Felix Corylus Cultivar Resisting Eastern Filbert Blight
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Solution Overview
Problem
Current Corylus avellana cultivars lack resistance to eastern filbert blight and exhibit variability in nut size, shape, and maturity, making them unsuitable for consistent and high-yielding cultivation.
Innovation Solution
The development of the 'Felix' cultivar, resulting from a controlled cross between OSU 384.095 and 'Delta', which exhibits upright growth habit, resistance to eastern filbert blight, and unique DNA markers, ensuring consistent nut characteristics and disease resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current Corylus avellana cultivars are used for cultivation, then cultivation can proceed with existing varieties, but they lack resistance to eastern filbert blight and exhibit variability in nut size, shape, and maturity
Solution Approach 1:
The patent applies parameter changes by developing a new cultivar 'Felix' with specific genetic parameters that provide resistance to eastern filbert blight while maintaining consistent nut characteristics. The controlled cross between OSU 384.095 and 'Delta' created a cultivar with stable inheritance of disease resistance and uniform nut size, shape, and maturity traits, resolving the contradiction between disease resistance and characteristic consistency.
2Productivity
If current Corylus avellana cultivars are used, then existing cultivation methods can be maintained, but they exhibit variability in nut size, shape, and maturity making them unsuitable for consistent high-yielding cultivation
Solution Approach 1:
The 'Felix' cultivar was developed with optimized parameters for yield consistency and nut uniformity. The controlled breeding program selected for stable inheritance of traits including consistent nut size, shape, and maturity timing, enabling high-yielding cultivation with uniform product quality throughout the harvest season.
Solution Approach 2:
The patent employs preliminary action through extensive pre-breeding work and selection processes. Multiple generations of controlled crosses and selections were performed before releasing the 'Felix' cultivar, ensuring that disease resistance and uniform nut characteristics were established prior to commercial cultivation, thereby guaranteeing consistent high yields.
3Reliability
If a controlled cross between OSU 384.095 and 'Delta' is performed, then resistance to eastern filbert blight and unique DNA markers are achieved, but the breeding process requires multiple years of propagation and selection
Solution Approach 1:
The patent applies preliminary action by performing extensive pre-breeding work including controlled crosses, multi-generation selection, and characterization of DNA markers before releasing the cultivar. The preliminary establishment of resistance traits and uniform characteristics in the breeding program accelerated the overall development timeline despite the multi-year propagation process.
Solution Approach 2:
The patent uses DNA marker copying and identification to track inheritance of disease resistance traits through generations. By using molecular markers to copy and identify resistance alleles, the breeding process can efficiently select for desired traits without requiring extensive phenotypic testing, thereby reducing the effective breeding duration.
Data Source
AI summary
A new and distinct cultivar of Corylus plant named ‘Felix’ characterized by an upright plant habit and high vigor, green developing and fully expanded leaves during the spring and summer, resistance to eastern filbert blight caused by the fungus Anisogramma anomala (Peck) E. Wüller, presence of random amplified polymorphic DNA markers 152-800 and AA12-850, expression of incompatibility alleles S15 and S21 in the styles, and DNA fingerprints at 14 of 24 microsatellite marker loci differ from both parents OSU 384.095 and ‘Delta’, and from one parent at an additional 6 marker loci.