Skip Navigation

This Article
Right arrow FREE Full Text (PDF) Freely available
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (23)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Abedon, B. G.
Right arrow Articles by Tracy, W. F.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Abedon, B. G.
Right arrow Articles by Tracy, W. F.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

The Journal of Heredity 1996:87(3):219-223
© 1996 The American Genetic Association 87:219-223

research-article

Corngrass 1 of Maize (Zea mays L.) Delays Development of Adult Plant Resistance to Common Rust (Puccinia sorghi Schw.) and European Corn Borer (Ostrinia nubilalis Hubner)

B. G. Abedon, and W. F. Tracy

From the Department of Agronomy, University of Wisconsin-Madison 1575 Linden Dr., Madison, WI 53706

Corresponding Editor: Elizabeth Anne Zimmer

Abstract

Based on morphological evidence, researchers have proposed that Corngrass1 (Cg1) of maize (Zea mays L.) is a heterochronic mutation that prolongs the juvenile-vegetative phase because distal tissues display juvenile traits that normally occur only basally. Physiological or biochemical evidence in support of this hypothesis is lacking. Disease and insect resistance often depends on physiological, biochemical, and morphological factors and can vary during ontogeny. We evaluated resistance to common rust (Puccinia sorghi Schw.) and European corn borer (Ostrinia nubilalis Hubner) in Cg1 and wild-type segregating families in order to test the hypothesis that Cg1 is a heterochronic mutation that extends the juvenile-vegetative phase. In backgrounds with high expression, Cg1 mid-whorl leaves had similar resistance as Cg1 and wild-type seedling leaves, whereas wild-type mid-whorl leaves differed in resistance from the other three leaf types. In the Mo17 background, which has reduced Cg1 expression, Cg1 mid-whorl leaves had resistance levels intermediate between wild-type seedling and mid-whorl levels. These results support the hypothesis that Cg1 prolongs the juvenile-vegetative phase and suggest that heterochrony may be among the factors responsible for disease and insect resistance in normal populations of maize.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 Crop Sci.Home page
C. F. Basso, M. M. Hurkman, E. S. Riedeman, and W. F. Tracy
Divergent Selection for Vegetative Phase Change in Maize and Indirect Effects on Response to Puccinia sorghi
Crop Sci., May 1, 2008; 48(3): 992 - 999.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
T. Iwai, S. Seo, I. Mitsuhara, and Y. Ohashi
Probenazole-Induced Accumulation of Salicylic Acid Confers Resistance to Magnaporthe grisea in Adult Rice Plants
Plant Cell Physiol., July 1, 2007; 48(7): 915 - 924.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
K. Hugot, M.-P. Riviere, C. Moreilhon, M. A. Dayem, J. Cozzitorto, G. Arbiol, P. Barbry, C. Weiss, and E. Galiana
Coordinated Regulation of Genes for Secretion in Tobacco at Late Developmental Stages: Association with Resistance against Oomycetes
Plant Physiology, February 1, 2004; 134(2): 858 - 870.
[Abstract] [Full Text] [PDF]

Home page
 Crop Sci.Home page
P. Revilla, R. A. Malvar, A. Butron, W. F. Tracy, B. G. Abedon, and A. Ordas
Response to Selection for the Timing of Vegetative Phase Transition in a Maize Population
Crop Sci., September 1, 2002; 42(5): 1471 - 1474.
[Abstract] [Full Text] [PDF]


Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.