Seedless Table Grape Cultivar Itumseven Drought Tolerance
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Solution Overview
Problem
There is a need for a new variety of Vitis vinifera that exhibits stable and unique characteristics such as medium-sized, bright medium red table grapes with seedless fruit, suitable for handling and shipping, and tolerance to drought, which are not met by existing cultivars.
Innovation Solution
The cultivar 'Itumseven' is developed through deliberate cross-breeding of 'ITUM 97-27-31' and 'Princess', showcasing medium-sized, bright medium red grapes with a narrow ellipsoid shape, seedless, and drought tolerance, maintaining these characteristics through multiple generations and varying environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing grape cultivars are used, then traditional varieties are available, but they do not meet the requirements for seedless fruit, drought tolerance, and suitable handling characteristics
Solution Approach 1:
The patent applies parameter changes by selecting and breeding for specific phenotypic parameters including seedless fruit development, drought tolerance mechanisms, berry firmness, and skin adhesion properties. These parameter changes in the grape cultivar enable simultaneous achievement of reliability (drought tolerance) and adaptability (handling suitability) that were not present in existing varieties
2Ease of operation
If seedless grape varieties are developed, then fruit quality improves for consumers, but achieving stable seedless fruit formation across generations is challenging
Solution Approach 1:
The patent employs feedback mechanisms through multi-generational testing and evaluation of seedless fruit formation. The breeding program systematically assessed fruit set, seed development, and phenotypic stability across multiple generations, using this feedback information to select and propagate the most stable seedless lines, thereby achieving both ease of operation (seedless quality) and compositional stability
3Productivity
If grape varieties are bred for unique characteristics, then commercial value increases, but proving stability of these characteristics through testing requires significant time and resources
Solution Approach 1:
The patent applies preliminary action by conducting extensive preliminary testing and evaluation during the breeding process itself. The cultivar was tested across multiple generations and locations before commercial release, establishing stability of unique characteristics in advance. This preliminary validation reduces future testing requirements and accelerates commercialization, thereby increasing productivity while minimizing time loss
Data Source
AI summary
A new and distinct variety of grapevine named ‘Itumseven’ as herein disclosed. ‘Itumseven’ forms medium sized bright medium red colored berries with an attractive narrow ellipsoid berry shape, a neutral flavor and a firm berry texture. Being mid-season variety, the fruit commonly is ready for harvesting in from August to late September in Murcia, Spain. ‘Itumseven’ displays good eating qualities as a table grape, the fruit meatiness and firmness render the fruit amenable for handling, shipping, and storage.