Plumred VIII Interspecific Tree Cross-Pollination System
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Solution Overview
Problem
Existing plum tree varieties face challenges in producing fruit that is both large in size and has desirable color, texture, and flavor characteristics, while also being self-unfruitful and requiring cross-pollination, which complicates commercial cultivation and shipping.
Innovation Solution
The development of the 'Plumred VIII' variety, which is a medium-sized, vigorous, and productive interspecific tree that is self-unfruitful but requires cross-pollination, producing large, deep red, clingstone fruit with excellent flavor and texture, and is compatible with 'Nemaguard' rootstock for stable growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing plum tree varieties are used, then fruit production is achieved, but fruit size and quality characteristics are limited
Solution Approach 1:
The patent introduces a specific cross-pollination system using bee hives as intermediaries between different plum tree varieties. The bee hives facilitate pollen transfer between the '19P442' seed parent and apricot/intersspecific hybrid pollen sources, enabling the production of hybrid seeds that combine desirable traits of large fruit size with controlled pollination requirements.
2Reliability
If cross-pollination is required for fruit production, then genetic diversity and fruit quality are improved, but cultivation complexity increases
Solution Approach 1:
The patent implements preliminary action by pre-positioning bee hives within screen houses covering the plum trees before blooming season begins. The bouquets of apricot and intersspecific hybrid flowers are placed in buckets near the trees in advance, ensuring that pollinators are already present and active when the plum trees bloom, thereby simplifying the management of cross-pollination requirements.
3Quantity of substance
If fruit matures later in the season, then larger fruit size is achieved, but shipping window and market availability are reduced
Solution Approach 1:
The patent achieves a balance between fruit size and maturity timing by controlling the cross-pollination process and selecting specific parent varieties. The hybrid offspring inherit traits that allow for extended development time to achieve large size while maintaining a maturity schedule that allows for commercial harvesting in mid-August, optimizing both size and market timing.
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, vigorous, hardy, and productive tree. Being self-unfruitful, the present variety requires cross pollination from an apricot, interspecific, or plum that blooms during the mid to late season. The present variety produces a moderately heavy bloom, but is pollen deficient and should have pollinators grafted in the center of the tree to entice good bee activity for sufficient pollination. The fruit matures under the ecological conditions described during mid August, with first picking on Aug. 19, 2011. The fruit is uniformly medium to large in size, deep red in skin color, clingstone in type, globose in shape, nearly full red in flesh color, firm and crisp in texture, and excellent in flavor.