About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in CS

  1. Vol. 11 No. 1, p. 114-115
     
    Received: Aug 13, 1970
    Published: Jan, 1971


 View
 Download
 Alerts
 Permissions
 Share

doi:10.2135/cropsci1971.0011183X001100010040x

Resistance of Selected Alfalfa Strains to Ozone1

  1. R. K. Howell,
  2. T. E. Devine and
  3. C. H. Hanson2

Abstract

Abstract

Fourteen strains of alfalfa, Medicago sativa L., were evaluated for sensitivity to ozone. Plants were exposed to 20 parts per hundred million (pphm) v/v for 4 hr at 26C, 92% relative humidity, and an illumination of 2,000 ft-c. The variety ‘Team,’ developed partially in greenhouses and routinely selected for resistance to foliar injury, was more tolerant of ozone than varieties not so selected. We believe that this is the first report demonstrating the effectiveness of greenhouse selection, during periods of high levels of air pollutants, as part of a program to expedite the development of plant varieties resistant to phytotoxicants.

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

Copyright © .