Pearlicious III Nectarine Tree Hybridization for Firmness and Shelf Life
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Solution Overview
Problem
There is a need for a new variety of nectarine tree that combines desirable traits such as large size, firm texture, and sweet flavor, while being adaptable to central California's climate and suitable for long-distance shipping, as existing varieties may not meet these criteria effectively.
Innovation Solution
The 'PEARLICIOUS III' nectarine tree is developed through hybridization using 'Rose Diamond' and an unnamed white freestone nectarine, exhibiting characteristics like globose shape, white flesh, and freestone type, which are distinct from other varieties, and is compatible with 'Nemaguard' rootstock for commercial production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If existing nectarine varieties are used for shipping, then some may have good firmness, but they lack the combination of large size, white flesh color, and extended shipping duration
Solution Approach 1:
The patent applies parameter changes by developing a new variety with specific physiological characteristics - white flesh color, high firmness, and extended shelf life - that differ from traditional yellow-fleshed nectarines. These parameter changes in fruit composition enable both larger size and extended shipping duration of 21 days.
2Strength
If nectarine varieties with firm texture are selected, then shipping quality improves, but flavor sweetness and adaptability to central California climate may be compromised
Solution Approach 1:
The patent achieves universality by creating a variety that simultaneously satisfies multiple requirements: firm texture for shipping, sweet flavor for consumer preference, and adaptability to central California's hot, dry climate. The tree shows vigorous growth and regular bearing in this specific climate zone while maintaining all desired fruit qualities.
3Reliability
If hybridization is used to combine desirable traits, then fruit quality improves, but the breeding process complexity and time increase
Solution Approach 1:
The patent applies self-service through embryo rescue techniques where the breeder performs the critical intervention of rescuing and germinating embryos, then allows the plants to self-develop and express their hybrid characteristics. The variety also exhibits self-fertility, eliminating the need for complex pollination management in production.
4Volume of moving object
If nectarine varieties are selected for large size, then market appeal improves, but shipping durability and firmness may deteriorate
Solution Approach 1:
The patent applies composite material principles by combining genetic traits from different parent varieties - 'Rose Diamond' nectarine and an unnamed white freestone nectarine - to create a composite fruit that exhibits both large size and high firmness. The resulting variety achieves uniform large size with consistent firm texture throughout the flesh.
Data Source
AI summary
The present invention relates to a new and distinct variety of nectarine tree, Prunus persica, broadly characterized by a large size, vigorous, hardy, self-fertile, productive and regular bearing tree. The fruit matures under the ecological conditions described in mid June, with first picking on Jun. 14, 2006. The fruit is uniformly large in size, sub-acidic and very sweet in flavor, globose in shape, freestone in type, very firm in texture, white in flesh color, and mostly red in skin color.