Oxygen-Controlled Seed Priming via Partial Pressure
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Solution Overview
Problem
Current seed priming techniques rely on water control, which faces challenges such as oxygen restriction, high solution volumes, disposal issues, and storability problems, and struggle to precisely stop the priming process, leading to reduced seedling emergence and storability.
Innovation Solution
The method involves controlling seed priming using partial oxygen pressure and carbon dioxide pressure instead of hydration levels, allowing metabolic activity for germination without radicle emergence, and then drying the seeds to maintain desiccation tolerance for storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If water control methods are used for seed priming, then germination speed is improved, but oxygen absorption is restricted and storability deteriorates
Solution Approach 1:
The invention changes the control parameter from water potential to oxygen partial pressure. By regulating oxygen availability instead of water content, the method enables metabolic activation and germination speed improvement while avoiding the harmful effect of oxygen restriction that occurs in water-controlled priming methods.
Solution Approach 2:
The invention replaces the water-based mechanical hydration system with an oxygen-based gaseous control system. This substitution allows seeds to receive adequate oxygen for metabolism while still achieving controlled germination activation, thereby improving both germination speed and storability.
2Manufacturing precision
If osmotic solutions are used for priming, then germination uniformity is improved, but solution volume and disposal problems increase
Solution Approach 1:
The invention extracts and eliminates the need for large volumes of osmotic solutions by replacing them with a gaseous oxygen control system. This extraction removes the disposal problem associated with chemical solutions while maintaining the ability to achieve uniform germination through controlled oxygen partial pressure.
Solution Approach 2:
The invention uses a controlled gaseous atmosphere with regulated oxygen partial pressure instead of liquid osmotic solutions. This inert environment approach provides precise control over seed metabolism and germination uniformity without requiring large quantities of chemical solutions that need disposal.
3Use of energy by moving object
If hydration level is increased for priming, then metabolic activity is enhanced, but desiccation tolerance is lost and storability decreases
Solution Approach 1:
The invention changes the controlling parameter from hydration level to oxygen partial pressure. This allows metabolic activity to be enhanced through controlled oxygen availability without increasing hydration to levels that would cause loss of desiccation tolerance, thereby maintaining storability.
Solution Approach 2:
The invention uses oxygen partial pressure as an intermediary control mechanism to stimulate metabolic activity. This intermediary approach enables germination activation without requiring high hydration levels, thus preserving the seed's desiccation tolerance and storability.
4Manufacturing precision
If water potential is controlled for priming, then germination synchronicity is improved, but precision in stopping the process deteriorates
Solution Approach 1:
The invention changes the control parameter from water potential to oxygen partial pressure, which can be measured and regulated with higher precision using modern gas sensing and control technologies. This enables more precise stopping of the priming process while maintaining germination synchronicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances seed germination speed, synchronicity, and vigor while improving storability and reducing the risk of seed damage, leading to better crop yields and uniform seedling emergence.
Implementation Method 1
Respiration by mature 'dry' seeds (usual moisture content: 10-15%) of course is extremely low when compared with developing or germinating seeds
Data Source
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AI summary
The present invention relates the methods, compositions and devices for priming of plant seed, preferably seed of crop plants, and seeds obtained with said methods, compositions and devices, wherein the metabolic activity necessary for germination of the seed is not controlled by water but rather by the partial oxygen pressure and/or partial carbon dioxide pressure. In the methods of the invention the partial oxygen or carbon dioxide pressure may be measured by means of an oxygen/carbon dioxide sensitive fluorescent dye. The invention further relates to processes for producing a primed seed lot of a plant species and to a container comprising primed seed under an atmosphere with a partial oxygen pressure that is below the critical oxygen pressure.