Red Rage I Nectarine Hybridization for Fruit Quality and Storage
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Solution Overview
Problem
There is a need for a new variety of nectarine tree that combines desirable traits such as vigor, self-fertility, and specific fruit characteristics like red skin, yellow flesh, and acidic-sweet flavor, while also being adaptable to different growing conditions and suitable for shipping and storage.
Innovation Solution
The 'Red Rage I' nectarine variety is developed through a first-generation cross between 'Kay Diamond VII' and '8P1239' nectarine trees, exhibiting traits like globose leaf glands, early blooming, and larger, oblate fruit with minimal freckling, and is compatible with 'Nemaguard' rootstock for improved growth and shipping quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a large number of peach, nectarine, plum, apricot, and cherry seedlings are hybridized each year, then genetic diversity and selection opportunities are improved, but time consumption and resource investment increase
Solution Approach 1:
The patent applies preliminary action by performing hybridization with carefully selected parent plants before the need for specific traits arises. The inventors pre-crossed 'Kay Diamond VII' nectarine with another nectarine variety to produce seedlings that already possess the desired combination of traits (red skin, yellow flesh, acidic-sweet flavor, vigor, self-fertility), eliminating the need for extensive future hybridization cycles to achieve these characteristics.
2Adaptability or versatility
If open pollinated seeds are grown to capture recessive traits, then genetic variation is improved, but productivity and time efficiency deteriorate
Solution Approach 1:
The patent applies preliminary action by performing controlled hybridization in advance to capture and fix desired recessive traits in the F1 generation. By deliberately crossing selected parent plants, the inventors pre-obtained seedlings with the desired trait combination, avoiding the need for lengthy open-pollination and selection processes later.
Solution Approach 2:
The patent uses controlled cross-pollination as an intermediary mechanism to achieve genetic variation. Instead of relying on random open pollination, the inventors used deliberate controlled breeding between specific parent plants ('Kay Diamond VII' and another nectarine variety) to introduce and fix desired recessive traits efficiently, bridging the gap between genetic diversity goals and productivity constraints.
3Manufacturing precision
If nectarine varieties with red skin and yellow flesh are selected, then market appeal and flavor quality are improved, but genetic uniformity and adaptability to different conditions worsen
Solution Approach 1:
The patent applies segmentation by dividing the genetic contribution into distinct parental components. The F1 seedlings inherit specific traits from each parent: 'Kay Diamond VII' contributes red skin color, yellow flesh color, and acidic-sweet flavor, while the other nectarine parent contributes vigor and self-fertility. This segmented approach to trait inheritance allows the offspring to exhibit a comprehensive set of desirable characteristics that neither parent possessed alone, achieving both quality consistency and adaptability.
Data Source
AI summary
The present invention relates to a new and distinct variety of nectarine tree, Prunus persica, broadly characterized by a medium size, vigorous, hardy, self-fertile, productive and regular bearing tree. The variety has a large showy blossom and blooms during the early season, with a chilling requirement of about 500 hours. The fruit matures under the ecological conditions described in late May, with first picking on May 27, 2021. The fruit is uniform, fairly very large in size, acidic and sweet in flavor, very oblate in shape, clingstone in type, firm in texture, yellow in flesh color, full dark red with very minimal freckling in skin color, and has a bitter tasting kernel.