AbstractA group of 69 rice cultivars with diverse degrees of resistance to rice blast disease (at least in a qualitative sense) was chosen for a detailed study of some components of race non‐specific resistance, i.e. relative disease efficiency, latent period, and sporulation capacity. Large differences amongst cultivars were found. The overlapping of the normal curves for the qualitative reaction and the components of race non‐specific resistance point out the difficulties of rapid screening for blast resistance by simple observation in the field. One approach to overcome these difficulties could be to use component(s) analysis in the evaluation of rice germplasm to identify parents or progeny having the attributes of race non‐specific resistance.

Journal of PhytopathologyVolume 100, Issue 2 p. 143-149 A Relationship Between Initial Inoculum and Apparent Infection Rate in a Set of Disease Progress Data for Powdery Mildew on Wheat D. I. Rouse, Corresponding Author D. I. Rouse Department of Plant Pathology, The Pennsylvania State University Authors' addresses: Dr. D. I. ROUSE, Department of Plant Pathology, University of Wisconsin, Madison, WI 53706 Authors' addresses: Dr. D. R. MACKENZIE and Dr. R. R. NELSON, Department of Plant Pathology, Pennsylvania State University, University Park, PA 16082 (U.S.A.).Search for more papers by this authorD. R. Mackenzie, Corresponding Author D. R. Mackenzie Department of Plant Pathology, The Pennsylvania State University Authors' addresses: Dr. D. I. ROUSE, Department of Plant Pathology, University of Wisconsin, Madison, WI 53706 Authors' addresses: Dr. D. R. MACKENZIE and Dr. R. R. NELSON, Department of Plant Pathology, Pennsylvania State University, University Park, PA 16082 (U.S.A.).Search for more papers by this authorR. R. Nelson, Corresponding Author R. R. Nelson Department of Plant Pathology, The Pennsylvania State University Authors' addresses: Dr. D. I. ROUSE, Department of Plant Pathology, University of Wisconsin, Madison, WI 53706 Authors' addresses: Dr. D. R. MACKENZIE and Dr. R. R. NELSON, Department of Plant Pathology, Pennsylvania State University, University Park, PA 16082 (U.S.A.).Search for more papers by this author D. I. Rouse, Corresponding Author D. I. Rouse Department of Plant Pathology, The Pennsylvania State University Authors' addresses: Dr. D. I. ROUSE, Department of Plant Pathology, University of Wisconsin, Madison, WI 53706 Authors' addresses: Dr. D. R. MACKENZIE and Dr. R. R. NELSON, Department of Plant Pathology, Pennsylvania State University, University Park, PA 16082 (U.S.A.).Search for more papers by this authorD. R. Mackenzie, Corresponding Author D. R. Mackenzie Department of Plant Pathology, The Pennsylvania State University Authors' addresses: Dr. D. I. ROUSE, Department of Plant Pathology, University of Wisconsin, Madison, WI 53706 Authors' addresses: Dr. D. R. MACKENZIE and Dr. R. R. NELSON, Department of Plant Pathology, Pennsylvania State University, University Park, PA 16082 (U.S.A.).Search for more papers by this authorR. R. Nelson, Corresponding Author R. R. Nelson Department of Plant Pathology, The Pennsylvania State University Authors' addresses: Dr. D. I. ROUSE, Department of Plant Pathology, University of Wisconsin, Madison, WI 53706 Authors' addresses: Dr. D. R. MACKENZIE and Dr. R. R. NELSON, Department of Plant Pathology, Pennsylvania State University, University Park, PA 16082 (U.S.A.).Search for more papers by this author First published: February 1981 https://doi.org/10.1111/j.1439-0434.1981.tb04632.xCitations: 17 With 3 figures AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Citing Literature Volume100, Issue2February 1981Pages 143-149 RelatedInformation