Shiitake Mushroom HS911 Breeding for Light Dry Weight
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Solution Overview
Problem
There is a need for a new Shiitake mushroom variety with specific growth characteristics, such as medium growth rate, medium to small-size scales, and a slender stipe, which are not adequately met by existing varieties like 'Hokken 600 go' and 'HS73', particularly in terms of dry weight at harvest maturity.
Innovation Solution
The development of the Shiitake mushroom variety 'HS911' with a medium growth rate, medium to small-size scales, and a slender stipe, resulting from crossing 'HS788' and 'HL8516', which exhibits distinct characteristics including scale distribution over the whole cap, stipe shape, and crinkly gill shape, and is stable after physiological and genetic tests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If existing varieties like 'Hokken 600 go' and 'HS73' are used, then cultivation is relatively simple, but they do not meet the specific requirements for medium growth rate, medium to small-size scales, and very light dry weight at harvest maturity
Solution Approach 1:
The patent applies parameter changes by developing a new mushroom variety with specific controlled parameters: growth rate (4.93 mm/day at 25°C), scale size (2.91 mm), stipe thickness (13.43 mm), and dry weight (4.10 g). These parameter specifications resolve the contradiction by precisely defining the growth characteristics while maintaining standard cultivation requirements.
2Manufacturing precision
If the variety 'HS911' is developed with specific characteristics, then growth rate, scale size, and dry weight are optimized, but cultivation requirements become more specific
Solution Approach 1:
The patent specifies precise growth parameters for the HS911 variety including medium growth rate (4.93 mm/day), small scale size (2.91 mm), and light dry weight (4.10 g). These parameter definitions resolve the technical contradiction by establishing clear breeding targets while the patent confirms standard cultivation methods apply, maintaining ease of manufacture.
3Manufacturing precision
If crossing parent varieties 'HS788' and 'HL8516' is performed to create 'HS911', then distinct characteristics are achieved, but breeding complexity increases
Solution Approach 1:
The patent applies parameter changes through controlled cross-breeding of parent varieties HS788 and HL8516 to produce HS911 with specific parameters: medium growth rate, small scale size (2.91 mm), and light dry weight (4.10 g). This resolves the contradiction by systematically controlling breeding parameters to achieve precise variety characteristics.
Solution Approach 2:
The patent employs feedback mechanisms in the breeding process by conducting physiological characteristic tests and genetic characteristic tests to verify the stability of the new variety. This feedback loop ensures that the crossed variety HS911 consistently exhibits the desired parameters of medium growth rate, small scales, and light dry weight, resolving the contradiction between breeding complexity and characteristic precision.
Data Source
AI summary
A new variety of shiitake mushroom ‘HS911’ that has a medium growth rate, medium to small-size scales, a slender stipe, and a very light dry weight at harvest maturity.