HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Related articles in Crop Science Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Bonman, J. M. Articles by Steffenson, B. J. Search for Related Content PubMed Articles by Bonman, J. M. Articles by Steffenson, B. J. Agricola Articles by Bonman, J. M. Articles by Steffenson, B. J. Related Collections Insect Resistance Other Grain Crops Plant Disease

PLANT GENETIC RESOURCES

Disease and Insect Resistance in Cultivated Barley Accessions from the USDA National Small Grains Collection

^a USDA-ARS, Small Grains and Potato Germplasm Research Unit, 1691 South 2700 West, Aberdeen, ID 83201
^b Dep. of Agronomy and Range Science, Univ. of California, Davis, CA 95616
^c Dep. of Plant Pathology, Univ. of Minnesota, St. Paul, MN 55018

^* Corresponding author (mbonman{at}uidaho.edu)

Cultivated barley (Hordeum vulgare subsp. vulgare L.) accessions from the USDA-ARS National Small Grains Collection (NSGC) have been tested systematically for the past 20 yr for disease and insect resistance. In this study, we analyzed the resistance to barley yellow dwarf (BYD), spot blotch (SB) caused by Cochliobolus sativus (Ito and Kuribayashi) Drechs. ex Dastur, net blotch (NB) caused by Pyrenophora teres f. teres Drechs., stripe rust (SR) caused by Puccinia striiformis Westend. f. sp. hordei, and Russian wheat aphid (RWA), Diuraphis noxia (Mordvilko), with respect to (i) geographic origin of resistant accessions, (ii) relationship to other NSGC descriptor data, and (iii) relationships among resistances. "Centers of concentration" for certain resistances were identified: eastern Africa for several diseases, western Turkey and the Caucasus for SR resistance, eastern Asia for adult plant resistance to NB, and south-central Asia for RWA resistance. Stripe rust resistance was also associated with accessions originating from high altitude in eastern Africa (Ethiopia). Various associations between resistances and grain descriptors, plant habit, and landrace status were also found. Forty-eight accessions showed multiple resistances on the basis of the field disease data and the RWA greenhouse data. Many of these resistant accessions were from Ethiopia, and many were of unknown origin. Stripe rust testing in California and Bolivia supported the conclusion that winter-habit accessions were more resistant to the disease than were spring-habit accessions. Information from this study will be used to guide future NSGC acquisition and evaluation efforts.

Related articles in Crop Science:

THIS ISSUE IN CROP SCIENCE

Crop Science 2005 45: vii. [Full Text]