Grifon-7 Maitake Mushroom Breeding for Yield and Appearance
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Solution Overview
Problem
Existing Maitake mushroom varieties face challenges in large-scale cultivation due to difficulty in controlling culture environment, leading to issues with appearance, yield, and storability, with previous varieties like Hokuto NT-100 and Grifon120 having weaknesses such as discoloration and thin cap surfaces.
Innovation Solution
The development of the new Maitake mushroom variety 'Grifon-7' through repeated breeding, characterized by a thick cap surface color, white underside, excellent cultivability, high yield, and stability, reproducibility, and uniformity, achieved by isolating and crossing fungal strains with dominant traits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Hokuto NT-100 variety is cultivated, then cultivability and yield are improved, but the under-face of the cap stains easily making appearance quality poor
Solution Approach 1:
The patent applies local quality by selectively improving specific parts of the mushroom - the cap surface coloration and the under-face whiteness - while maintaining overall cultivability. The breeding program targeted specific local characteristics (thick colored cap surface, white under-face) rather than attempting to improve all attributes uniformly, thus resolving the contradiction between yield and appearance quality.
2Manufacturing precision
If Grifon120 variety is cultivated, then appearance quality with white under-face is improved, but the cap surface color becomes thin making it look less fresh
Solution Approach 1:
The patent merges multiple desirable traits from different parent varieties into a single unified variety. By combining the white under-face characteristic from Grifon120 with the thick cap surface coloration from other strains, the invention creates a mushroom that simultaneously exhibits both traits without the deficiencies of the parents, thus resolving the contradiction between appearance quality and cap surface thickness.
3Stability of the object's composition
If wild Maitake strain is used for cultivation, then natural characteristics are preserved, but it is difficult to control culture environment leading to poor stability
Solution Approach 1:
The patent applies parameter changes by systematically modifying the genetic parameters of the mushroom through controlled breeding. By adjusting genetic composition through repeated cross-breeding of selected strains with dominant traits, the invention creates a variety that maintains stable cultural characteristics while adapting well to controlled cultivation environments, thus resolving the contradiction between culture stability and environmental adaptability.
Data Source
AI summary
The present variety of mushroom plant named ‘Grifon-7’ was cultivated by the collecting and repeated breeding of Maitake mushrooms having dominant traits, which has good qualitative characteristics and appearance, thick color at the cap surface, white color at the back side of the cap, and excellent cultivability and high yields. This edible mushroom is exquisite in stability, reproducibility and uniformity when being produced.