Hibiscus RutHib2 Cultivar Breeding for Pathogen Tolerance
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Solution Overview
Problem
Current Hibiscus moscheutos cultivars lack ornamental leaf distinctions, abundant flowers, and tolerance to pathogens, which limits their ornamental value and durability in various environmental conditions.
Innovation Solution
The cultivar 'RutHib2' is developed through a controlled breeding program combining Hibiscus moscheutos 'Crown Jewels' and '13-19', exhibiting medium vigor, purple foliage, magenta flowers, and good tolerance to Alternaria, Cercospora, and Phytophthora pathogens, achieved through vegetative terminal cuttings and stable reproduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional Hibiscus moscheutos cultivars are used, then they are easy to cultivate, but they lack ornamental leaf distinctions and have poor pathogen tolerance
Solution Approach 1:
The patent applies parameter changes by selectively breeding for specific genetic traits that confer pathogen tolerance while maintaining ornamental characteristics. The cultivar 'RutHib2' exhibits altered physiological parameters including enhanced immune response mechanisms and modified cell wall structures that provide resistance to Alternaria, Cercospora, and Phytophthora pathogens without compromising ease of cultivation
Solution Approach 2:
The patent employs composite materials principles by combining desirable traits from multiple parent plants through controlled hybridization. The cultivar 'RutHib2' integrates ornamental leaf characteristics from one parent with pathogen tolerance genes from another, creating a composite genetic structure that simultaneously provides aesthetic value and disease resistance while remaining easy to cultivate
2Quantity of substance
If existing Hibiscus varieties are selected, then they have simple growth requirements, but they lack abundant flowers and ornamental distinctions
Solution Approach 1:
The patent applies merging by combining multiple desirable traits into a single cultivar through controlled cross-breeding. The cultivar 'RutHib2' merges abundant flower production, ornamental purple foliage, and distinctive magenta flower characteristics into one integrated plant variety, achieving high flower abundance while maintaining relatively simple growth requirements inherited from the parent species
3Length of moving object
If Hibiscus moscheutos 'Crown Jewels' is used as parent, then it has compact size, but the offspring may lose pathogen tolerance and ornamental distinctions
Solution Approach 1:
The patent applies local quality by ensuring that pathogen tolerance and ornamental traits are distributed throughout the entire plant structure of the offspring, not just concentrated in specific parts. The cultivar 'RutHib2' exhibits uniform expression of disease resistance mechanisms across all tissues and maintains consistent ornamental characteristics including purple foliage and magenta flowers throughout the plant, preventing loss of these traits during propagation
Solution Approach 2:
The patent employs feedback mechanisms through rigorous evaluation and selection processes during the breeding program. Multiple generations of offspring were assessed for pathogen tolerance, flower abundance, and ornamental characteristics, with only those exhibiting desired traits being selected for further propagation. This feedback loop ensured that the compact size of 'Crown Jewels' parent did not result in loss of pathogen tolerance or ornamental distinctions in the final cultivar
Data Source
AI summary
A new Hibiscus plant named ‘RutHib2’ is characterized by a combination of good form, medium vigor, purple foliage, magenta flowers with a red eye, and good tolerance to Alternaria, Cercospora, and Phytophthora pathogens.