Galaval Apple Mutation Uniform Dark Purple-Brown Skin
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Solution Overview
Problem
There is a need for a new cultivar of apple tree Malus domestica that exhibits an intense dark purple-brown fruit skin color without defined stripes, differing from existing Gala-type varieties.
Innovation Solution
The 'Galaval' cultivar, resulting from a whole tree mutation of 'Galaxy', features an intense dark purple-brown overcolor with no defined stripes, characterized by its globose to flat shape and maintained through successive asexual propagation generations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If Gala-type varieties are used, then fruit production is achieved, but the fruit skin color displays defined stripes rather than intense uniform overcolor
Solution Approach 1:
The patent describes a spontaneous mutation in the 'Galaxy' apple variety that resulted in changed pigmentation parameters. The mutant tree produced fruit with intense dark purple-brown overcolor covering 95-100% of the skin surface, compared to the parent variety's 50-90% coverage with defined stripes. This represents a natural parameter change in the genetic expression of skin color pigmentation.
2Illumination intensity
If traditional Gala varieties are cultivated, then fruit is produced, but the overcolor intensity and coverage do not reach the intense dark purple-brown level with 95-100% coverage
Solution Approach 1:
The mutant variety exhibits changed pigmentation parameters with intense dark purple-brown overcolor (RHS 59A) covering 95-100% of the fruit skin, compared to traditional Gala varieties showing 50-90% coverage with lighter red coloring and defined stripes. The mutation resulted in increased anthocyanin pigment expression.
Solution Approach 2:
The patent documents that the mutant tree was propagated asexually through budding to create multiple identical copies that all exhibit the same intense overcolor characteristics. This ensures reliability and consistency of the color traits across generations, with all propagated trees showing the same 95-100% dark purple-brown overcolor coverage.
3Adaptability or versatility
If new cultivars are developed through mutation, then unique fruit characteristics are achieved, but breeding time and generation stability verification are required
Solution Approach 1:
The patent describes a spontaneous mutation that naturally occurred in the 'Galaxy' variety, producing fruit with intense dark purple-brown overcolor (RHS 59A) covering 95-100% of the skin surface. This natural parameter change eliminated the need for extensive artificial breeding programs, as the mutation itself provided the desired unique characteristics.
Solution Approach 2:
The mutant tree was propagated asexually through budding to create multiple identical copies, allowing rapid multiplication of the unique variant without requiring repeated cross-breeding experiments. This asexual propagation method confirmed genetic stability across generations while minimizing the time required for variety development and verification.
Data Source
AI summary
A new apple tree named ‘Galaval’ is described. ‘Galaval’ is a mutation of ‘Galaxy’ selected for its interesting over color intensity. Fruit of ‘Galaval’ is distinguished from fruit of ‘Galaxy’ and other Gala-type varieties by its intense dark purple-brown skin over color with no defined stripes.