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Breeding wheat for resistance to Heterodera avenae in southern Australia has been in progress for nearly 30 years and recently a number of resistant varieties have been released. Early breeding work was hampered by three factors: • a lack of appreciation of the role and extent of the problem, • inaccurate, slow screening methods, ultimately being replaced(More)
OFFICIAL PUBLICATION DATE is handstamped in a limited number of initial copies and is recorded in the Institution's annual report, Smithsonian Year. SERIES COVER DESIGN: Aerial view of Ulawun Volcano, New Britain. Library of Congress Cataloging in Publication Data Main entry under title: Mineral sciences investigations, 1974-1975. (Smithsonian contributions(More)
Phaseolus vulgaris L. and Pisum sativum L., with sap from those indicator plants developing symptoms being tested by agar gel double-diffusion serology against antisera to EAMV and BBSV, and also to broad bean mottle, cowpea chlorotic mottle, cowpea mosaic, and peaenation mosaic viruses. Three isolates were identified as EAMV (Fig. 1) and a subsequent(More)
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