Crimson Rose Interspecific Tree Breeding for Fruit Quality
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Solution Overview
Problem
Existing interspecific tree varieties lack desirable fruit and tree characteristics such as consistent fruit production, attractive appearance, and good shipping and storage quality, particularly in terms of flesh color and maturity timing.
Innovation Solution
The development of the 'Crimson Rose' interspecific tree, resulting from crosses between Prunus salicina and Prunus armeniaca, which exhibits vigorous growth, regular fruit production, attractive red skin, firm red flesh, and improved maturity timing compared to existing varieties, achieved through asexual reproduction using the 'Nemaguard' Rootstock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing intersspecific tree varieties are used, then fruit production is achieved, but fruit quality characteristics such as flesh color, shipping quality, and storage quality are insufficient
Solution Approach 1:
The patent applies parameter changes by selecting and breeding trees with specific genetic parameters that produce fruit with red flesh color, attractive skin, and improved shipping quality. The 'Crimson Rose' variety represents a deliberate change in fruit quality parameters compared to existing varieties, achieving consistent red flesh color and enhanced appearance through controlled breeding parameters.
2Loss of time
If early maturing varieties are used, then fruit production timing is advanced, but fruit quality and flavor development are compromised
Solution Approach 1:
The patent resolves this contradiction by changing the maturity timing parameter while maintaining quality parameters. The 'Crimson Rose' variety matures approximately 30 days later than its seed parent and 25 days later than 'Flavor Fusion', yet achieves superior flavor and quality characteristics. This demonstrates a deliberate parameter change in the breeding program that decouples maturity timing from quality degradation.
3Productivity
If vigorous growth varieties are selected, then tree productivity is improved, but tree size and harvesting difficulty increase
Solution Approach 1:
The patent applies parameter changes by selecting trees with moderate vigor levels that optimize both productivity and manageability. The 'Crimson Rose' variety exhibits vigorous growth with upright habit and produces medium to large fruit, achieving high productivity while maintaining tree characteristics that facilitate harvesting operations through its growth pattern and fruit positioning.
Data Source
AI summary
A new and distinct variety of interspecific tree. The following features of the tree and its fruit are characterized with the tree budded on ‘Nemaguard’ Rootstock (non-patented), grown on Handford sandy loam soil with Storie Index rating 95, in USDA Hardiness Zone 9, near Modesto, Calif., with standard commercial fruit growing practices, such as pruning, thinning, spraying, irrigation and fertilization. Its novelty consist of the following combination of desirable features:1. Vigorous, upright tree growth.2. Fruit with attractive red skin and flesh color.3. Fruit with very good flavor and eating quality.4. Fruit with good handling and shipping quality.5. Fruit with an average Brix of 18.5°.6. Heavy and regular production of fruit.