Verbena VEAZ0039 Cultivar Breeding for Stable Compact Traits
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Solution Overview
Problem
There is a need for a new Verbena hybrida cultivar that exhibits specific characteristics such as small inflorescences, lilac and lemon flowers, medium green un-divided leaves, and an upright plant habit, which are not currently available in existing varieties and are stable across successive generations of asexual reproduction.
Innovation Solution
The development of Verbena hybrida cultivar 'VEAZ0039' through a planned breeding program, which combines these distinct characteristics and is propagated via stem tip cuttings, retaining its phenotype despite variations in environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a new Verbena hybrida cultivar with specific characteristics (small inflorescences, lilac and lemon flowers, medium green un-divided leaves, upright plant habit) is developed through planned breeding, then the distinctiveness and stability of these characteristics are achieved, but the time and resources required for breeding and selection increase
Solution Approach 1:
The breeding program was conducted in advance with systematic selection of parent plants and controlled crossing to pre-establish the desired characteristics before commercial propagation. The plant was selected from progeny in May 2013 and propagated through stem tip cuttings in June 2013, establishing the stable phenotype before public release.
2Stability of the object's composition
If the cultivar is propagated through asexual reproduction (stem tip cuttings), then the phenotype is retained consistently across generations, but the ability to observe full environmental adaptability and reproductive capabilities is limited
Solution Approach 1:
The cultivar is propagated asexually through stem tip cuttings, creating genetically identical copies that retain the desired phenotype consistently. This cloning approach ensures that the specific combination of characteristics (small inflorescences, lilac and lemon flowers, medium green un-divided leaves, upright habit) is preserved across all propagated plants.
3Ease of operation
If the plant characteristics are selected for compact size and upright habit, then the plant is suitable for container growth and ornamental purposes, but the plant height and spread are reduced
Solution Approach 1:
The breeding program selected for specific parameter values including plant height of 19.0 cm and plant width of 33.0 cm, creating a compact upright habit suitable for container growth. The inflorescence diameter was controlled at 5.9-6.4 cm, and the plant maintains this compact form through asexual propagation.
Data Source
AI summary
A new Verbena plant named ‘VEAZ0039’ particularly distinguished by the small sized inflorescences, the flowers with lime green lower petals and lavender purple upper petals, dark green, undivided leaves, and an upright plant habit.