Kalanchoe Grace Cultivar Double Flower and Longevity
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Solution Overview
Problem
Current Kalanchoe cultivars lack large, double-flowered varieties with attractive foliage and flower coloration, and there is a need for cultivars that exhibit stable and uniform growth habits and longer post-production longevity.
Innovation Solution
The development of the new Kalanchoe cultivar 'Grace' through cross-pollination of Kalanchoe blossfeldiana cultivars KJ 2003 0818 and KJ 2001 0934, resulting in plants with large, upright growth, dark green leaves, uniform flowering, and large double white flowers, which are stable and reproduce true to type through vegetative terminal cuttings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional Kalanchoe cultivars are used, then they have simple flower structure and shorter growth cycle, but they lack large double flowers and attractive foliage
Solution Approach 1:
The patent combines multiple desirable traits from different parent cultivars through controlled cross-pollination. The female parent KJ 2003 0818 contributes double flower structure and white coloration, while the male parent KJ 2001 0934 contributes compact growth habit and uniform flowering. This merging of genetic material creates a new cultivar that simultaneously achieves large double flowers, attractive dark green foliage, and uniform growth habit.
Solution Approach 2:
The breeding program deliberately altered key phenotypic parameters including flower size (increased to large), flower structure (changed to double), foliage color (enhanced to dark green), and growth habit (standardized to uniform and compact). These parameter changes were achieved through selective cross-pollination and subsequent selection of superior progeny.
2Volume of moving object
If new large double-flowered varieties are developed, then flower size and petal count increase, but stability and uniformity of growth habit may vary
Solution Approach 1:
The breeding program incorporated systematic observation and selection feedback mechanisms. Multiple generations of vegetative propagation were used to test and confirm the stability of desired traits. The inventor selected and propagated only those plants that consistently exhibited uniform growth habit, large double flowers, and dark green foliage, thereby reinforcing stable trait expression through selective propagation.
Solution Approach 2:
Instead of selecting for maximum flower size alone and accepting growth habit variability, the program inverted the selection priority by first establishing uniform and compact growth habit as the foundation, then selecting for large double flowers within that uniform framework. This reverse approach ensured that vigor and uniformity were maintained while achieving large flower size.
3Duration of action of moving object
If cultivars with extended postproduction longevity are created, then flower retention period increases, but adaptability to different environmental conditions may be reduced
Solution Approach 1:
The new cultivar exhibits differentiated local qualities optimized for postproduction performance. The foliage displays enhanced dark green coloration and succulence that specifically improves water retention and longevity. The flower structure features increased petal count and double flowering that extend display period. These localized trait enhancements were achieved through targeted selection in the breeding program.
Solution Approach 2:
The cultivar represents a composite genetic combination bringing together favorable alleles from both parent cultivars. The female parent contributes genes for double flower structure and white coloration, while the male parent contributes genes for compact growth and uniform flowering. This genetic composite creates a plant with enhanced postproduction longevity while maintaining adequate environmental adaptability through genetic diversity.
Data Source
AI summary
A new and distinct cultivar of Kalanchoe plant named ‘Grace’, characterized by its large, upright, uniform and moderately vigorous growth habit; large dark green-colored leaves; uniform and freely flowering habit; large double white-colored flowers; and excellent postproduction longevity.