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 Walton, P. D. Search for Related Content PubMed Articles by Walton, P. D. Agricola Articles by Walton, P. D.

Heterosis in Spring Wheat¹

Two complete diallel crosses, with eight and five parents, were used to study the expression of heterosis in spring wheat cultivars (Triticum aestlvum L.) of Canadian, Mexican and American origin. In both trials general combining ability was important for yield and yield components, as well as for certain morphological characters and for different stages of development. Only in the five-parent diallel cross was specific combining ability measurahle for yield. Evidence indicated that season by F₁ progeny interaction was associated with the expression of heterosis.

Key Words: Diallel cross • Canadian wheat • combining ability • Hybrid vigour • Hybrid wheat • Trillcure aestivum

² Professor, Plant Science Department, University of Alberta, Edmonton, Alberta, Canada.

Received for publication November 12, 1970.