What is seed viability?

Seed viability is the measure of how many seeds in a batch are alive and have the potential to germinate under suitable conditions. It's a key indicator of seed quality.

How does this differ from a germination rate test?

While related, they can differ. A germination test measures actual sprouting. A viability test, like the tetrazolium (TZ) test, can determine if a seed is alive (respiring) even if it's dormant and might not sprout immediately. For practical purposes, a simple germination test is often used to estimate viability.

Seed Viability Calculator

Estimate the percentage of viable seeds in a batch.

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