Sterile Crapemyrtle Cultivar Continuous Flowering
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Solution Overview
Problem
Existing crapemyrtle varieties often exhibit limited flowering duration, poor rebloom capacity, and susceptibility to environmental stress, resulting in inconsistent and short-lived flower displays.
Innovation Solution
The new cultivar 'WHIT IX' of Lagerstroemia indica features a unique, branched growth habit, ruby red flowers that remain showy without color change, and a sterile trait allowing continuous flowering and rebloom on old inflorescences, achieved through asexual reproduction and selection from a large seedling population.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If conventional crapemyrtle varieties are used, then they flower for a limited duration, but the flower display is short-lived and inconsistent
Solution Approach 1:
The patent describes a crapemyrtle variety that produces flowers continuously from late June until frost, with the ability to rebloom on old inflorescences. This continuous flowering action resolves the contradiction by maintaining both extended duration and consistent reliability of flower display, eliminating the short-lived and inconsistent nature of conventional varieties.
Solution Approach 2:
The patent identifies that the new variety differs from conventional crapemyrtles in several parameters including flowering duration, rebloom capacity, and sterility. By changing these biological parameters through selective breeding, the variety achieves both prolonged flowering duration and consistent flower display reliability.
2Productivity
If crapemyrtle varieties are selected for vigorous growth, then they may reach larger size, but they become more susceptible to environmental stress
Solution Approach 1:
The patent describes a crapemyrtle variety that maintains moderate vigor while exhibiting high resistance to drought and environmental stress. By optimizing the vigor parameter rather than maximizing it, the variety achieves a balance where sufficient productivity is maintained while stress susceptibility is reduced.
Solution Approach 2:
The patent notes that the new variety produces flowers that drop cleanly without lingering decay, and old inflorescences are replaced by new flower buds. This disposable approach to individual flowers while maintaining continuous production resolves the contradiction between growth vigor and stress resistance.
3Adaptability or versatility
If crapemyrtle seedlings are selected from a large population, then unique features may be found, but the selection process becomes more complex
Solution Approach 1:
The patent describes selecting from a block of about 14,000 seedlings and identifying a single unique plant with unusual characteristics. By segmenting the large population into individual evaluable units and establishing clear selection criteria, the complex selection process was managed systematically to discover the unique sterile variety.
Solution Approach 2:
The patent identifies that the new variety differs from conventional crapemyrtles in several parameters including flowering duration, rebloom capacity, and sterility. By changing these biological parameters through selective breeding, the variety achieves both prolonged flowering duration and consistent flower display reliability.
Data Source
AI summary
A new and distinct variety of crapemyrtle, Lagerstroemia indica, particularly distinguished by having a much branched, near globular growth habit, and a near constant show of sterile, ruby red flowers from bright crimson flower buds during the growing season. Because the plant is sterile, old flowers stay showy longer, and new flower buds form in the same positions as flowers that age and fall away. Inflorescences are only between 1.5 and 6 inches long but are produced in great numbers across the outer surface of the network of branches.