Sheegene 27 Grapevine Breeding for Early Maturity and Berry Size
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Solution Overview
Problem
There is a need for a new grapevine variety that produces medium-sized, seedless grapes suitable for both table grape and raisin production, with improved maturity timing and berry size compared to existing cultivars like Thompson Seedless and Selma Pete.
Innovation Solution
The development of the 'Sheegene 27' grapevine variety, which is a cross between 'Very Early Flame' and 'Red Globe', resulting in medium-sized, green-yellow, seedless grapes that mature 10 days earlier than Thompson Seedless and have larger berries than Selma Pete, with specific botanical characteristics and growth habits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Thompson Seedless is used for table grape production, then seedless quality is achieved, but maturity is delayed by 10 days compared to Sheegene 27
Solution Approach 1:
The patent applies parameter changes by breeding a new variety that alters the maturity timeline parameter while maintaining the seedless quality parameter. Sheegene 27 was developed through controlled crossing to achieve earlier maturity (10 days ahead of Thompson Seedless) while preserving the seedless berry characteristic, thus changing the temporal parameter without sacrificing quality.
2Loss of time
If Selma Pete is used for raisin production, then early maturity is achieved, but berry size is smaller compared to Sheegene 27
Solution Approach 1:
The patent applies parameter changes by developing Sheegene 27 to simultaneously optimize both maturity timing and berry size parameters. The variety achieves maturity timing comparable to Selma Pete while increasing berry weight from approximately 2 grams to 3 grams per berry, thus improving the weight parameter while maintaining the time parameter at acceptable levels.
3Weight of moving object
If grape variety is bred for larger berries, then berry size increases, but productivity may be reduced due to fewer berries per cluster
Solution Approach 1:
The patent applies parameter changes by breeding Sheegene 27 to achieve an optimal balance between berry size and cluster productivity. The variety produces medium-sized berries (3g each) that are larger than Selma Pete but not excessively large, maintaining a reasonable number of berries per cluster to preserve overall productivity. This represents an optimized parameter set that balances individual berry weight with total cluster yield.
Data Source
AI summary
A new and distinct grapevine plant named ‘Sheegene 27’ is described herein. The claimed variety was developed as a table grape and for raisin production, having uniform medium-sized, green, globose, seedless fruit weighing approximately 3 g each and having a crisp texture and neutral flavor. Harvest is in late-July to mid-August.