Roma Seedless Grapevine Breeding via Parent Selection
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Solution Overview
Problem
There is a need for new grapevine varieties that combine high vigor, seedlessness, productivity, disease resistance, and desirable fruit characteristics such as size, color, flavor, and taste, which existing varieties do not adequately address.
Innovation Solution
The new grapevine variety 'Roma Seedless' was developed through artificial pollination of 'Red Globe' and 'Crimson' grape varieties, exhibiting medium-to-large seedless berries with rose-pink skin, high productivity, and resistance to diseases, cold, drought, heat, and wind, with excellent handling and storage qualities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If artificial pollination breeding is used to create new grapevine varieties, then seedlessness and fruit quality are improved, but breeding time and complexity increase
Solution Approach 1:
The patent performs preliminary selection of parent varieties with desired traits (Red Globe for fruit quality and Crimson for seedlessness) before conducting the cross-breeding. This preliminary preparation of parent stock with specific characteristics accelerates the breeding process by ensuring the first generation hybrid already possesses the target traits of seedlessness and improved fruit quality, reducing the need for multiple generations of selection.
2Productivity
If grapevine varieties are selected for high productivity, then yield increases, but disease resistance may be compromised
Solution Approach 1:
The patent merges two distinct parent varieties with complementary traits: Red Globe contributes high productivity, large fruit size, and disease resistance, while Crimson contributes seedlessness and good shelf life. The hybridization combines these traits into a single variety that achieves both high yield and disease resistance alongside seedlessness, resolving the trade-off between productivity and reliability.
3Volume of moving object
If grape varieties are bred for larger fruit size, then marketability improves, but vigor and adaptability may decrease
Solution Approach 1:
The patent applies local quality by selecting specific traits from each parent variety for different characteristics: Red Globe contributes vigor, adaptability, and disease resistance, while Crimson contributes seedlessness and shelf life. The resulting hybrid maintains strong vegetative vigor and adaptability from the Red Globe parent while achieving large fruit size through the combination of parental traits, preventing the general weakness that often accompanies large-fruit varieties.
Data Source
AI summary
A new and distinct variety of grapevine is provided which abundantly forms attractive medium-to-large seedless berries having a rose-pink skin coloration in medium-to-large substantially uniform clusters. The fruit displays a sweet crisp flavor and is firm in texture. The fruit commonly is ready for harvest during late October or early November in the San Joaquin Valley of Central California, U.S.A., and displays significant crispness and good eating qualities as a table grape. The fruit firmness renders the fruit well amenable for handling, shipping, and storage. The fruit commonly is more elongated and less round and lighter in coloration than that of the ‘Mara Seedless’ variety (U.S. Plant Pat. No. 19,599).