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 Fowler, D. B. Search for Related Content PubMed Articles by Fowler, D. B. Agricola Articles by Fowler, D. B.

Selection for Winterhardiness in Wheat. II. Variation within Field Trials¹

Differential winterkill is a prerequisite to effective selection among winter wheat (Triticum aestivum L.) strains in field survival trials. However, when differential winterkill does occur it is usually irregular, with the result that experimental error is high. To determine the magnitude of the variability in winter stress levels experienced in field trials and to investigate methods of controlling this source of experimental error, 26 winter wheat cultivars were grown in field trials in 1973 to 1974 and 1974 to 1975 in Saskatchewan, Canada. The wide range of winter survival ability of these cultivars allowed for detection of differences in winter stress levels experienced in each trial. Based on these differences, field stress contour maps were developed. These maps demonstrated that large, rapid changes took place in the levels of winter stress experienced and emphasized the irregular pattern of these changes. The primary cause of this response was attributed to variable snow cover on the test sites. The implications of these observations in selection for winter survival potential under field conditions are discussed.

Key Words: Field survival index • Stress contour maps • Experimental error • Cold hardiness • Winterkill • Triticum aestivum L.

² Research scientist. Crop Dev. Ctr., Univ. of Saskatchewan, Saskatoon, Sask., Canada. S7N 0W0.

Received for publication November 1, 1978.

This article has been cited by other articles:

				T. Yamada, E. S. Jones, N. O. I. Cogan, A. C. Vecchies, T. Nomura, H. Hisano, Y. Shimamoto, K. F. Smith, M. D. Hayward, and J. W. Forster QTL Analysis of Morphological, Developmental, and Winter Hardiness-Associated Traits in Perennial Ryegrass Crop Sci., May 1, 2004; 44(3): 925 - 935. [Abstract] [Full Text] [PDF]

				M. E. S. Nunes and G. R. Smith Electrolyte Leakage Assay Capable of Quantifying Freezing Resistance in Rose Clover Crop Sci., July 1, 2003; 43(4): 1349 - 1357. [Abstract] [Full Text] [PDF]