Rosa hybrida ESM R059 Botrytis Resistance and Flower Longevity
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Solution Overview
Problem
Current cut flower Rose varieties often lack attractive flowers with excellent postproduction longevity and are susceptible to Botrytis, with limited resistance to environmental variations and pests.
Innovation Solution
The development of Rosa hybrida 'ESM R059' through controlled cross-pollination, exhibiting upright stems, vigorous growth, light red-colored flowers, and resistance to Botrytis, with improved longevity and reduced thorn density compared to parent selections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional cut flower Rose varieties are used, then they are susceptible to Botrytis and have limited resistance to environmental variations, but developing resistance reduces flower attractiveness and longevity
Solution Approach 1:
The patent applies parameter changes by selectively breeding for specific genetic traits that alter the plant's resistance parameters without compromising flower quality. The breeding program modified the genetic parameters of the Rose plant to achieve Botrytis resistance while maintaining attractive light red flowers and excellent postproduction longevity.
Solution Approach 2:
The patent creates a composite genetic structure by crossing two different Rose selections (Line 188 and Line 222) to combine desirable traits. The resulting 'ESM R059' cultivar integrates resistance genes from one parent with flower quality genes from the other, creating a composite genotype that simultaneously achieves disease resistance and floral attractiveness.
2Productivity
If Rose varieties with vigorous growth habit are developed, then productivity increases, but stem thorn density increases making handling difficult
Solution Approach 1:
The patent applies local quality by differentiating traits in different parts of the plant. The 'ESM R059' cultivar exhibits vigorous growth and high flower productivity in the vegetative portions while maintaining reduced thorn density specifically on the stems. This localized trait distribution allows high productivity without the handling difficulties associated with dense thorns.
Solution Approach 2:
The breeding program changed the thorn density parameter independently from the growth vigor parameter. Through selective cross-pollination and progeny selection, the inventor reduced stem thorn density while simultaneously maintaining or enhancing the vigorous growth habit and flower production capacity of the plant.
3Duration of action of moving object
If Rose varieties with longer flowering duration are developed, then postproduction longevity improves, but growth vigor decreases reducing overall productivity
Solution Approach 1:
The patent applies dynamics by creating a cultivar that dynamically balances growth and flowering phases. The 'ESM R059' Rose exhibits vigorous vegetative growth that supports continuous flowering, while individual flowers maintain extended longevity. The plant dynamically allocates resources to sustain both rapid growth and prolonged flower duration without compromising either trait.
Solution Approach 2:
The patent combines genetic traits for vigorous growth with traits for extended flower longevity through cross-breeding. The resulting composite genotype in 'ESM R059' integrates growth vigor from one parental line with postproduction longevity from the other, achieving both high productivity and extended flower duration simultaneously.
Data Source
AI summary
A new and distinct cultivar of Rose plant named ‘Esm R059’, characterized by its upright and strong flowering stems; vigorous growth habit and high productivity; freely flowering habit; light red-colored flowers that are typically grown as spray types; excellent postproduction longevity; and resistance to Botrytis.