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

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Bostwick, D. E. Articles by Shaner, G. Search for Related Content PubMed Articles by Bostwick, D. E. Articles by Shaner, G. Agricola Articles by Bostwick, D. E. Articles by Shaner, G.

Inheritance of Septoria Glume Blotch Resistance in Wheat

Plant Sciences Dep., of Univ. of Arizona, Tucson, AZ 85721
Dep. of Agronomy, Purdue Univ., West Lafayette, IN 47907
Dep. of Botany and Plant Pathology, Purdue Univ., West Lafayette, IN 47907

^* Corresponding author.

Incorporation of resistance to septoria glume blotch, caused by Stagonospora nodorum (Berk.) Castellani & E.G. Germano, into wheat (Triticum aestivum L.) is complex because resistance is quantitatively inherited. The Brazilian wheat ‘Cotipora’ expresses a high level of resistance to this pathogen. Crosses were made between Cotipora and the susceptible Purdue line, P831791A1-1-6. Populations of parents, F₁, F₂, BCF₁, and BCF₂ were inoculated with a conidial suspension of the pathogen containing 2.5 x l0⁶ spores mL^–1 and given a moist period of 52 h. Percentage of diseased tissue was estimated on the spikes and flag leaves four times over a 20-d period, and an area under disease progress curve (AUDPC) was calculated. Correlations between AUDPCs of spike and flag leaf in the F₂ and BCF₁ populations were 0.312 and 0.283, respectively, indicating that resistance is at least partially controlled by different genes in these two plant organs. Resistance was partially dominant in the F₁ generation in both the spike and flag leaf. In the F₂, BCF₁, and BCF₂ generations, however, dominant gene action was not evident. The gene number estimate for the spike reaction was 3.16. Broad sense heritability estimates were 0.51 and 0.34 for the spike and flag leaf reactions to S. nodorum, respectively. Cotipora is a valuable source of S. nodorum resistance because of its high level of resistance expressed in the spike and flag leaves.

Received for publication April 10, 1992.

This article has been cited by other articles:

				J. Uphaus, E. Walker, M. Shankar, H. Golzar, R. Loughman, M. Francki, and H. Ohm Quantitative Trait Loci Identified for Resistance to Stagonospora Glume Blotch in Wheat in the USA and Australia Crop Sci., September 1, 2007; 47(5): 1813 - 1822. [Abstract] [Full Text] [PDF]

				J. Feng, H. Ma, and G. R. Hughes Genetics of Resistance to Stagonospora Nodorum Blotch of Hexaploid Wheat Crop Sci., November 1, 2004; 44(6): 2043 - 2048. [Abstract] [Full Text] [PDF]