Polar Pride Interspecific Tree Breeding for Large Fruit and White Flesh
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Solution Overview
Problem
Existing interspecific and nectarine tree varieties lack desirable traits such as large fruit size, attractive red skin color, and balanced flavor, with limited commercial options offering white flesh and high productivity.
Innovation Solution
Development of the 'Polar Pride' interspecific tree variety, resulting from asexual reproduction of Prunus persica var. nucipersica, Prunus salicina, and Prunus persica, which exhibits vigorous growth, regular fruiting, and large, high-quality fruit with red skin and white flesh, bred for improved size, maturity, and flavor balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If existing intersspecific and nectarine tree varieties are cultivated, then commercial production is achieved, but fruit size remains limited and skin color lacks attractiveness
Solution Approach 1:
The patent applies parameter changes by developing a new intersspecific variety that fundamentally alters fruit size parameters and skin color characteristics. The 'Polar Pride' variety achieves larger fruit volume and distinctive red skin coloration compared to existing varieties, representing a significant parameter change in fruit morphology and appearance.
2Quantity of substance
If existing nectarine varieties are cultivated, then production is maintained, but flesh color is limited to yellow and flavor balance is insufficient
Solution Approach 1:
The patent employs composite materials principles by creating an intersspecific hybrid that combines genetic traits from multiple Prunus species. The variety integrates characteristics from nectarine, plum, and peach ancestors to produce unique white flesh coloration and balanced flavor profile, representing a composite genetic material that achieves desired traits through hybridization.
3Productivity
If vigorous growth is achieved through breeding, then productivity improves, but tree size becomes large requiring more space
Solution Approach 1:
The patent applies dynamics principles by selecting for vigorous growth characteristics that enhance productivity while managing tree architecture. The 'Polar Pride' variety exhibits dynamic growth patterns with strong vigor that support high fruit production, and the breeding program optimizes the balance between growth rate and space requirements through selective propagation.
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. Tree with a vigorous, upright growth habit.2. Regular and productive bearer of large size fruit.3. Fruit with a high degree of attractive red skin color.4. Fruit with very good flavor and eating quality.5. Fruit with firm, white flesh.6. Fruit with good storage and handling quality.