Petunia Duegpbu Cultivar Breeding for Trait Stability
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Solution Overview
Problem
There is a need for new semi-upright to trailing Petunia plants with unique and attractive flowers that can reproduce stably and maintain their characteristics across varying environmental conditions and cultural practices.
Innovation Solution
A new Petunia cultivar, 'Duegpbu', resulting from a cross-pollination between proprietary selections of Petunia×hybrida, exhibiting a compact, semi-upright to trailing habit, freely branching, early and continuous flowering, large dark violet flowers, and good garden performance, which is stable through asexual reproduction by terminal cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a cross-pollination between proprietary selections is performed to create new Petunia plants, then unique and attractive flower characteristics can be achieved, but the stability of traits across generations may be compromised
Solution Approach 1:
The patent performs preliminary action by conducting controlled cross-pollination between specifically selected parent plants (T05-4946-15 and T07-0520-5) before the desired traits can be stabilized. The breeder deliberately selects parents with complementary characteristics and controls the pollination process to ensure trait stability in the progeny, rather than allowing random cross-pollination.
Solution Approach 2:
The patent applies feedback by systematically observing and selecting from the progeny generation. The breeder evaluates the offspring for desired traits (flower color, shape, plant habit) and selects only those that demonstrate stable inheritance patterns, using this feedback to confirm whether the cross-pollination achieved the desired stable characteristics.
2Adaptability or versatility
If environmental conditions vary, then plant phenotype may change, but the genotype remains stable
Solution Approach 1:
The patent acknowledges parameter changes by recognizing that environmental factors such as temperature and light intensity can alter the phenotype expression of the Petunia plants. The breeder understands that while the genetic code (genotype) remains stable, the physical characteristics (phenotype) may vary with environmental conditions, and this variability is noted in the plant description.
3Reliability
If terminal cuttings are used for asexual reproduction, then trait stability is maintained, but the diversity of new varieties is limited
Solution Approach 1:
The patent applies segmentation by using terminal cuttings that take root to create new plants. This method segments the parent plant into separate rooted individuals that can be propagated independently, maintaining the stable traits of the parent while allowing for the creation of multiple identical copies or variations through selective propagation.
Solution Approach 2:
The patent uses copying through asexual reproduction by terminal cuttings, where new plants are created as genetic copies of the parent plant. This copying process maintains the stable traits and characteristics of the parent variety, producing true-to-type offspring that faithfully replicate the desired phenotypic characteristics.
Data Source
AI summary
A new and distinct cultivar of Petunia plant named ‘Duegpbu’, characterized by its compact, semi-upright to trailing and mounding plant habit; freely branching habit; early and freely flowering habit; large dark violet-colored flowers; and good garden performance.