A real-time, non-invasive, micro-optrode technique for detecting seed viability by using oxygen influx

Area of Science:

• Agricultural Science
• Biotechnology
• Plant Science

Background:

• Accurate seed viability assessment is crucial for effective seed bank management.
• Traditional viability testing methods are often slow, destructive, and can induce premature germination.

Purpose of the Study:

• To introduce and validate a novel micro-optrode technique (MOT) for rapid and non-invasive seed viability quantification.
• To assess the efficacy of MOT across diverse crop species, including soybean, wheat, and oilseed rape.

Main Methods:

• Developed a micro-optrode technique (MOT) to measure real-time oxygen influxes in intact seeds.
• Tested MOT on soybean, wheat, and oilseed rape seeds after 3-hour imbibition, with measurements under 5 minutes per seed.
• Ensured seeds remained in the early imbibition stage, preventing germination during assessment.

Main Results:

• Demonstrated a significant positive correlation between oxygen influxes and seed viability across all tested species.
• Established species-specific linear equations correlating oxygen influx measurements with viability.
• Confirmed the non-invasive nature and speed of MOT, with individual seed screening in approximately 10 seconds.

Conclusions:

• The micro-optrode technique (MOT) provides a reliable, rapid, and cost-effective method for assessing seed viability.
• MOT overcomes the limitations of traditional methods, offering a non-destructive approach for seed quality evaluation.
• This technique has significant potential for application in seed banking, breeding programs, and agricultural research.