PLUMSWEET VII Interspecific Plum Tree Cross-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 and requires cross-pollination, producing fruit that is firm, sweet, and suitable for long-distance shipping, with characteristics such as medium size, oblate shape, and red to pink flesh color, which existing plum varieties like 'YUMMYrosa' do not fully meet.
Innovation Solution
The development of the 'PLUMSWEET VII' interspecific plum tree, which is self-unfruitful and requires cross-pollination from an apricot or plum tree, producing fruit that is firm, sweet, and has a unique combination of red to pink flesh color with greenish-yellow freckling, and is compatible with 'Nemaguard' rootstock for commercial cultivation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the plum tree is self-unfruitful and requires cross-pollination, then the fruit quality can be improved through controlled pollination, but the complexity of cultivation increases due to the need for additional pollinating trees
Solution Approach 1:
The patent introduces an intermediary pollination system using apricot or plum trees with early-season blooms as pollinators. These intermediary trees provide the necessary pollen to enable cross-pollination of the PLUMSWEET VII variety, resolving the contradiction by providing a controlled pollination mechanism that improves fruit quality while managing cultivation complexity through selective use of compatible pollinating species.
2Reliability
If the fruit is designed to be firm and crisp for shipping, then the shipping quality improves, but the flavor sweetness may be reduced
Solution Approach 1:
The patent applies parameter changes by carefully controlling the maturation process and harvest timing to achieve the desired balance between firmness and sweetness. The fruit is harvested at optimal maturity when cellular structure provides firmness for shipping while sugar content reaches peak levels, resolving the contradiction through precise control of physiological parameters during fruit development.
3Productivity
If the tree is vigorous and productive, then the production increases, but the heat tolerance may be reduced
Solution Approach 1:
The patent applies local quality by selecting and cultivating PLUMSWEET VII in specific micro-environments with controlled heat exposure. The tree variety is locally adapted to regions with moderate climates, allowing vigorous productivity while maintaining heat tolerance through localized environmental selection and management practices.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The 'PLUMSWEET VII' tree provides a vigorous, productive, and heat-tolerant variety with fruit that maintains quality for extended periods, including during shipping, and is well-suited for the fresh market with good resistance to insects and diseases.
Implementation Method 1
the present variety requires cross pollination from an apricot, interspecific, or plum that blooms during the early season
Implementation Method 2
that is very firm and crisp in texture
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 large 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 early season. The fruit matures under the ecological conditions described during late June, with first picking on Jun. 26, 2006. The fruit is uniformly medium in size, mostly red with greenish yellow freckling in skin color, clingstone in type, oblate in shape, red to pink in flesh color.