Dehiscence method: a seed-saving, quick and simple viability assessment in rice.

Area of Science:

• Agricultural Science
• Plant Biology
• Seed Technology

Background:

• Accurate seed viability monitoring is crucial for ex situ germplasm preservation and detecting deterioration.
• Existing non-invasive rapid sensing methods (NRSs) lack precision and simplicity, and require many seeds.
• Traditional germination tests are precise but time-consuming and labor-intensive, impacting seed conservation efforts.

Purpose of the Study:

• To develop a precise, low-invasive, simple, and quick method for assessing seed viability.
• To evaluate the efficacy of analyzing seed dehiscence patterns for germination prediction.

Main Methods:

• Analyzing the pattern of seed dehiscence (seed coat rupture) followed by embryonic protrusion.
• Correlating dehiscence percentage at 48 hours (D(48)) with germination rate in rice varieties.
• Testing the method's speed and seed-saving capabilities compared to traditional tetrazolium tests.

Main Results:

• Dehiscence percentage at 48 hours (D(48)) significantly correlated with germination rate across tested rice seed lots.
• Final germination percentage was found to be D(48) plus 5.
• Over 70% of seeds survived post-dehiscence desiccation, with 1 mM hydrogen peroxide improving survival.

Conclusions:

• The dehiscence method is more precise, easier to use, faster, and more seed-saving than current NRSs and traditional methods for rice seed viability assessment.
• The method shows potential for broader application across diverse species and conditions with modifications, including artificial intelligence integration.