Red BG Apple Tree Limb Sport Mutation Aesthetic Traits
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Solution Overview
Problem
The existing apple tree varieties, such as 'Granny Smith', lack distinctive red overcolor, larger pink blossoms, and darker stem and branch characteristics, which are desirable for aesthetic and market appeal.
Innovation Solution
The 'Red BG' apple tree variety, originating as a limb sport mutation of 'Granny Smith', exhibits a distinctive red overcolor, larger pink blossoms, and darker stem and branches, and is propagated through budding, maintaining its unique characteristics over successive generations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a new apple variety is developed with distinctive red overcolor and larger pink blossoms, then aesthetic appeal and marketability are improved, but the variety may have reduced resistance to diseases such as bitter pit
Solution Approach 1:
The patent applies local quality by selecting and propagating a limb sport mutation that exhibits desirable local characteristics (red overcolor, pink blossoms, darker stems) while maintaining the overall tree structure and productivity of the parent Granny Smith variety. This localized modification approach allows improvement of specific aesthetic traits without completely redesigning the entire variety, thereby balancing aesthetic appeal with maintained disease resistance characteristics.
2Stability of the object's composition
If the apple tree variety is propagated through budding to maintain true-to-type characteristics, then genetic consistency is improved, but the propagation process requires more time and resources compared to other methods
Solution Approach 1:
The patent employs budding propagation, a self-service method where the plant itself provides the propagating material (limb sports) and the propagation process leverages the plant's natural regenerative capabilities. This method maintains genetic consistency while being relatively efficient, as the limb sport mutations occur naturally and can be directly propagated without complex genetic manipulation procedures.
3Loss of time
If the apple tree blooms two days earlier than the parent variety, then harvest time is improved and market window is extended, but pollination synchronization with other varieties may be disrupted
Solution Approach 1:
The patent accepts and utilizes the parameter change in blooming time (two days earlier than Granny Smith) as a defining characteristic of the new variety. This temporal parameter shift extends the market window and allows for staggered harvest schedules. The variety maintains pollination compatibility through its ability to serve as both a pollen donor and recipient within the orchard ecosystem, working in conjunction with other apple varieties that bloom at different times.
Data Source
AI summary
‘Red BG’ is a limb sport mutation of ‘Granny Smith’. The fruit of ‘Red BG’ exhibits a distinctive red overcolor, and is further distinguishable from ‘Granny Smith’ by its larger blossoms and darker stem.