Stomatal Index SI
Compute the stomatal index in percent as the stomata count times one hundred over the total of stomata plus epidermal cells.
Description
Compute the stomatal index in percent as the stomata count times one hundred over the total of stomata plus epidermal cells.
Stomatal Index SI is a focused biology tool that compute the stomatal index in percent as the stomata count times one hundred over the total of stomata plus epidermal cells. It calculates locally from the values you enter and exposes the result without changing the source observations.1
When to use Stomatal Index SI
Use Stomatal Index SI when you need to compute the stomatal index in percent as the stomata count times one hundred over the total of stomata plus epidermal cells. Enter Stomata cells and Epidermal cells using the definitions and units below so the result can be reproduced.
- Stomata cells
- An integer count or setting greater than or equal to 0, expressed in cells.
- Epidermal cells
- An integer count or setting greater than or equal to 0, expressed in cells.
How Stomatal Index SI calculates the result
The published tool contract uses this rule: Compute the stomatal index in percent as the stomata count times one hundred over the total of stomata plus epidermal cells.1
- Stomatal index
- The calculated stomatal index in %.
Limitations of Stomatal Index SI
The calculation does not propagate measurement uncertainty, sampling error, or biological and chemical variability.
Alternative or Complementary measurements
Retain the original Stomata cells and Epidermal cells values and their units alongside the result. Germination Rate Index is useful when you instead need to compute the germination rate index over two days as (day one count / 1 + day two count / 2) / seeds sown times 100, expressed in percent per day. Seed Vigor Index provides another view by helping you compute the seed vigor index as germination percent times seedling length in centimeters divided by one hundred.
References
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Stomatal conductance — Wikipedia contributors
Similar or alternative tools
- Germination Rate Index
Compute the germination rate index over two days as (day one count / 1 + day two count / 2) / seeds sown times 100, expressed in percent per day.
- Seed Vigor Index
Compute the seed vigor index as germination percent times seedling length in centimeters divided by one hundred.
- Drought Tolerance Index
Compute the drought tolerance index as stressed yield divided by control yield times one hundred.