Sapphire Raspberry Cultivar Breeding for Firmness and Size
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Solution Overview
Problem
Current floricane fruiting raspberry cultivars often lack a combination of commercial firmness, flavor, and attractiveness, with most being either too small or lacking in productivity for premium fresh fruit marketing, and they may not meet chilling requirements for optimal bud break.
Innovation Solution
The development of the 'Sapphire' cultivar, which combines large, firm, and attractive fruit with high productivity, characterized by its conic fruit shape, deep grayed purple thorns, and specific growing requirements, including over 1000 hours of winter chilling for bud break, distinguishing it from other cultivars.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If floricane fruiting raspberry cultivars are selected for large fruit size, then fruit size is improved, but fruit firmness deteriorates
Solution Approach 1:
The patent applies parameter changes by selecting and breeding for specific genetic combinations that alter the physical and chemical parameters of the fruit. The 'Sapphire' cultivar exhibits a unique combination of large fruit size (3.19 cm length, 2.55 cm width, 8.3 grams weight) while maintaining commercial firmness through controlled breeding from the cross Octavia × XFU-12vf, changing the parameters of fruit dimensions and firmness simultaneously
2Illumination intensity
If floricane fruiting raspberry cultivars are selected for attractive fruit color, then fruit attractiveness is improved, but fruit firmness deteriorates
Solution Approach 1:
The patent changes the color parameter by selecting for a unique bright red fruit color (distinguishing it from the dark red of other floricane cultivars like Wakefield and Crimson Giant) while simultaneously maintaining firmness through the specific genetic cross. This represents a parameter change in color brightness without sacrificing structural strength
3Productivity
If floricane fruiting raspberry cultivars are selected for productivity, then productivity is improved, but fruit size deteriorates
Solution Approach 1:
The patent applies parameter changes by achieving a unique combination of high productivity and large fruit size. The 'Sapphire' cultivar produces larger fruit than all other commercial floricane-bearing cultivars (3.19 cm length vs. smaller dimensions in cultivars like Glen Ample) while maintaining high productivity through vigorous plant growth and abundant flowering
4Reliability
If floricane fruiting raspberry cultivars are selected for spring fruit bearing, then fruit quality is improved, but adaptability to different climates deteriorates
Solution Approach 1:
The patent changes the chilling requirement parameter by establishing that 'Sapphire' requires more than 1000 hours of winter chilling for adequate bud break, making it suitable for northern climates with sufficient cold accumulation but limiting its adaptability to warmer regions like Mexico, the southern U.S., and areas south of Watsonville, Calif.
5Reliability
If floricane fruiting raspberry cultivars are selected for thorn presence, then plant protection is improved, but ease of operation deteriorates
Solution Approach 1:
The patent changes the thorn parameter by producing dark grayed purple thorns that are more numerous (approximately double at the base of the plant compared to other cultivars) and uniformly colored, providing enhanced plant protection while the specific thorn characteristics may impact harvesting operations
Data Source
AI summary
The present invention is a new and distinct floricane fruiting red raspberry cultivar named ‘Sapphire’, which is capable of producing large, attractive, flavorful and firm fruit which has exceptional consumer appeal characteristics. The cultivar is characterized by its thorniness throughout the plant, as described herein, lack of fall or primocane fruiting, its strong and distinctive flavor and firmness and its very large fruit size, weight and morphology, specifically its truncated conic, very uniform, fruit shape with minimal bulginess in its basal region or on its receptacle. ‘Sapphire’ plants are very productive in regions having sufficient chilling to produce sufficient spring bud break. Its high yield, firmness, storage ability and large size make ‘Sapphire’ economical to pick mid to mid late season floricane variety for shipping.