Royal Marie Cherry Tree Breeding for Low Chilling and Large Fruit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cherry tree varieties face limitations in fruit size, maturity timing, chilling requirements, and productivity, with 'Bing' Cherry having high chilling needs and 'Minnie Royal' lacking in fruit size and early maturity.
Innovation Solution
A new cherry tree variety (Prunus avium) is developed through asexual reproduction, exhibiting larger fruit size, earlier maturity, lower chilling requirements, and improved productivity by crossing a proprietary seedling with 'Bing' and 'Minnie Royal', budded onto 'Mahaleb' Rootstock, resulting in a vigorous, regular-bearing tree with attractive red skin and firm flesh.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional cherry varieties like 'Bing' are used, then fruit quality is good, but chilling requirement is high
Solution Approach 1:
The patent combines multiple cherry varieties ('Bing' for fruit quality, 'Minnie Royal' for early maturity, and proprietary selections for disease resistance) through controlled crossing to create a new variety that integrates the desirable traits of all parent varieties, resolving the contradiction between maintaining fruit quality and reducing chilling requirements
Solution Approach 2:
The patent applies selective breeding to enhance specific local traits (early maturity, disease resistance, fruit size) while maintaining overall fruit quality, creating a variety with differentiated characteristics that address specific market needs without sacrificing general quality
2Loss of time
If early maturing varieties like 'Minnie Royal' are used, then maturity timing is early, but fruit size is small
Solution Approach 1:
The patent merges the early maturity trait from 'Minnie Royal' with the large fruit size trait from 'Bing' and other proprietary selections through hybridization, creating a new variety that achieves both early maturation and large fruit size simultaneously
3Productivity
If vigorous growth is promoted, then productivity is high, but tree size becomes large
Solution Approach 1:
The patent promotes vigorous local growth in productive zones (fruit-bearing branches) while controlling overall tree size through selective breeding and pruning practices, enabling high productivity within a manageable tree framework suitable for mechanical harvesting
Data Source
AI summary
A new and distinct variety of cherry tree (Prunus avium). The following features of the tree and its fruit are characterized with the tree budded on ‘Mahaleb’ Rootstock (non-patented), grown on Handford sandy loam soil with Storie Index rating 95, in USDA Hardiness Zone 9, near Modesto, Calif., with standard commercial fruit growing practices, such as pruning, thinning, spraying, irrigation and fertilization. Its novelty consist of the following combination of desirable features:1. Vigorous and upright tree growth.2. Early blooming with a low winter chilling requirement of approximately 500 hours at or below 45° F.3. Regular and productive bearer of large size fruit.4. Fruit maturing in the early season.5. Fruit with an attractive red skin color.6. Fruit with good flavor and eating quality.