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 Hunter, R. B. Articles by Gamble, E. E. Search for Related Content PubMed Articles by Hunter, R. B. Articles by Gamble, E. E. Agricola Articles by Hunter, R. B. Articles by Gamble, E. E.

Effect of Cytoplasmic Source on the Performance of Double-Cross Hybrids in Maize, Zea mays L.¹

"Cytoplasmic effects" were identified in 11 different double cross hybrids by studying the following combinations of inbreds in each hybrid: (AXB) (CxD), (BxA) (CXD), (CXD) (AXB), and (DXC) (AXB). Eleven agronomicharacters were studied over two years and two locations. Significant cytoplasmic effects occurred for all characcers. Certain inbreds and inbred combinations were associated more frequently with cytoplasmic effects than others although cytoplasmic effects were not always related to the presence of a particular inbred. Cytoplasmic effects were reasonably consistent from year to year and location to location. The year by cytoplasm and location by cytoplasm interactions were usually smaller than the year by hybrid and location by hybrid interactions. It would appear to be desirable to evaluate cytoplasms so as to bring together the best combinations of cytoplasm and nuclear genetic materials.

Key Words: reciprocal crosses • maternal effects • cytoplasmic effects

² Lecturer and Professor & Chairman, Department of Crop Science, University of Guelph, Guelph, Canada.

Received for publication July 17, 1967.