Multiplex Signature: How to Read the Time Profile?

Color, Harvest, Multiplex, Period 4

Multiplex Signature

Multiplex Signature provides useful insight to answer the following questions around  the timing of picking decisions:

  1. Does it make sense to harvest earlier if the rate of total anthocyanin decline is too fast before harvest?
  2. Does it make sense to modify cluster microclimate to preserve total anthocyanins content until harvest? (such as lowering vine temperature with misting, shade cloth, trellising, etc.)

How to Use Multiplex Signature?

By measuring total anthocyanin levels every seven to ten days between veraison and harvest, it is possible to measure both the speed and the shape of total anthocyanin accumulation.  This insight gives winemakers new abilities to further refine decisions approaching harvest.

Below are two curves of total anthocyanin accumulation obtained using Multiplex Signature but with different profiles of total anthocyanins accumulation:

Multiplex Signature Study

Figure 1: time profile of total anthocyanin levels for two distinct blocks; rapid accumulation in yellow; slow accumulation in green

In Figure 1 we can see that color accumulation happens at a faster rate in the yellow block compared to the green block. Faster total anthocyanin accumulation rates are reported to correlate with higher wine color density. (For more information on this topic, click  here).

After the peak value has been reached, Figure 1 shows that yellow block is more prone to color loss (declining trend) whereas green block keeps its total anthocyanins intact (leveling off trend). Typically, total anthocyanin levels are expected to decline faster when berry temperatures are excessively high. If high temperatures trigger a decline of total anthocyanins, aromas are also expected to evolve rapidly toward a different profile.

By using Multiplex Signature, it is possible to refine the timing of harvest. By monitoring whether a decline in total anthocyanin levels are observed before harvest it is possible to take action accordingly and preserve fruit characteristics throughout contrasted seasons.

CONCLUSION

Multiplex signature helps further refine the timing of your picking decision based on  the time profile of total anthocyanin variations.

For more information relative to the Multiplex Signature, click here

Fruition Sciences

At Fruition Sciences, we acknowledge uniqueness, natural abilities and potential growth for plants and people. While respecting tradition, we provide winemakers with a highly integrated, terroir and vintage specific, data driven web application.

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