Cabernet Doré Grapevine Cold Hardiness and Wine Quality
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Solution Overview
Problem
Grape varieties of the species Vitis vinifera are susceptible to low temperatures and diseases when cultivated in northern regions, requiring grafting onto American rootstocks, which can result in wine with defects and unpleasant flavors, necessitating a combination of cold weather resistance, disease resistance, and superior wine quality without wild flavors.
Innovation Solution
The development of the 'Cabernet Doré' grape plant, resulting from a cross between 'Cabernet Sauvignon' and 'Norton', which combines high wine quality, cold hardiness, disease resistance, and self-rooting ability, eliminating the need for grafting and offering improved growth habits and flavor profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Vitis vinifera is cultivated in northern regions, then superior wine quality is achieved, but cold weather resistance deteriorates
Solution Approach 1:
The patent merges the superior wine quality genetics of Vitis vinifera with the cold hardiness and disease resistance of wild American Vitis species through controlled crossbreeding programs, creating hybrid varieties that exhibit both desirable traits without the defects of pure wild species
Solution Approach 2:
The invention creates composite grape varieties that combine multiple genetic components - European vinifera for wine quality and American wild species for hardiness - resulting in a composite plant with integrated beneficial properties from both parent species
2Object-affected harmful factors
If Vitis vinifera is grafted onto American rootstock, then cold weather resistance is improved, but wine quality deteriorates due to grafting defects and wild flavors
Solution Approach 1:
Instead of grafting, the patent combines cold hardiness and wine quality into a single integrated plant through crossbreeding, eliminating the graft union that causes defects and allowing the vine to be self-rooted while maintaining both desirable traits
Solution Approach 2:
The invention extracts and eliminates the need for grafting by breeding self-rooted varieties that inherently possess both cold hardiness and wine quality, removing the harmful intermediate step of grafting onto American rootstock
3Object-affected harmful factors
If wild Vitis species are used, then cold weather resistance and disease resistance are improved, but wine quality deteriorates due to unpleasant wild flavors
Solution Approach 1:
The patent merges the disease resistance and cold hardiness of wild American Vitis species with the superior wine quality genetics of Vitis vinifera through careful crossbreeding, selecting combinations that eliminate wild flavors while retaining hardiness and disease resistance
Solution Approach 2:
The invention applies local quality by allowing different parts of the plant to express different genetic traits - the root system and foliage exhibit wild species hardiness and disease resistance, while the fruit and wine quality are determined by the vinifera genetics
Data Source
AI summary
A new and distinct, self rooted, variety of grapevine plant, ‘Cabernet Doré’, from a cross of ‘Cabernet Sauvignon’ and ‘Norton’, which can be distinguished by its outstanding wine combined with high productivity, disease resistance, and cold hardiness superior to one of its two acclaimed parents ‘Cabernet Sauvignon’.