybrid cross. This preliminary development ensures that the parent lines are genetically uniform and stable, which then enables predictable and uniform hybrid performance. The inbred lines undergo extensive breeding programs to fix desirable traits before being used as parents, eliminating the uncertainty associated with crossing genetically variable plants.
2Reliability
If self-pollination is used to develop homozygous inbred plants, then uniformity and true-breeding consistency are improved, but genetic variation and adaptability deteriorate
Solution Approach 1:
The patent applies segmentation by dividing the breeding program into distinct phases: first developing separate homozygous inbred lines with specific desirable traits through self-pollination, then crossing these specialized lines to create the final hybrid. This segmentation allows each inbred line to be optimized for specific traits while maintaining uniformity, and the combination of multiple inbred lines provides the necessary genetic variation and adaptability in the final hybrid product.
3Adaptability or versatility
If broad-based breeding pools are used to combine genetic backgrounds, then adaptability and trait diversity are improved, but uniformity and breeding complexity deteriorate
Solution Approach 1:
The patent applies preliminary action by pre-establishing a set of homozygous inbred lines with known and stable genetic compositions before initiating the hybrid breeding program. These inbred lines serve as standardized building blocks that can be systematically crossed to produce hybrids with desired traits. This preliminary preparation simplifies the overall breeding program by providing a foundation of genetically uniform materials, reducing the complexity of managing diverse genetic backgrounds during the hybrid development phase.
Data Source
AI summary
The invention provides seed and plants of pepper hybrid 9927864 and the parent lines thereof. The invention thus relates to the plants, seeds and tissue cultures of pepper hybrid 9927864 and the parent lines thereof, and to methods for producing a pepper plant produced by crossing such plants with themselves or with another pepper 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.