Phygelius CROYELSOV Cultivar Breeding for Deep-Yellow Flowers
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Solution Overview
Problem
There is a need for new Phygelius cultivars that exhibit distinct flower color and improved habit and flowering characteristics, as existing varieties lack the desired rich deep-yellow flower color and compact upright habit with profuse flowering.
Innovation Solution
The development of the Phygelius cultivar 'CROYELSOV' through controlled cross-pollination between Phygelius aequalis and Phygelius 'Yellow Trumpet', resulting in a hybrid with compact upright habit, rich deep-yellow flowers, and increased flowering stems and flowers per stem, which is stable and uniform through asexual propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If existing Phygelius varieties are used, then they have basic flowering characteristics, but they lack rich deep-yellow flower color and compact upright habit with profuse flowering
Solution Approach 1:
The patent applies parameter changes by selectively breeding plants with specific genetic parameters to achieve the desired flower color (rich deep-yellow) and growth parameters (compact upright habit). The breeding process modifies the genetic parameters of Phygelius aequalis to produce the 'CROYELSOV' cultivar with these specific characteristics.
Solution Approach 2:
The patent creates a composite genetic structure by crossing Phygelius aequalis with itself under controlled conditions to produce a hybrid cultivar. This composite approach combines desirable traits from different parent plants to achieve the unique combination of deep-yellow flower color, compact habit, and profuse flowering.
2Quantity of substance
If controlled cross-pollination is used to develop new cultivars, then new flower colors and improved characteristics are achieved, but the breeding process requires multiple generations and back-crosses
Solution Approach 1:
The patent applies preliminary action by conducting controlled cross-pollination and selecting parent plants with desired characteristics before the main breeding process. The inventor prepared and selected specific parent plants (one with deep-pink flowers and another with yellow flowers) in advance, which accelerated the development of the target cultivar with rich deep-yellow flowers.
Solution Approach 2:
The patent uses feedback mechanisms by continuously assessing the flowering characteristics, habit, and color of plants through multiple generations. The inventor made initial assessments in July 2000, carried out back-crosses in September 2000, and made final assessments in September 2001, using this feedback to guide further breeding decisions and select the best individuals.
3Quantity of substance
If selection is based on flower color, habit, and quantity of flowers, then distinguishable cultivars are produced, but the selection criteria require multiple assessment points
Solution Approach 1:
The patent applies preliminary action by establishing clear selection criteria (flower color, habit, and quantity of flowers) and making initial assessments early in the breeding process. The inventor made initial assessments in July 2000 to identify promising individuals before committing to further back-crossing, which streamlined the selection process.
Solution Approach 2:
The patent applies local quality by focusing selection on specific local characteristics of the plants - namely the flower color (rich deep-yellow), the habit (compact upright), and the flowering quantity (profuse). Rather than assessing all possible traits, the inventor concentrated on these key local qualities that define the cultivar's distinctiveness.
Data Source
AI summary
A new cultivar of Phygelius named ‘CROYELSOV’ that is characterized by compact upright habit, green foliage, and rich deep-yellow flowers that bloom late summer and fall. In combination these traits set ‘CROYELSOV’ apart from all other existing varieties of Phygelius known to the inventor.