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

This Article Figures Only Full Text 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 Patton, A. J. Articles by Reicher, Z. J. Search for Related Content PubMed Articles by Patton, A. J. Articles by Reicher, Z. J. Agricola Articles by Patton, A. J. Articles by Reicher, Z. J. Related Collections Temperature Stress Turfgrass

TURFGRASS SCIENCE

Zoysiagrass Species and Genotypes Differ in Their Winter Injury and Freeze Tolerance

^a Dep. of Horticulture, Univ. of Arkansas, 316 Plant Sciences Bldg., Fayetteville, AR 72701
^b Dep. of Agronomy, Purdue Univ., 915 W. State St., West Lafayette, IN 47907-2054. Purdue Univ. Agric. Exp. Stn. Journal 2006-18055

^* Corresponding author (ajpatton{at}uark.edu).

Lack of cold hardiness may limit widespread use of newly released zoysiagrass (Zoysia spp.) cultivars in the transition zone. Our objectives were to quantify differences in the winter injury of 35 zoysiagrass genotypes in field plots in West Lafayette, IN, and the freeze tolerance of 13 genotypes in a cold stress simulator as well as determine the relationship between leaf width, establishment rate, and autumn growth with winter injury. Winter injury varied between years and among genotypes in the field study. Zoysia japonica Steud. genotypes had less winter injury each year than Z. matrella (L.) Merr. genotypes. Genotypes of Z. japonica available as seed had less winter injury (2% in both years) than genotypes of Z. japonica (41%, 2005; 54%, 2006) and Z. matrella (51%, 2005; 73%, 2006) available only as vegetative propagules. ‘Meyer’, ‘Chinese Common’, and ‘Zenith’ were the commercially available cultivars exhibiting the least winter injury (<7%) in both years, whereas ‘Victoria’, ‘DeAnza’, ‘Diamond’, and ‘Empress’ had the most winter injury (>88%) both years. There was a relationship (r² = 0.48, P = 0.0088) between freeze tolerance (LT₅₀) in the cold stress simulator and winter injury in the field. Freeze tolerance ranged from –8.4°C (Diamond) to –11.5°C (Meyer and Zenith). Meyer has been the industry standard for zoysiagrass, but our research has identified other commercially available cultivars and genotypes with winter injury similar to Meyer.

Abbreviations: DAP, days after plugging • EL, electrolyte leakage • LT₅₀ or freeze tolerance, lethal temperature killing 50% of the plants

This article has been cited by other articles:

				A. J. Patton, S. M. Cunningham, J. J. Volenec, and Z. J. Reicher Differences in Freeze Tolerance of Zoysiagrasses: II. Carbohydrate and Proline Accumulation Crop Sci., September 1, 2007; 47(5): 2170 - 2181. [Abstract] [Full Text] [PDF]