Pepper Hybrid SV0972PB Uniformity via Segmentation
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Solution Overview
Problem
Current pepper breeding methods face challenges in developing uniform hybrid varieties with desirable traits such as resistance to diseases and environmental stress, as they often result in unpredictable performance due to genetic non-uniformity among hybrid plants.
Innovation Solution
The development of pepper hybrid SV0972PB and inbred lines SBR-E711418 and SBR-E711411, which are homozygous and uniform, incorporating specific genetic loci for traits like herbicide tolerance, insect resistance, and disease resistance through backcrossing and genetic transformation, ensuring consistent performance and resistance to bacterial leaf spot and Tomato Spotted Wilt Virus.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional pepper breeding methods are used to develop hybrid varieties, then genetic diversity is increased, but uniformity and predictability of hybrid performance deteriorate
Solution Approach 1:
The breeding program segments the development process into distinct phases: first developing homozygous inbred parent lines through repeated self-pollination and selection, then crossing these uniform parents to produce uniform F1 hybrids. This segmentation allows genetic diversity to be captured in the parent lines while ensuring uniformity in the commercial hybrid population.
Solution Approach 2:
The patent applies preliminary action by extensively pre-selecting and homozygizing parent lines before crossing. Multiple generations of self-pollination and phenotypic selection are performed beforehand to ensure parents are genetically uniform, which guarantees uniform hybrid performance without requiring complex controls during hybridization.
2Manufacturing precision
If self-pollination and selection over many generations are performed to develop homozygous lines, then uniformity of parent lines is improved, but time required for breeding increases
Solution Approach 1:
The breeding method utilizes self-service by employing self-pollination in pepper plants, which naturally self-fertilize. This eliminates the need for manual emasculation and cross-pollination operations, allowing multiple generations of homozygosity to be achieved with minimal human intervention and reduced time investment.
3Adaptability or versatility
If cross-pollination between heterozygous plants is performed, then genetic variability in hybrids is increased, but uniformity and predictability of hybrid performance deteriorate
Solution Approach 1:
The patent applies homogeneity by ensuring both parent lines are homozygous and genetically uniform before crossing. This uniformity in parents translates to uniformity in the F1 hybrid population, as all hybrids receive identical alleles from each parent, guaranteeing predictable and consistent performance across the entire hybrid population.
Data Source
AI summary
The invention provides seed and plants of pepper hybrid SV0972PB and the parent lines thereof. The invention thus relates to the plants, seeds and tissue cultures of pepper hybrid SV0972PB 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.