X-ray imaging of 30 year old wine grape wood reveals cumulative impacts of rootstocks on scion secondary growth and harvest index
Authors/Creators
- 1. Michigan State University
Description
Annual rings from vines in a 30 year old, California rootstock trial were measured to determine the effects of 15 different rootstocks on Chardonnay and Cabernet Sauvignon scions. Viticultural traits measuring vegetative growth, yield, berry quality, and nutrient uptake were measured at the beginning and end of the lifetime of the vineyard.
X-ray Computed Tomography (CT) was used to measure ring widths in 103 vines. Ring width was modeled as a function of ring number using a negative exponential model. Early and late wood ring widths, cambium width, and scion trunk radius were correlated with 27 traits.
Modeling of annual ring width shows that scions alter the width of the first rings but that rootstocks alter the decay thereafter, consistently shortening ring width throughout the lifetime of the vine. The ratio of yield to vegetative growth, juice pH, photosynthetic assimilation and transpiration rates, and stomatal conductance are correlated with scion trunk radius.
Rootstocks modulate secondary growth over years, altering hydraulic conductance, physiology, and agronomic traits. Rootstocks act in similar but distinct ways from climate to modulate ring width, which borrowing techniques from dendrochronology, can be used to monitor both genetic and environmental effects in woody perennial crop species.
Notes
These usage notes are included as a ReadMe.txt file with the data. This dataset consists of 336 .tif files represeting 2D slices of X-ray CT reconstructions from the scions of 112 grafted vines (3 slices per vine). The filename indicates the following data for each image separated by underscores: scion_rootstock_row_column_slice. Scion is either "Cab" or "Chard" for Cabernet Sauvignon and Chardonnay, respectively. Rootstock indicates the rootstock the scion was grafted to, one of the following 15 varieties: Freedom, Ramsey, 1103 Paulsen, 775 Paulsen, 110 Richter, 3309 Couderc, Kober 5BB, SO4, Teleki 5C, 101-14 MGT, 039-16, 140 Ruggeri, Schwarzman, 420 A, and K51-32. Data from the vine in position row 10, column 3 was mislabeled for its rootstock (the files are labeled as "wrong rootstock") and should be ignored, but it is included for completeness. Row and column represent where in the vineyard the vine was taken from, which can be found on the included map in the .pdf named "vineyard_map.pdf". Each of the three slices is named as "Slice XXX" where XXX indicates the voxel number along the z axis of the original X-ray CT reconstruction the slice was taken. Embedded in each .tif file is landmark data indicating the boundaries of the early and late ring wood for rings 1-8, the remaining outer rings, and the cambium. Viticultural data associated with these vines can be found posted on the GitHub repository at https://github.com/DanChitwood/grapevine_rings
Funding provided by: USDA National Institute of Food and Agriculture*
Crossref Funder Registry ID:
Award Number:
Funding provided by: AgBioResearch, Michigan State University
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100011138
Award Number:
Funding provided by: National Science Foundation Plant Genome Research Program*
Crossref Funder Registry ID:
Award Number: 1546869
Files
grapevine_ring_data.zip
Additional details
Related works
- Is supplemented by
- https://github.com/DanChitwood/grapevine_rings (URL)