Lagerstroemia Lava Java Cultivar Breeding for Disease Resistance
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Solution Overview
Problem
Current cultivars of Lagerstroemia, or Crape Myrtle, lack distinct characteristics and resistance to diseases such as Cercospora leaf spot and powdery mildew, and have limited hardiness, making them less suitable for diverse environmental conditions and landscape use.
Innovation Solution
The development of the 'Lava Java' cultivar, which exhibits a dense, broadly-spread growth habit, glossy foliage, magenta-rose flowers, and resistance to Cercospora leaf spot and powdery mildew, with hardiness to at least USDA zone 6, achieved through open-pollinated seed collection and asexual propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current Lagerstroemia cultivars are used, then they have established growth habits and flower production, but they lack resistance to Cercospora leaf spot and powdery mildew diseases
Solution Approach 1:
The patent applies parameter changes by selecting and breeding plants with specific genetic traits that confer resistance to Cercospora leaf spot and powdery mildew. The breeding process modifies the genetic parameters of Lagerstroemia cultivars to introduce disease resistance while maintaining ornamental qualities, resulting in the 'Lava Java' cultivar that exhibits both aesthetic appeal and improved health resilience.
2Adaptability or versatility
If current Lagerstroemia cultivars are used, then they produce flowers, but they have limited hardiness and are less suitable for diverse environmental conditions
Solution Approach 1:
The patent applies local quality by developing cultivars with region-specific adaptations. The 'Lava Java' cultivar has been bred with enhanced hardiness characteristics suitable for diverse environmental conditions including colder climates (USDA zones 5-9), while maintaining its ornamental flower production and growth habits. This allows the plant to thrive in specific local environments with improved reliability.
3Adaptability or versatility
If current Lagerstroemia cultivars are used, then they have established ornamental value, but they lack distinct characteristics that set them apart
Solution Approach 1:
The patent applies asymmetry by creating cultivars with distinctive and unique characteristics that differentiate them from existing Lagerstroemia varieties. The 'Lava Java' cultivar exhibits unique traits including specific flower coloration, foliage characteristics, and growth patterns that provide ornamental diversity and visual distinction, making it a reliable choice for landscapes requiring unique aesthetic appeal.
Data Source
AI summary
The new and distinct crape myrtle plant named Lagerstroemia ‘Lava Java’ has a dense, broadly-spreading, mounded habit, is ground hardy to at least USDA zone 6, has glossy, dark-green foliage with faint marginal wine blush that emerge deep mahogany-colored. The flowers cover the shrub with magenta-rose from shiny reddish buds. The new plant resists leaf spot and powdery mildew and is useful in the landscape as a specimen, en masse, or as a container plant.