Grandiflora Rose Meibihars Breeding for Combined Traits
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Solution Overview
Problem
There is a need for a new variety of Rosa hybrida Grandiflora rose plant that combines desirable characteristics such as semi-erect growth habit, abundant and continuously blooming cream-colored blossoms with red margins, glossy medium green foliage, and a strong fragrance, which are not adequately met by existing varieties.
Innovation Solution
The new Rosa hybrida Grandiflora rose plant, named 'Meibihars', was created through artificial pollination of the 'Meimagarmic', 'Meihelvet', and 'Korsee' varieties, resulting in a plant with distinct semi-erect growth, attractive cream-colored blossoms, glossy foliage, and a pleasant fragrance, suitable for landscape ornamentation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing rose varieties are used, then they have established growth habits and foliage characteristics, but they do not simultaneously exhibit the desired combination of semi-erect growth habit, abundant continuous blooming, cream-colored blossoms with red margins, and strong fragrance
Solution Approach 1:
The patent combines multiple parent varieties ('Meimagarmic' for fragrance and petal characteristics, 'Meihelvet' for growth habit, and 'Korsee' for coloration) through controlled cross-pollination to create a new variety that merges desirable traits from each parent into a single consistent genotype that can be propagated asexually
Solution Approach 2:
The invention changes the genetic parameters of the rose plant through selective breeding, specifically modifying traits such as growth habit (to semi-erect), flower color (cream with red margin), blooming pattern (abundant and continuous), and fragrance intensity to achieve a unique combination not found in existing varieties
2Adaptability or versatility
If a new variety is created through artificial pollination and selective study, then it exhibits desirable combined characteristics, but it requires extensive breeding and selection processes
Solution Approach 1:
The patent performs preliminary selective breeding by carefully choosing parent varieties with complementary desirable traits before cross-pollination, and conducts preliminary evaluation of offspring during the breeding process to identify plants that best exhibit the desired combination of characteristics, thereby reducing the overall time required
3Stability of the object's composition
If the new variety is propagated asexually, then the characteristics are stable and strictly transmissible, but it requires successful establishment of propagation methods in different locations
Solution Approach 1:
The patent establishes self-service propagation capabilities by successfully demonstrating asexual propagation through multiple methods (budding, grafting, cuttings) at different locations (Le Luc, France and other sites), enabling the variety to be reliably reproduced without dependency on a single propagation center
Data Source
AI summary
A new and distinct variety of Grandiflora rose plant is provided that abundantly forms on a nearly continuous basis attractive cream-colored blossoms that are margined with red. Blossoming commonly is initiated early in the season. A semi-erect low and substantially regular growth habit is displayed and the medium green foliage bears a glossy aspect. The blossoms emit a pleasant strong fragrance. The tolerance to diseases is normal with no particular susceptibility to diseases and pests having been found during observations to date. The plant is well suited for providing attractive ornamentation in parks and gardens.