BC92915 Raspberry Cultivar Breeding for Disease Resistance and Harvest
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Solution Overview
Problem
Existing raspberry cultivars face challenges in being early season producers, commercially viable, and disease resistant, particularly susceptible to root rot and aphids, with limited machine harvestability and inconsistent fruit size and maturity.
Innovation Solution
The development of the new raspberry cultivar 'BC92915', derived from controlled breeding, exhibits an upright plant habit, large conical fruit, early maturity, and resistance to aphids and root rot, making it suitable for machine harvesting and stable through asexual propagation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If existing raspberry cultivars are used for early season production, then fruit maturity is achieved, but disease resistance (particularly to root rot and aphids) is compromised
Solution Approach 1:
The patent applies parameter changes by creating a new cultivar with fundamentally different genetic parameters that simultaneously achieve early maturity and disease resistance. The breeding program selected for specific trait combinations that altered the plant's biological parameters, resulting in 'BC92915' maturing 7-10 days earlier than commercial standards while exhibiting strong resistance to root rot and aphids through its genetic constitution
2Productivity
If raspberry cultivars are developed for machine harvestability, then commercial viability is improved, but fruit size consistency and plant habit uniformity are compromised
Solution Approach 1:
The patent applies local quality by selecting for specific local traits that enhance machine harvestability while maintaining overall fruit quality. The cultivar was selected for an upright plant habit with laterally positioned fruits that are easily accessible to harvesters, while individual fruit size variation is minimized through controlled breeding. The plant architecture was specifically modified to facilitate mechanical harvesting without sacrificing fruit quality
3Volume of moving object
If raspberry cultivars are bred for larger fruit size, then marketability is improved, but machine harvestability and plant habit uniformity are compromised
Solution Approach 1:
The patent applies dynamics by creating a cultivar where fruit size is optimized for marketability while the plant architecture dynamically adapts to facilitate machine harvesting. The upright habit and lateral fruit positioning create a dynamic spatial arrangement that allows larger fruits to be accessible to harvesters. The breeding program selected for fruits that are large yet positioned in a manner that maintains ease of mechanical removal
Data Source
AI summary
A new cultivar of Rubus idaeus, ‘BC92915’, that is characterized by its upright to semi-upright plant habit, its fruit that is large in size and conical to trapezoidal in shape, its fruit that matures early and machine harvests very well, and its resistance to aphids and root rot.