Verbena hybrida 'Lan Dareda' Powdery Mildew Resistance
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Solution Overview
Problem
Current Verbena cultivars lack a combination of dark red, large flowers, vigorous and free-branching growth habit, and significant resistance to powdery mildew, which are desirable horticultural traits.
Innovation Solution
The development of Verbena hybrida 'Lan Dareda' through controlled hybridization, combining the dark red flower color and vigorous growth habit of '04-1801-3' with the disease resistance and smaller flower size of 'Aztec Velvet Red', resulting in a cultivar with enhanced powdery mildew tolerance and distinct horticultural characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If Verbena cultivars are bred for dark red, large flowers and vigorous growth habit, then floral appearance and plant form are improved, but resistance to powdery mildew deteriorates
Solution Approach 1:
The patent combines desirable traits from two different parent cultivars through controlled hybridization. The female parent '04-1801-3' contributes dark red flower color and vigorous mounding growth habit, while the male parent 'Aztec Velvet Red' contributes powdery mildew resistance. The resulting cultivar 'Lan Dareda' merges these characteristics to achieve both large dark red flowers and disease resistance simultaneously
Solution Approach 2:
The breeding program systematically varied genetic parameters through controlled cross-breeding to achieve the desired combination of traits. By changing the genetic composition through hybridization between specific parents with complementary traits, the cultivar achieved optimal flower size, color intensity, growth habit, and disease resistance that cannot be obtained in any single parent cultivar
2Productivity
If Verbena cultivars are bred for vigorous and free-branching growth habit, then plant form and coverage are improved, but disease resistance deteriorates
Solution Approach 1:
The patent merges the vigorous growth habit from the female parent '04-1801-3' with the powdery mildew resistance from the male parent 'Aztec Velvet Red'. The cultivar 'Lan Dareda' exhibits free-branching, mounding growth that covers 45-48 cm in width while maintaining exceptional tolerance to powdery mildew, resolving the contradiction between growth vigor and disease resistance
Data Source
AI summary
A new Verbena plant named ‘Lan Dareda,’ particularly distinguished by dark red-colored large flowers with vigorous and free-branching, mounding and outwardly spreading growth habit, medium yellow-green foliage and an exceptional tolerance to powdery mildew.