Buddleja TOBUD0703 Cultivar Breeding via Segmented Selection

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Solution Overview

Problem

There is a need for a new and distinct cultivar of Buddleja davidii that exhibits unique characteristics such as conical flower spikes with purple flowers and a long flowering season, differing from existing varieties like 'Tobudviole' and 'BU05024', with improved size, leaf count, and habit.

Innovation Solution

The cultivar 'TOBUD0703' is developed through open pollination, characterized by its conical flower spikes with purple flowers, larger size, more leaves, and an upright habit, reproduced consistently through asexual methods, showcasing distinct traits compared to its parent and closest comparison cultivars.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If open pollination is used to develop new cultivars, then genetic diversity and unique characteristics are improved, but breeding time and uncertainty are increased

Engineering Contradiction:
Improvegenetic diversityVSAvoidbreeding time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent performs preliminary selection of parent plants with desirable traits before pollination, and conducts preliminary observations on seedlings to identify promising candidates early in the breeding process. This preliminary action reduces the time needed for later selection stages while maintaining genetic diversity through open pollination.

Inventive Principle:
Principle #10Preliminary action

2Manufacturing precision

If strict selection criteria are applied to identify unique cultivars, then cultivar distinctness is improved, but the number of candidates and selection complexity are reduced

Engineering Contradiction:
Improvecultivar distinctnessVSAvoidselection complexity
Core Design Contradiction:
Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent segments the selection process into multiple distinct stages: initial seedling observation, intermediate evaluation, and final cultivar designation. Each stage focuses on specific characteristics (e.g., flower color, plant habit, growth rate), breaking down the complex task of cultivar identification into manageable segments that reduce overall selection complexity while maintaining distinctness criteria.

Inventive Principle:
Principle #1Segmentation

3Stability of the object's composition

If multiple generations are observed to ensure stability, then cultivar uniformity is improved, but observation time and resources are increased

Engineering Contradiction:
Improvecultivar uniformityVSAvoidobservation time
Core Design Contradiction:
Stability of the object's compositionVSDuration of action of stationary object

Solution Approach 1:

The patent implements continuous observation and documentation of cultivar characteristics across generations, rather than discrete periodic checks. This continuous monitoring allows for earlier detection of instability and reduces the total observation time needed to confirm cultivar uniformity, as deviations can be identified and addressed promptly rather than waiting for scheduled evaluation intervals.

Inventive Principle:
Principle #20Continuity of useful action

Data Source

PatentUSPP23462P2Buddleja plant named `TOBUD0703`
Publication Date: 2013.03.12 THOMPSON AND MORGAN
  • USPP23462P2 patent drawing

AI summary

A new cultivar of Buddleja plant named ‘TOBUD0703’ that is characterized by conical flower spikes with purple flowers and a long flowering season.