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 Grogan, C. O. Articles by Francis, C. A. Search for Related Content PubMed Articles by Grogan, C. O. Articles by Francis, C. A. Agricola Articles by Grogan, C. O. Articles by Francis, C. A.

Heterosis in Inbred Source Crosses of Maize (Zea mays L.)¹

This study was designed to determine the variability within maize (Zea mays L.) lines maintained at different stations in the northern maize-growing areas of the U. S., with particular attention to heterotic expression in withinline crosses. There was significant variation in the various characteristics studied in most of the lines, although certain characteristics such as kernel row number and ear diameter showed considerable stability.

The information should be of particular interest to seed producers and certification agencies where variation within lines could have serious consequences or could be used to an advantage in production of related-line single crosses.

Key Words: Long-time inbred lines • Related lines • Corn • Variability

² Professor, Department of Plant Breeding and Biometry, Cornell University, and Maize Specialist, C.I.A.T., Cali, Colombia, respectively. The support of Agway, Inc. is greatly appreciated. Appreciation is expressed also to Dr. Paul Haydock, Visiting Professor (Australia), for his helpful advice for certain of the statistical procedures.

Received for publication November 16, 1971.