Grapevine Cultivar Breeding for Large Early-Ripening Green Berries
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Solution Overview
Problem
There is a need for new and distinct grapevine varieties that exhibit specific berry characteristics such as larger size, earlier ripening, and unique berry shape, which are not adequately addressed by existing cultivars.
Innovation Solution
The development of a new grapevine variety named 'SUGRA69', characterized by large, green, obtuse ovate berries with early season ripening, resulting from controlled hybridization between specific parent varieties and maintained through asexual propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If controlled hybridization is used to develop new grapevine varieties, then berry size and ripening time can be improved, but breeding complexity and time required increase
Solution Approach 1:
The patent combines multiple desirable traits from different parent varieties through controlled hybridization to create a new variety that exhibits large berry size (7.6g), early ripening (July 18), and unique obtuse ovate shape, merging the genetic characteristics of seed parent GR548W and pollen parent GR617R
2Shape
If controlled hybridization is used to develop new grapevine varieties, then unique berry characteristics can be achieved, but the breeding time required increases
Solution Approach 1:
The hybridization process merged genetic traits for early ripening from one parent with unique berry shape characteristics from the other, achieving both the obtuse ovate shape and July 18 ripening date in the new variety
3Stability of the object's composition
If asexual propagation is used to maintain variety characteristics, then distinguishing traits are preserved, but propagation time and effort are required
Solution Approach 1:
The variety was first asexually propagated in December 2020 using hardwood cuttings before commercial propagation, establishing a headstart for maintaining the unique characteristics of large (7.6g), early-ripening (July 18), obtuse ovate berries while preparing for future production
Data Source
AI summary
The new variety of grapevine ‘SUGRA69’ is characterized by the production of a large-sized, green and obtuse ovate berry with an early season ripening date. The berries of ‘SUGRA69’ are moderately firm and very juicy.