Osteospermum Cultivar DEL COM WH Heat Tolerance Breeding
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Solution Overview
Problem
There is a need for a new cultivar of Osteospermum ecklonis that exhibits distinct characteristics such as small daisy-type inflorescence, compact growth habit, and high heat tolerance, which are not met by existing varieties like 'Osjamwhit', and can thrive under varying environmental conditions.
Innovation Solution
The cultivar 'DEL COM WH' is developed through open pollination and asexual reproduction, featuring small daisy-type inflorescence, freely flowering with a compact growth habit, pure white inflorescences with dark purple and violet underside and dark blue center, and high heat tolerance, distinguishing it from parent selections and commercially available varieties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing Osteospermum varieties are used, then they have established growth patterns, but they lack distinct characteristics such as small daisy-type inflorescence, compact growth habit, and high heat tolerance
Solution Approach 1:
The patent applies parameter changes by selecting and breeding plants with specific phenotypic traits including smaller inflorescence diameter (4-6 cm vs. larger in parent selections), compact growth habit, and enhanced heat tolerance. The breeding process involved open pollination in a heterogeneous population followed by selection of individuals exhibiting the desired parameter combination of small compact inflorescences with high heat tolerance.
2Shape
If Osteospermum varieties with larger inflorescences are selected, then they have more prominent flowers, but they exhibit less compact growth habit and lower heat tolerance
Solution Approach 1:
The breeding program changed multiple parameters simultaneously: selecting for compact inflorescence shape (diameter 4-6 cm), dense foliage arrangement, and high heat tolerance. Plants were evaluated under hot environmental conditions and those maintaining compact growth and flowering performance at elevated temperatures were selected for the next generation.
Solution Approach 2:
The patent employs preliminary action by pre-selecting parent plants from a heterogeneous population that exhibited desired traits before the breeding process. The selected parents already showed tendencies toward compact growth and heat tolerance, which were then consolidated and enhanced in the offspring through controlled open pollination and subsequent selection.
3Duration of action of stationary object
If Osteospermum varieties with longer flowering season are used, then they have extended bloom period, but they lack earlier natural flowering and longer inflorescence longevity
Solution Approach 1:
The patent changes temporal parameters by selecting for earlier natural flowering onset and extended inflorescence longevity. The new cultivar 'DEL COM WH' exhibits earlier flowering in the natural season compared to parent selections and maintains vibrant, long-lasting inflorescences throughout the blooming period, with individual flowers remaining attractive for extended durations.
Data Source
AI summary
A new and distinct Osteospermum plant cultivar is disclosed, characterized by small daisy type inflorescences, freely flowering, compact growth habit, pure white inflorescences with a dark purple and violet underside and a dark blue center, and a high heat tolerance.