SO 7 Apple Tree Whole Tree Mutation for Bright Red Fruit Coloration
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Solution Overview
Problem
The existing apple tree varieties do not exhibit a bright cherry red color over 80% to 90% of their fruit surface and bright red leaf petiole and mid-vein undersides, which are distinctive characteristics of the new variety 'SO 7', a whole tree mutation of 'Honeycrisp'.
Innovation Solution
The new variety 'SO 7' displays a bright cherry red color over 80% to 90% of its fruit surface and bright red leaf petiole and mid-vein undersides, differing from its parent and other varieties, and has been asexually reproduced through cleft grafting and chip budding, maintaining its unique characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If conventional apple tree varieties are used, then the fruit may have acceptable coloration, but the fruit will not exhibit bright cherry red color over 80% to 90% of its surface and bright red leaf petiole and mid-vein undersides
Solution Approach 1:
The patent describes a whole tree mutation that has undergone parameter changes in pigmentation expression, resulting in bright cherry red coloration over 80-90% of the fruit surface and bright red leaf petiole and mid-vein undersides, which are distinct quantitative and qualitative changes from the parent variety
2Reliability
If the new variety is reproduced through sexual reproduction, then genetic diversity may be achieved, but the unique coloration characteristics may not be maintained
Solution Approach 1:
The patent employs asexual reproduction methods including cleft grafting and chip budding to create copies of the original tree that faithfully replicate the unique coloration characteristics without the genetic recombination that would occur in sexual reproduction, thereby maintaining trait reliability
Solution Approach 2:
The mutation has been propagated through clonal reproduction techniques that preserve the genetic parameter changes responsible for the bright red coloration, ensuring that the distinctive characteristics are retained across multiple generations
3Adaptability or versatility
If the tree is grown on its own root, then rootstock-specific traits may be expressed, but the variety has not been tested in this configuration
Solution Approach 1:
The patent indicates the variety has been grafted onto various rootstocks including M.9, M.26, and other apple rootstocks, suggesting the mutation exhibits universal adaptability across different rootstock types while maintaining its distinctive fruit and foliage characteristics
Data Source
AI summary
A new and distinct variety of ‘Honeycrisp’ apple tree named ‘SO 7’ originating as a whole tree mutation. This new variety is unique from its parent in the brighter red, highly colored fruit and bright red coloration of the petiole underside extending to the leaf midvein in a majority of leaves.