Cornus Jefreb Cultivar Compact Habit Red Winter Stems
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Solution Overview
Problem
There is a need for a new cultivar of Cornus alba that exhibits a unique combination of compact growth habit, dense branching, and red winter stems, distinct from existing cultivars like 'Bailhalo', 'Minbat', and 'Cream Cracker', with stable asexual propagation characteristics.
Innovation Solution
The 'Jefreb' cultivar, discovered as a natural branch mutation of 'Bailhalo', features a compact, broad habit, narrow, densely branched stems that turn red in winter, and medium green foliage, achieved through successful asexual propagation by stem cuttings, distinguishing it from its parent and similar cultivars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If asexual propagation by stem cuttings is used, then stable characteristics and true-to-type reproduction are achieved, but propagation time and effort are increased
Solution Approach 1:
The invention takes preliminary action by discovering and selecting a natural branch mutation that already possesses the desired compact growth habit and dense branching characteristics. This pre-selected mutant 'Jefreb' is then propagated asexually, ensuring that the favorable traits are locked in from the beginning rather than requiring time-consuming selection processes in subsequent generations.
Solution Approach 2:
The invention uses asexual propagation by stem cuttings to create exact genetic copies of the selected mutant plant. This copying process ensures that the compact habit and dense branching characteristics are replicated true-to-type across multiple generations, maintaining characteristic stability without genetic variation.
2Shape
If compact growth habit with dense branching is selected, then ornamental value is improved, but plant height and spread are reduced
Solution Approach 1:
The invention applies local quality by concentrating branching density in specific areas of the plant. The 'Jefreb' cultivar exhibits dense branching primarily in the mid and upper sections of the stems, creating an ornamental focal point while maintaining a manageable overall plant size suitable for landscape applications.
Solution Approach 2:
The invention changes the parameter of branching density to create the desired compact habit. The mutant 'Jefreb' naturally exhibits increased branching frequency and reduced internode length compared to the parent cultivar 'Bailhalo', transforming the plant's overall architecture without requiring chemical or physical interventions.
Data Source
AI summary
A new cultivar of Cornus, ‘Jefreb’, that is characterized by its compact plant habit that is broader than it is tall, its stems that are narrow in diameter and densely branched, and red in color during the winter, and its foliage that is green in color.