Grapevine IFG Nineteen Resolving Fruit Size and Disease Resistance Trade-off
Solution Overview
Problem
Previous interspecific grape varieties introduced to enhance hardiness, disease, and insect resistance, as well as incorporate aromatic flavors into Vitis vinifera, have faced limited commercial success due to small fruit size, large seed traces, slipskin texture, or lack of firmness.
Innovation Solution
The development of the grapevine variety 'IFG Nineteen', which is a hand-pollinated cross between the Princess and A2798 hybrid, resulting in large seedless red berries with a unique muscat and labrusca flavor, firm texture, and good skin and flesh adhesion, overcoming previous limitations by combining muscat and labrusca flavors with larger berry size and improved growth habits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If intersspecific grape varieties are introduced to enhance hardiness, disease and insect resistance, then resistance to environmental stressors is improved, but fruit size remains small and seed traces are large
Solution Approach 1:
The patent combines multiple grape species (Vitis vinifera, Vitis labrusca, and other American species) into a single intersspecific hybrid variety. This merging of genetic material allows the resulting grape to inherit disease resistance and hardiness from American species while achieving larger fruit size and reduced seed traces through careful selection and breeding, thus resolving the contradiction between resistance improvement and fruit quality.
2Quantity of substance
If intersspecific grape varieties are developed to incorporate aromatic flavors, then flavor profile is improved, but skin adhesion deteriorates and texture becomes slippery
Solution Approach 1:
The patent applies local quality by selectively incorporating specific genetic traits from different species into particular regions of the grape's characteristics. The variety 'IFG Nineteen' exhibits strong skin adhesion and firm texture in the flesh while maintaining aromatic flavors, achieving localized optimization of different properties to resolve the contradiction between flavor enhancement and texture quality.
3Volume of moving object
If traditional Vitis vinifera species are used to maintain fruit quality, then berry size and texture are good, but hardiness and disease resistance are limited
Solution Approach 1:
The patent creates a composite genetic structure by combining Vitis vinifera with American grape species in an intersspecific hybrid. This composite approach allows the grape to exhibit the desirable fruit quality traits of vinifera (larger berry size, good texture) while simultaneously acquiring the hardiness and disease resistance characteristics of American species, thus resolving the contradiction between fruit quality and environmental resistance.
Data Source
AI summary
This invention is a new and distinct grapevine variety denominated ‘IFG Nineteen’. The new grapevine is characterized by producing naturally large seedless red berries having a broad ellipsoid shape with a unique strong fruity flavor having a combination of muscat and labrusca flavors.