Compact Rosa Cultivar Breeding for Disease Resistance and Continuous Blooming
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current garden rose varieties lack compact growth, disease resistance, and consistent blooming, particularly in varying environmental conditions, and do not offer the desired combination of double orange flowers with a moderate lemon scent and resistance to black spot and powdery mildew.
Innovation Solution
The new Rosa cultivar 'ALTorcaptain' is bred for its compact size, early prolific blooming, dark glossy foliage resistant to black spot and powdery mildew, and double orange flowers with a moderate lemon fragrance, achieved through asexual reproduction by vegetative cuttings, ensuring stability across generations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If garden rose varieties are bred for continuous blooming and ornamental value, then flower production and aesthetic appeal are improved, but plant size becomes unmanageable and disease resistance is compromised
Solution Approach 1:
The patent combines multiple desirable traits (compact size, disease resistance, continuous blooming, double orange flowers, and lemon fragrance) into a single rose cultivar through selective breeding. The cross between seed parent and pollen parent resulted in 'ALTorcaptain' that integrates all these features simultaneously, resolving the contradiction by merging previously separate trait combinations.
Solution Approach 2:
The breeding program altered key parameters including plant size (reduced to 2×2 ft compact), flower color (orange), petal count (double flowers with 25+ petals), and disease resistance levels. These parameter changes created a new cultivar that exceeds parent varieties in multiple characteristics simultaneously.
2Shape
If rose varieties are bred for larger flower size and more petals, then ornamental value is improved, but plant size becomes too large for compact gardening applications
Solution Approach 1:
The patent applies local quality by concentrating ornamental features (double orange flowers with 25+ petals, lemon fragrance) in the flower heads while maintaining compact overall plant size (2×2 ft). This allows the flowers to be showy and complex while the plant remains suitable for compact gardening spaces.
3Ease of manufacture
If traditional grafting methods are used for rose propagation, then commercial compatibility is improved, but independence from rootstock and genetic stability are compromised
Solution Approach 1:
The patent enables roses to propagate themselves through own-root vegetative cuttings without requiring external rootstock support. The 'ALTorcaptain' cultivar develops its own root system, making it self-sufficient and eliminating dependence on grafting compatibility with specific rootstocks while maintaining genetic stability across generations.
Data Source
AI summary
A new and distinct cultivar of Rosa plant named ‘ALTorcaptain’ is disclosed, characterized by distinctive fully double red-orange flowers with a lemony fragrance. Plants are vigorous and can be grown on their own roots. Plants are compact, flower continuously and exhibit good resistance to blackspot disease. The new variety is a Rosa, normally produced as an outdoor garden or container plant.