Prim 21 Sweet Cherry Tree Early Ripening and Firmness
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Solution Overview
Problem
Existing sweet cherry tree varieties lack a combination of early fruit ripening, distinct fruit shape, and balanced tree habit, with limited options for growers seeking high-quality fruits with specific ripening times and growth characteristics.
Innovation Solution
The development of the 'Prim 21' sweet cherry tree variety, resulting from planned breeding between 'PC 7144-7' and an unnamed cherry tree, which exhibits early ripening, heart-shaped fruit, and a medium to wide tree habit, offering a unique combination of characteristics including darker fruit color and improved firmness compared to parental and other known varieties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If existing sweet cherry tree varieties are used, then fruit production is maintained, but early ripening and distinct heart-shaped fruit characteristics are not achieved
Solution Approach 1:
The patent applies parameter changes by selectively breeding for specific genetic traits that control fruit ripening time and shape. The 'Prim 21' variety was developed through controlled pollination between parent varieties to achieve early ripening (8 days earlier than Tieton) and distinct heart-shaped fruit morphology, transforming the phenotypic parameters of the fruit
2Loss of time
If existing cherry varieties with early ripening are selected, then ripening time is reduced, but fruit firmness and color darkness are compromised
Solution Approach 1:
The patent merges beneficial traits from multiple parent varieties through controlled hybridization. The cross between 'PC 7144-7' (Tieton) and an unnamed unpatented cherry tree variety combined early ripening characteristics with enhanced fruit firmness and dark red coloration, achieving a synergistic effect that neither parent variety possessed alone
3Productivity
If existing cherry varieties are used, then fruit production is maintained, but a combination of medium-strong tree habit and wide spread is not achieved
Solution Approach 1:
The patent applies local quality by developing distinct characteristics in different parts of the plant. The 'Prim 21' variety exhibits a medium-strong overall tree habit with a wide spread canopy, while the fruit itself displays concentrated qualities of early ripening, dark color, and firm texture. This spatial differentiation of traits optimizes both tree architecture and fruit quality
Data Source
AI summary
A new and distinct variety of sweet cherry tree that produces heart-shaped and dark red colored fruits with very firm fruit flesh.