FLEURTAI Grapevine Cold and Mildew Resistance
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Solution Overview
Problem
Current grapevine varieties lack resistance to cold temperatures and tolerance to downy mildew and powdery mildew, limiting their adaptability and productivity in temperate regions with harsh winter conditions.
Innovation Solution
The development of a new grapevine variety, 'FLEURTAI', through controlled breeding, which combines strong vigor, erect growth habit, resistance to winter temperatures, and tolerance to downy mildew and powdery mildew, achieved by crossing Vitis vinifera 'Tocai Friulano' and '20/3' (Bianca×SK77-4/5), resulting in a distinct cultivar with enhanced characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional grapevine varieties are used, then they can maintain moderate growth and productivity, but they lack resistance to cold temperatures and tolerance to downy mildew and powdery mildew
Solution Approach 1:
The patent applies composite breeding by crossing Vitis vinifera 'Tocai Friulano' with Vitis cv. '20/3' (Bianca×SK77-4/5) to create a hybrid cultivar that combines the desirable traits of both parents. The resulting 'FLEURTAI' variety exhibits composite resistance properties, showing resistance to cold temperatures (−23° C.), downy mildew, and powdery mildew, while maintaining the adaptability and productivity characteristics needed for temperate regions.
2Reliability
If grapevine varieties with strong resistance to diseases and cold are developed, then their reliability in harsh climates improves, but their growth vigor and fruit production may be compromised
Solution Approach 1:
The patent achieves parameter optimization by carefully selecting breeding parents and controlling the crossing conditions to produce a hybrid with balanced characteristics. The 'FLEURTAI' variety exhibits strong vigor, erect growth habit, and consistent fruit production from April through November on both primocanes and floricanes, while simultaneously demonstrating resistance to winter temperatures (−23° C.), downy mildew, and powdery mildew. This parameter balancing resolves the contradiction between reliability and productivity.
3Reliability
If grapevine varieties are bred for specific climate adaptation, then their reliability in that climate improves, but their adaptability to different growing conditions may be reduced
Solution Approach 1:
The patent creates a multi-functional cultivar that can serve multiple purposes and adapt to various temperate conditions. The 'FLEURTAI' variety produces consistent fruit on both primocanes and floricanes, extends the harvesting season, and maintains productivity across different temperate regions including North-Eastern Italy, France, Germany, and Switzerland. This universal adaptability while maintaining specific climate resistance resolves the contradiction between reliability and versatility.
Data Source
AI summary
A new and distinct variety of grapevine plant named ‘FLEURTAI’, primarily adapted to the growing conditions of the temperate regions and characterized by its strong vigor; erect growth habit; small to medium circular shaped leaves with medium texture; medium sized berry clusters with golden-green berries that have an amber nuance on the sunny side of the berry, soft flesh, neutral taste, and no flesh coloration primarily used for wine; early harvesting time; and resistance to winter temperatures (to −23° C.), resistance to downy mildew, and tolerance to powdery mildew.