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 Google Scholar Google Scholar Articles by Thompson, C. R. Articles by Cameron, J. W. Search for Related Content PubMed Articles by Thompson, C. R. Articles by Cameron, J. W. Agricola Articles by Thompson, C. R. Articles by Cameron, J. W.

Effects of Ambient Photochemical Air Pollutants on Growth, Yield, and Ear Characters of Two Sweet Corn Hybrids¹

ABSTRACT

Two sweet corn hybrids, ‘Bonanza’ and ‘Monarch Advance’ (Zea mays L.) were evaluated for their relative susceptibility to ambient photochemical air pollutants (principally ozone) in outdoor chambers at Riverside, Calif. The plants were exposed daily to ambient or activated carbon filtered air, from seedling emergence to fresh market harvest. Plant height, tiller number and length, and air-dry weight of stalks were reduced by pollutants in both cultivars. However, the number and fresh weight of marketable primary ears and the number of fully developed kernels were much more severely reduced in ‘Monarch Advance.’ Some acute leaf tissue collapse and premature yellowing and senescence of leaves were prominent in ‘Monarch Advance’ but nearly absent in ‘Bonanza.’ These foliar symptoms agree with previous data on the behavior of the two cultivars in the field.

Key Words: ozone • temperature

¹ Contribution from the Statewide Air Pollution Research Center (SAPRC), and the Dep. of Plant Sci., Univ. of California, Riverside, CA 92502.

² Research Biochemist, Staff Research Associate, and Professor of Horticultural Science, respectively.

Received for publication October 15, 1975.