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Thursday, October 16, 2014

Cross Section of a One Year Old Grape Shoot

Yesterday, in between pounding posts (yes, we're still at it!) I took pictures of one of our grape shoots that had developed its protective periderm to see what the cross section of a one year old grape shoot should look like. Then, I went on line to the Cornell University Fruit Website and found a very good image of the cross section of a one year old shoot which was labeled.
The process of maturation of a one year old grape shoot begins shortly after veraison when the shoot begins to develop its periderm. After the periderm has formed, the one year old shoot is referred to as a cane.

References:
1. Tim Martinson, Assessing Winter Cold Injury of Grape Canes and Trunks, Cornell University, 2011.
2. Edward W. Hellman, Grapevine Structure and Function.

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