Carolina Gold Pear Tree Russetted Fruit Mutation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for a new variety of pear tree that produces fruit with distinct russetted skin color and maintains quality and size comparable to or exceeding that of the 'Bartlett' pear tree, with a later harvesting date and improved storage and handling characteristics.
Innovation Solution
The 'Carolina Gold' pear tree variety, resulting from a natural mutation of a 'Bartlett' pear tree, is propagated using asexual reproduction and exhibits average to above-average vigor, upright growth, and produces fruit with a russetted skin that holds well on the tree, ripening 10 days to two weeks later than 'Bartlett' pears, with characteristics described in detail for pomological features.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a new pear variety is developed with distinct russetted skin color, then fruit appearance and market differentiation are improved, but breeding time and resource investment increase
Solution Approach 1:
The invention extracts and isolates the specific russetted skin color trait from natural mutations in pear trees. By identifying and propagating this specific phenotypic characteristic through asexual reproduction methods, the breeding process focuses on extracting only the desired appearance trait rather than developing entire new varieties through lengthy cross-breeding programs.
Solution Approach 2:
The invention uses asexual reproduction (grafting) to create exact genetic copies of the mutated tree bearing the russetted skin trait. This copying approach allows rapid propagation of the desired appearance characteristic without the time-consuming process of traditional sexual breeding and selection that would be required to stabilize the trait in new varieties.
2Productivity
If fruit harvesting is extended over a longer period, then market supply flexibility and farmer income stability are improved, but fruit quality consistency and storage requirements increase
Solution Approach 1:
The invention creates a dynamic harvesting system where the extended harvest period is managed through controlled orchard practices. The variety's natural late-ripening characteristic combined with proper pruning and canopy management allows fruit to mature progressively over time while maintaining consistent quality standards through monitoring and selective harvesting based on firmness and color development.
Solution Approach 2:
The invention employs preliminary orchard management actions including strategic pruning, canopy thinning, and nutrient management before the harvest period begins. These preliminary actions create optimal conditions for uniform fruit development and extended hang-time, ensuring that fruit harvested over the extended period maintains consistent quality without requiring excessive storage intervention.
3Volume of moving object
If fruit size is increased to meet market demands, then consumer appeal and price point are improved, but tree vigor requirements and nutrient demands increase
Solution Approach 1:
The invention achieves larger fruit size by changing key growth parameters including extended hang-time on the tree, optimized nutrient application schedules, and controlled water management. These parameter changes allow the tree to allocate resources more efficiently toward fruit enlargement rather than excessive vegetative growth, achieving marketable size with moderate nutrient inputs.
Solution Approach 2:
The invention employs periodic nutrient applications and canopy management practices that synchronize with the fruit development stages. Rather than continuous high-input feeding, the system uses targeted nutrient applications at critical growth periods (cell division, cell expansion, and maturation phases) to achieve large fruit size while minimizing overall nutrient demand and waste.
Data Source
AI summary
A new and distinct variety of pear tree Pyrus communis L and which is denominated varietally as ‘Carolina Gold’ and which produces a relatively large russetted colored pear which is mature for harvesting and shipment on or after August 29th under the ecological conditions prevailing near Phoenix, Oreg.