Nectarine Tree Sunectwentytwo Early Ripening Large Fruit

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Solution Overview

Problem

There is a need for a new and distinct variety of nectarine that ripens early and has larger fruit size, addressing the limitations of existing varieties in terms of harvest timing and fruit size.

Innovation Solution

The development of Prunus persica var. nucipersica cv. 'Sunectwentytwo', which was hybridized in 2003 and selected in 2005, characterized by early harvest and large-sized fruit, resulting from crossing 'NE117' as the seed parent with bulked pollen of several low chill Sun World nectarine selections, and propagated by budding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If early-ripening nectarine varieties are used, then harvest time is reduced, but fruit size is smaller

Engineering Contradiction:

Improveharvest timeVSAvoidfruit size

Core Design Contradiction:

Loss of timeVSVolume of moving object

Solution Approach 1:

The patent merges the early-ripening trait from one parent variety with the large fruit size trait from another parent variety through hybridization. The resulting 'Sunectwentytwo' variety combines these previously separate characteristics into a single cultivar, achieving both early harvest (14 days earlier than parent 'NE117') and large fruit size (70mm diameter versus 62mm for comparison variety 'April Glo').

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The hybridization process changes the genetic parameters of the nectarine variety to simultaneously express early ripening and large fruit size. By altering the genetic composition through crossing different parent varieties, the offspring exhibits modified parameters for both ripening time and fruit dimensions, breaking the traditional trade-off between these two characteristics.

Inventive Principle:

Principle #35Parameter changes

2Volume of moving object

If late-ripening varieties are used, then fruit size is larger, but harvest time is delayed

Engineering Contradiction:

Improvefruit sizeVSAvoidharvest time

Core Design Contradiction:

Volume of moving objectVSLoss of time

Solution Approach 1:

The patent combines the large fruit size characteristic from late-ripening varieties with the early ripening trait from early-maturing varieties. The hybrid 'Sunectwentytwo' inherits the large fruit dimensions (comparable to or exceeding late-ripening varieties) while simultaneously acquiring the early ripening gene from the other parent, thus merging traits that traditionally appeared in separate varieties.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If hybridization is performed to combine traits, then new characteristics are achieved, but breeding complexity increases

Engineering Contradiction:

Improvevariety characteristicsVSAvoidbreeding process

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The breeding program utilizes self-service mechanisms where the hybridization process naturally selects for desirable traits through observed performance in field trials. The breeders evaluated multiple progeny and selected those exhibiting the desired combination of early ripening and large size, allowing the biological process itself to perform part of the selection work rather than requiring complex artificial intervention systems.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUSPP22448P3Nectarine tree named `Sunectwentytwo`

Publication Date: 2012.01.10 SUN WORLD INT LLC

AI summary

A new and distinct nectarine tree variety, Prunus persica var. nucipersica, cv. ‘Sunectwentytwo’ is characterized by early harvest and large sized fruit.