RGLORS Apple Tree Sport Mutation Propagation
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Solution Overview
Problem
There is a need for a new and distinct variety of apple tree that exhibits unique fruit characteristics such as solid russet skin color, very crisp flesh, and a sour-sweet flavor with a sweet aftertaste, which are not adequately addressed by existing commercial varieties.
Innovation Solution
The development of a new apple tree variety, 'RGLORS', which originated as a naturally occurring sport mutation of 'Rosy Glow', characterized by its distinct fruit traits and propagated through grafting and budding onto M9 rootstock, ensuring consistent reproduction of these characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If existing commercial apple varieties are used, then general market acceptance is maintained, but unique fruit characteristics such as solid russet skin color, very crisp flesh, and sour-sweet flavor with sweet aftertaste are not achieved
Solution Approach 1:
The patent applies parameter changes by selecting and propagating a sport mutation that exhibits distinct physical and chemical parameters compared to the parental variety. The mutant branch produces fruit with solid russet skin color, very crisp flesh texture, and sour-sweet flavor profile, representing significant changes in color parameters, texture parameters, and flavor parameters that distinguish it from commercial varieties
2Ease of manufacture
If a new sport mutation variety is developed, then unique fruit characteristics are achieved, but consistent reproduction of these characteristics must be ensured
Solution Approach 1:
The patent applies copying by using asexual reproduction methods (grafting and budding) to create identical genetic copies of the sport mutation. By propagating the mutant branch through these vegetative means onto M9 rootstock, the unique fruit characteristics are faithfully replicated in subsequent generations, ensuring the new variety reproduces true to type and maintains consistency
3Adaptability or versatility
If apple trees are propagated through sexual reproduction, then genetic diversity is achieved, but consistent retention of distinct fruit characteristics across generations is not maintained
Solution Approach 1:
The patent eliminates sexual reproduction and instead uses asexual propagation methods (grafting and budding) to create genetic copies. This ensures the distinct fruit characteristics of the sport mutation are faithfully reproduced in all subsequent generations without the genetic recombination that would occur in sexual reproduction, thereby maintaining both stability and fidelity of the unique traits
Data Source
AI summary
A new and distinct Malus domestica Borkh. apple tree variety named ‘RGLORS’, particularly characterized by solid russet skin color of the fruit; very crispy flesh of the fruit; and sour to sweet flavor with a sweet aftertaste of the fruit.