Sweet Ann Strawberry Plant High Yield Fruit Quality
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Solution Overview
Problem
Current strawberry varieties lack a combination of large, well-shaped, sweet-tasting fruit with high productivity and vigorous plant architecture, along with desirable traits like low runner production and excellent shelf life for fresh market sales.
Innovation Solution
The development of the 'Sweet Ann' strawberry variety, resulting from a controlled cross between '4A28' and '10B131', which exhibits large, conical fruit with excellent flavor, glossy medium red color, high productivity, and vigorous open architecture, achieved through asexual propagation and meristematic tissue cultivation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional strawberry varieties are used, then ease of cultivation is maintained, but fruit size, flavor quality, and productivity remain suboptimal
Solution Approach 1:
The patent applies preliminary action by conducting controlled crosses between selected parent plants ('4A28' and '10B131') in advance to develop the superior 'Sweet Ann' variety. The breeding program performed preliminary selection of parent plants with desirable traits, controlled pollination, and multi-generational testing before commercial deployment, thereby preparing the optimal variety beforehand to achieve high productivity and quality without complexity during commercial cultivation
Solution Approach 2:
The patent applies copying through asexual propagation methods (stolon propagation and meristem tissue culture) to produce multiple identical copies of the superior 'Sweet Ann' genotype. This allows the excellent fruit quality and high productivity traits to be replicated across large numbers of plants without genetic variation, maintaining consistent superior performance while avoiding the need to repeatedly perform complex breeding operations
2Volume of moving object
If strawberry varieties with large fruit size are selected, then market appeal improves, but runner production increases reducing field productivity
Solution Approach 1:
The patent applies local quality by creating a variety with differentiated characteristics in different parts of the plant: the fruit exhibits large size (4-6 grams), conical shape, and superior flavor quality, while the vegetative growth produces few runners. This localized optimization allows the fruit to have market-preferred large size while the overall plant maintains high field productivity through reduced runner production, resolving the contradiction between fruit size and field productivity
3Quantity of substance
If strawberry varieties with high sugar content are developed, then flavor quality improves, but fruit firmness and shelf life may deteriorate
Solution Approach 1:
The patent applies parameter changes by achieving an optimized balance between sugar content (11.0-13.2° Brix) and fruit firmness through controlled breeding. The 'Sweet Ann' variety maintains medium skin firmness and moderate texture that prevent collapse during shipping, while achieving high sugar content through selective crossing and environmental management. This parameter optimization allows the fruit to have excellent sweet flavor and maintain reliability during long-distance shipment and storage
Data Source
AI summary
A new and distinct variety of strawberry plant named ‘Sweet Ann.’ This new day-neutral strawberry variety is characterized by vigorous plants which produce high yields of large to very large, sweet fruit with an excellent flavor; well-shaped, long and conical fruit, having a glossy medium red exterior and medium red interior; and which plants maintain an open architecture.