Vitex Bailtexone Cultivar Cold Hardiness and Compact Growth
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for a cold-hardy, ornamental cultivar of Vitex with purple foliage that can thrive in a wider range of USDA zones and exhibit distinct growth and flowering characteristics.
Innovation Solution
The development of the 'Bailtexone' cultivar, resulting from a controlled breeding program between Vitex trifolia 'Purpurea' and Vitex agnus-castus, which features a compact growth habit, olive green and light purple foliage, and violet flowers, achieved through asexual propagation using semi-hardwood stem cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a controlled breeding program is conducted between Vitex trifolia 'Purpurea' and Vitex agnus-castus, then cold hardiness is improved, but plant height increases excessively
Solution Approach 1:
The patent applies local quality by selecting for specific desirable traits (cold hardiness, compact growth habit, foliage color) while rejecting unwanted traits (excessive height) in the hybrid offspring. The breeding program focuses on local improvements in specific characteristics rather than uniform changes across all plant attributes.
Solution Approach 2:
The patent employs parameter changes by modifying key growth parameters through controlled hybridization. The cross between Vitex trifolia 'Purpurea' and Vitex agnus-castus produces offspring with altered height parameters, cold hardiness parameters, and foliage color parameters, achieving a balanced phenotype that combines benefits while avoiding extremes.
2Temperature
If a controlled breeding program is conducted between Vitex trifolia 'Purpurea' and Vitex agnus-castus, then cold hardiness is improved, but plant habit becomes less desirable
Solution Approach 1:
The patent applies local quality by selectively breeding for improved cold hardiness while maintaining or improving plant habit. The hybridization process targets specific local traits (cold tolerance) without sacrificing overall plant form, resulting in a cultivar that excels in both aspects.
Solution Approach 2:
The patent employs parameter changes by altering the cold hardiness parameter through hybridization while simultaneously optimizing the plant habit parameter. The breeding program adjusts multiple parameters concurrently to achieve a balanced improvement in both cold tolerance and aesthetic form.
3Stability of the object's composition
If semi-hardwood stem cuttings are used for asexual propagation, then characteristics are stabilized, but propagation time increases
Solution Approach 1:
The patent applies preliminary action by preparing semi-hardwood cuttings at the optimal stage of development before propagation. By selecting cuttings from semi-hardwood (partially matured) stems, the method ensures higher success rates and faster root development, reducing overall propagation time while maintaining genetic stability.
Solution Approach 2:
The patent employs parameter changes by optimizing the physiological state of cutting material (semi-hardwood stage) to balance propagation speed and success rate. This intermediate maturity stage provides the right combination of cellular activity for rapid rooting and structural stability for genetic fidelity.
Data Source
AI summary
A new cultivar of Vitex plant named ‘Bailtexone’ that is characterized by its compact, rounded to upright growth habit, its foliage that is olive green in color on the upper surface and light purple in color on the lower surface, its flowers that are violet in color.