AUSquaker Rose Shrub Two-Colored Petals Rain Resistance
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Solution Overview
Problem
Current rose cultivars lack a variety with two-colored petals transitioning from yellow to orange, resistant to rain damage, and exhibiting vigorous arching stems, while maintaining a rich apricot bloom appearance and light-medium tea fragrance.
Innovation Solution
The development of a new Rosa hybrida shrub, 'AUSquaker', achieved through cross-pollination of unnamed seedlings, featuring two-colored petals, red-tipped buds, large informal rosettes, ruffled petals, and arching stems, which are resistant to rain damage and can be asexually propagated using the Rosa 'Dr. Huey' and Rosa dumetorum rootstocks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional rose breeding methods are used to develop new varieties, then genetic diversity and unique characteristics can be achieved, but the breeding process is time-consuming and requires multiple generations of selection
Solution Approach 1:
The patent performs preliminary breeding actions by crossing selected parent plants and obtaining F1 hybrids with desired characteristics (two-colored petals, arching growth). This preliminary generation is then used for further breeding, reducing the overall time required compared to starting from scratch with traditional multi-generational selection methods.
2Shape
If rose varieties are bred for vibrant two-colored petals and unique bloom characteristics, then aesthetic appeal is improved, but the complexity of maintaining these specific color patterns and bloom forms increases
Solution Approach 1:
The patent applies local quality by selecting parent plants with specific local characteristics (one parent with yellow-based petals, another with orange-based petals) and combining them to produce F1 hybrids with the desired two-colored petal pattern. This targeted selection of specific traits in parent plants simplifies the breeding process compared to attempting to create the complex color pattern from unrelated varieties.
Solution Approach 2:
The patent changes key parameters by selecting parents with complementary color characteristics and combining them to produce F1 hybrids with stable two-colored petals. The color parameters (yellow to orange gradient) and growth parameters (arching vs. upright) are specifically controlled through parent selection, reducing the complexity of subsequent selection steps.
3Reliability
If rose varieties are selected for vigorous arching growth and disease resistance, then plant health and reliability are improved, but the ability to produce large, showy blooms may be compromised
Solution Approach 1:
The patent merges desirable traits from different parent plants by crossing a vigorous, disease-resistant arching grower with a variety producing large, showy blooms. The F1 hybrids inherit both the vigorous growth habit and disease resistance from one parent and the large bloom capability from the other, achieving a combination of traits that would be difficult to obtain through single-plant selection.
Data Source
AI summary
A variety of rose plant of the shrub class, named ‘AUSquaker’. The ‘AUSquaker’ is a variety of a rose shrub with blooms containing two-colored petals, yellow from the base to the middle, blending towards an orange top half of the petal. The overall appearance is of rich apricot blooms, which begin as striking, red-tipped buds and gradually open to reveal large informal rosettes, each with ruffled petals and a button eye. They are very resistant to rain damage and the petals drop neatly. The fragrance is light-medium tea. The plant is a vigorous grower producing strong, arching stems and particularly reliable and healthy.