My Account: Log In | Join | Renew
Search
Author
Title
Vol.
Issue
Year
1st Page

Abstract

 

This article in CS

  1. Vol. 47 No. 4, p. 1619-1627
     
    Received: Nov 22, 2006
    Published: July, 2007


    * Corresponding author(s): ajpatton@uark.edu
 View
 Download
 Alerts
 Permissions
 Share

doi:10.2135/cropsci2006.11.0737

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

  1. Aaron J. Patton *a and
  2. Zachary J. Reicherb
  1. 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

Abstract

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 (r 2 = 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.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © 2007. Crop Science Society of AmericaCrop Science Society of America