Hybrid Tomato Breeding for Multi-Disease Resistance and Beefsteak Fruit
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Solution Overview
Problem
Existing tomato varieties lack comprehensive resistance to multiple diseases such as Tomato Mosaic Virus strains 0 and 1, Fusarium oxysporum f. sp. lycopersici races 0 and 1, Fusarium oxysporum f. sp. radicis lycopersici, Cladosporium fulvum groups A, B, C, D, and E, and Tomato Brown Rugose Fruit Virus, as well as the ability to produce very large beefsteak fruits.
Innovation Solution
Development of a hybrid tomato variety 72-BF0636 RZ with genetic resistance to these diseases and the ability to produce large beefsteak fruits, deposited under NCIMB Accession No. 44614, utilizing breeding and genetic techniques to combine desirable traits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional tomato varieties are used, then cultivation is simple, but disease resistance is insufficient and yield is limited
Solution Approach 1:
The patent combines multiple disease resistance traits (ToMV, ToBRFV, Fol, For, Ff) and desirable phenotypic characteristics (large fruit size, uniform ripening, high yield) into a single hybrid variety through controlled crossing of parent lines. This merging of previously separate traits into one integrated variety resolves the contradiction by achieving comprehensive disease resistance and high yield without requiring multiple separate varieties or complex management practices.
Solution Approach 2:
The hybrid variety 72-BF0636 RZ is designed to perform multiple functions simultaneously: it provides resistance to multiple diseases (viral and fungal), produces large beefsteak fruits, maintains uniform ripening across the fruit set, and achieves high yield. This multi-functionality allows a single variety to replace multiple specialized varieties, simplifying cultivation while enhancing reliability through comprehensive trait integration.
2Reliability
If multiple disease resistances are integrated into one variety, then disease resistance improves, but breeding difficulty increases
Solution Approach 1:
The breeding program segmented the development into distinct phases: selection of parent lines with specific resistance traits, controlled crossing to combine traits, and systematic evaluation of progeny. By dividing the complex breeding process into manageable segments, the patent made the integration of multiple resistances achievable while maintaining breeding feasibility through structured approach.
Solution Approach 2:
The patent employed intermediate parent lines and testing programs as mediators between the final desired variety and the available germplasm. Intermediate varieties were developed that combined specific resistance traits, then used as parents to create the final hybrid. This intermediary approach simplified the breeding process by breaking down the complex integration into stepwise combinations of manageable traits.
3Manufacturing precision
If uniform ripening and large fruit size are achieved, then fruit quality improves, but genetic complexity increases
Solution Approach 1:
The patent applied local quality by ensuring uniform ripening specifically across the fruit set while maintaining the desired large fruit size. Through selection and breeding, it achieved localized uniformity in ripening timing and quality across all fruits, rather than requiring uniformity in all plant characteristics. This approach improved fruit quality through precise control of ripening uniformity without necessitating complete genetic uniformity across the entire plant.
Data Source
AI summary
The present invention relates to a Solanum lycopersicum seed designated 72-BF0636 RZ. The present invention also relates to a Solanum lycopersicum plant produced by growing the 72-BF0636 RZ seed. The invention further relates to methods for producing the tomato cultivar, represented by tomato variety 72-BF0636 RZ.