Melon Hybrid SVMF5675 Uniformity via Segmented Parent Lines
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Solution Overview
Problem
Current plant breeding methods face challenges in developing uniform melon varieties with desirable traits such as herbicide tolerance, insect resistance, and disease resistance, as they often result in unpredictable performance due to genetic non-uniformity in hybrid plants.
Innovation Solution
The development of melon hybrid SVMF5675 and inbred lines HAR-DV14-4214MO and HAR-DV14-4221AN, which involve creating a uniform population of plants with specific genetic loci through backcrossing, natural or induced mutations, or genetic transformation, to introduce traits like herbicide tolerance, insect resistance, and disease resistance, ensuring a uniform and stable phenotype.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pedigree breeding and recurrent selection are used to develop inbred plants, then genetic diversity is increased, but uniformity of the resulting hybrid population decreases leading to unpredictable performance
Solution Approach 1:
The breeding program segments the development process into distinct phases: first developing homozygous inbred parent lines through self-pollination and selection, then crossing these standardized parents to produce uniform F1 hybrid populations. 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 developing and stabilizing the parent inbred lines (HAR-DV14-4214MO and HAR-DV14-4221AN) through multiple generations of self-pollination and selection before crossing. This preliminary development ensures that when hybrids are produced, they inherit uniform, predictable traits from standardized parents, resolving the uniformity issue.
2Adaptability or versatility
If cross-pollination between heterozygous plants is performed, then genetic diversity is increased, but the resulting hybrid population becomes non-uniform with unpredictable performance
Solution Approach 1:
The patent employs homogeneity by using homozygous inbred parent lines that are genetically uniform within themselves. When these uniform parents cross-pollinate, they produce F1 hybrids that are genetically consistent and predictable. The homogeneity of the parents ensures reliability of the hybrid performance while still introducing beneficial genetic variation.
Solution Approach 2:
The breeding program creates standardized 'copies' of desirable genetic traits by developing inbred lines that are true-breeding and uniform. These standardized parent lines serve as reliable templates that consistently produce the same hybrid performance when crossed, ensuring predictability and reliability in commercial production.
3Stability of the object's composition
If self-pollination is used to develop homozygous inbred plants, then uniformity is achieved, but genetic diversity is reduced
Solution Approach 1:
The patent merges multiple inbred parent lines with different genetic backgrounds and desirable traits into a single hybrid combination. Each parent line is developed through self-pollination to achieve uniformity, but by combining multiple diverse parents (HAR-DV14-4214MO and HAR-DV14-4221AN), the program captures genetic diversity from different sources while maintaining uniformity within each parent and consistency in the hybrid.
Data Source
AI summary
The invention provides seed and plants of melon hybrid SVMF5675 and the parent lines thereof. The invention thus relates to the plants, seeds, and tissue cultures of melon hybrid SVMF5675 and the parent lines thereof and to methods for producing a melon plant produced by crossing such plants with themselves or with another melon 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.