Primocane Raspberry Breeding for Late Harvest and Uniform Fruit
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Solution Overview
Problem
Existing raspberry varieties in temperate climates face challenges in producing a late fall harvest, have inconsistent fruit size and shape, and are susceptible to certain pests and diseases, lacking distinct characteristics that differentiate them from other varieties.
Innovation Solution
A new red raspberry variety, 'Crimson Blush', developed through controlled breeding, exhibits unique traits such as late primocane harvest, tall upright canes, sparse prickles, and bright, conic-shaped fruit, adapted for west central New York's climate and protected cultivation, offering high yields and resistance to some diseases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing raspberry varieties are grown in temperate climates, then they can produce fruit, but they face challenges in producing a late fall harvest and have inconsistent fruit size and shape
Solution Approach 1:
The patent applies parameter changes by selecting and breeding for specific genetic traits that alter the plant's developmental parameters. The 'Crimson Blush' variety was developed through controlled hand-pollinated crosses to achieve specific characteristics including late fall harvest timing, consistent conic fruit shape, and uniform fruit size, thereby resolving the contradiction between extended harvest season and fruit consistency
2Weight of moving object
If raspberry varieties are bred for larger fruit size, then fruit weight increases, but fruit shape consistency and uniformity may be compromised
Solution Approach 1:
The patent applies local quality by ensuring that the enlarged fruit size is achieved with uniform distribution of fruit characteristics throughout the crop. The 'Crimson Blush' variety produces large conic fruit (mean weight 3.1g primocane, 4.0g floricane) with consistent shape, color, and size uniformity, demonstrating that localized breeding for specific fruit quality traits can simultaneously improve both size and uniformity
3Duration of action of moving object
If raspberry canes are bred for taller stature to extend harvest season, then late fall harvest is achieved, but structural stability and resistance to lodging may be reduced
Solution Approach 1:
The patent applies composite materials by developing canes with复合 characteristics - the 'Crimson Blush' variety produces very tall upright canes (2.3-2.5m) that maintain structural integrity through a combination of cane thickness (8-10mm diameter), appropriate prickle distribution for structural support, and optimized wood density, thereby achieving both extended harvest duration and adequate structural stability
4Productivity
If raspberry varieties are selected for high yield, then productivity increases, but susceptibility to pests and diseases may increase
Solution Approach 1:
The patent applies the blessing in disguise principle by selecting parent varieties with complementary traits - NY11-25 contributed concentrated fruiting habit and large fruit size, while NY12-14 contributed light red firm fleshed fruit and presumably disease resistance. The resulting 'Crimson Blush' variety achieves high yields (concentrated on top 1/3 of tall canes) while incorporating resistance to pests and diseases from the diverse genetic background
Data Source
AI summary
This invention relates to a new and distinct primocane bearing red raspberry plant designated as ‘Crimson Blush’ primarily adapted to growing conditions of west central New York and other regions of similar climate. The new plant is primarily characterized by very tall canes, conical fruit that is longer than broad, a late season primocane production period, concentrated display of fruit and light red fruit color.