Plumsweet XII Interspecific Plum Tree Pollination and Fruit Quality
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Solution Overview
Problem
There is a need for a new variety of plum tree that is self-unfruitful, requiring cross-pollination, with fruit characteristics such as medium size, firm texture, and sweet flavor, which are not met by existing plum varieties like 'YUMMY®rosa'.
Innovation Solution
The development of the 'Plumsweet XII' variety, an interspecific plum tree resulting from cross-pollination between a red plum tree and apricot and plum-apricot hybrid trees, exhibiting self-unfruitfulness, medium size, firm and sweet fruit, and specific pomological characteristics like greenish-yellow freckling and dark red flesh color.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If self-unfruitfulness is implemented to require cross-pollination, then fruit quality and diversity are improved, but pollination complexity and management requirements increase
Solution Approach 1:
The patent introduces specific pollinator trees (apricot varieties or other plum varieties) as intermediary elements to facilitate cross-pollination. These intermediary trees are strategically planted among the self-unfruitful plum trees to ensure adequate pollen transfer, thereby maintaining fruit quality without requiring complex manual pollination management.
2Reliability
If cross-pollination is required for fruit production, then genetic diversity and flavor quality are improved, but the number of trees needed per acre increases
Solution Approach 1:
The patent applies local quality by strategically positioning pollinator trees in specific locations within the orchard where they can most effectively serve multiple fruit trees. Rather than uniformly distributing all trees, pollinators are placed at optimal intervals to maximize their pollination efficiency, reducing the overall number of trees needed while maintaining genetic diversity and flavor quality.
3Strength
If medium-sized firm fruit is produced for shipping, then shipping durability is improved, but fruit size and yield per tree are limited
Solution Approach 1:
The patent utilizes parameter changes by selecting and breeding for specific fruit characteristics including medium size, firm texture, and particular skin properties (greenish-yellow freckling, red flesh color). These parameter optimizations create fruit that balances shipping durability with acceptable yield, as the firm, medium-sized fruit withstands long-distance shipping while maintaining productive trees through proper pollination management.
Data Source
AI summary
The present invention relates to an interspecific tree and more particularly to a new and distinct variety broadly characterized by a medium size, moderately vigorous, hardy, and medium productive tree. Being self-unfruitful, the present variety requires cross pollination from an apricot, interspecific, or plum that blooms during the mid season. The fruit matures under the ecological conditions described during early July, with first picking on Jul. 7, 2007. The fruit is uniformly medium in size, mostly red with greenish yellow freckling in skin color, clingstone in type, oblate in shape, red in flesh color, very firm and crisp in texture, and outstanding in flavor.