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United States Department of Agriculture

Agricultural Research Service

Research Project: ASSESSING DROUGHT TOLERANCE IN NATIONAL SMALL GRAINS COLLECTION (NSGC) ACCESSIONS

Location: Small Grains and Potato Germplasm Research

2013 Annual Report


1a.Objectives (from AD-416):
The objective of this work is to assess drought tolerance in wheat accessions from the National Small Grains Collection, a problem of increasing importance in US wheat production.


1b.Approach (from AD-416):
Key accessions from the NSGC are being genotyped using DArT marker technology and SSR markers. These materials will be tested at the University of Idaho Research and Extension Center in Aberdeen for tolerance to drought. An association genetics approach will be taken to search for relationships between markers and drought tolerance. Data will be reported to the Germplasm Resources Information Network for dissemination to the plant breeding community. Documents SCA with U of ID.


3.Progress Report:

This is the final report for the project 5366-21000-027-08S terminating in September 2012. We completed the initial phase of the project, which involved seed increase of small grains accessions for use in drought screening and the first season of drought screening trials. We were able to categorize accessions based on maturity and plant type to enable selection of a subset of accessions to include in drought-stress treatments in subsequent years. This step was critical as accessions were grouped by maturity for the drought study to enable stress to be applied as specific stages of plant development. After termination of this agreement, the work will continue under project 5366-21000-027-10G. The results relate to Objective 2 of the parent project, “Strategically evaluate small grains genetic resources for priority biotic and abiotic stress resistance.”


Last Modified: 8/22/2014
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