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United States Department of Agriculture

Agricultural Research Service

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Research Project: Evaluation of USDA-ARS Nematode Resistant Rootstocks

Location: Grape Genetics Research

Project Number: 8060-21220-006-12
Project Type: Specific Cooperative Agreement

Start Date: Dec 01, 2013
End Date: Nov 30, 2016

Objective:
The USDA-ARS Grape Genetics Research Unit (GGRU) at Geneva, NY has a critical need for evaluating its nematode resistant rootstock breeding lines currently growing at the UC Kearney Agricultural Research and Extension Center (KARE) in Parlier, California. GGRU currently does not have the resources and horticultural expertise to carry out the evaluation. Researchers from UC-KARE, on the other hand, have the complementary expertise and also the resource and interest to assist GGRU in evaluating these rootstocks. To leverage these complementary expertise and capabilities, these parties wish to enter a cooperative research agreement to accelerate the process of identifying desirable rootstocks for future evaluation among the hundreds of rootstock breeding lines GGRU has been growing at UC-KARE. The specific objectives of this proposed project are to: 1) evaluate a set of 22 rootstocks grafted to scions for their potential as commercial rootstocks to release to grape industry; and 2) identify a group of elite candidate rootstocks from several hundred rootstock mothervines for future evaluation of their usefulness to grape growers planting vineyards in root-knot nematode infested soils.

Approach:
1. We will form a collaborative research team to work on this project. 2. There are primarily two groups of rootstock selections to evaluate. The first group consists of 22 rootstock selections grafted to scions. The second group consists of several hundred rootstock mothervines which have matured and need to be evaluated for horticultural characteristics that would identify them as appropriate selections for continued rootstock evaluation. 3. Dr. Fidelibus will evaluate the rootstock mothervines for various horticultural characteristics. 4. Dr. Zhong will evaluate nematode resistance and propagation ability of the rootstocks. 5. The successful vine candidates from the above evaluations will be grafted to a scion and planted at UC-KARE (and grower’s root-knot infested sites) for further performance measurements. These trials will collect data that will be submitted to the USDA, ARS for further evaluation. 6. Grafted rootstock selections will be jointly evaluated. 7. We will distribute research results through field demonstration and other means.

Last Modified: 12/19/2014
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