Calla Lily Aspen Cultivar Breeding for Fast Forcing and High Yield
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Solution Overview
Problem
There is a need for Zantedeschia hybrids that produce a wide range of colors with a classic inflorescence shape for cut flower arrangements, and existing cultivars do not meet the requirements for fast forcing time and high inflorescence production.
Innovation Solution
The new cultivar 'Aspen' of Zantedeschia sprengeri, resulting from a breeding program combining Zantedeschia sprengeri seedling Z030479 and 'Chrystal Blush', exhibits a pure white spathe, fast forcing time, and high inflorescence production, retained through asexual reproduction by tissue culture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing Zantedeschia hybrids are used, then a wide range of colors can be achieved, but the forcing time is slow and inflorescence production is low
Solution Approach 1:
The patent applies parameter changes by selecting and breeding plants with specific genetic parameters that optimize both forcing time and inflorescence production. The breeding program identified and selected progeny with superior parameters for rapid forcing and high inflorescence yield, thereby changing the genetic parameters of the cultivar to resolve the contradiction between productivity and time loss.
2Productivity
If existing Zantedeschia hybrids are used, then various colors are available, but the inflorescence production does not meet requirements
Solution Approach 1:
The patent merges multiple desirable traits from different parent plants into a single cultivar. By crossing Zantedeschia sprengeri seedling Z030479 with Zantedeschia sprengeri variety 'Chrystal Blush', the breeding program combined the high inflorescence production capability with the color characteristics, thereby achieving both high productivity and color versatility in the resulting 'Aspen' cultivar.
3Stability of the object's composition
If a new cultivar is developed to meet specific production requirements, then consistent traits across generations can be achieved, but the breeding process requires time and resources
Solution Approach 1:
The patent applies preliminary action by conducting extensive preliminary breeding work, including controlled crossings and selection of parent plants with desired traits, before the final cultivar is established. The breeding program began in 1989 with deliberate crossing of selected parents, and through preliminary generations of selection and asexual reproduction, the consistent traits were established early, allowing the 'Aspen' cultivar to be propagated true-to-type from 2008 onward.
Solution Approach 2:
The patent uses copying through asexual reproduction by tissue culture to replicate the selected cultivar exactly. Once the desired trait combination was achieved in the progeny, tissue culture methods were used to create identical copies of the plant, ensuring trait consistency across generations without requiring continued sexual reproduction and selection.
Data Source
AI summary
‘Aspen’ is a new variety of calla lily having inflorescences with a pure white-colored spathe that produces 2-10 inflorescences per tuber. The inflorescence stems are about 70 cm. in height and the leaves are green with whitish spots and have a leathery texture.