Am. J. Bot. Li-Cor Advertisement
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
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 Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via ISI Web of Science (15)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Dominguez, C. A.
Right arrow Articles by Marquez-Guzman, J.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Dominguez, C. A.
Right arrow Articles by Marquez-Guzman, J.
Agricola
Right arrow Articles by Dominguez, C. A.
Right arrow Articles by Marquez-Guzman, J.

American Journal of Botany, Vol 84, 626, Copyright © 1997 by Botanical Society of America, Inc.

REPRODUCTIVE BIOLOGY

Morph-biased male sterility in the tropical distylous shrub Erythroxylum havanense (Erythroxylaceae)

CA Dominguez, G Avila-Sakar, S Vazquez-Santana and J Marquez-Guzman

This study explores whether ecological factors, such as pollinators and pollen flow, or variation in pollen and ovule development account for the observed differences (approximately twofold) in the reproductive output of pin and thrum individuals of Erythroxylum havanense. The importance of ecological factors was assessed by means of comparison of the identity of pollinators and the rates of flower visitation, and by performing controlled hand pollinations and measurements of fruit set. In addition, we described the pollen and ovule development of thrum and pin individuals. Our results indicate that pollinators of E. havanense do not distinguish between floral morphs. The differences in fruit set between pin and thrum plants held even after hand pollination and, therefore, the observed differences in reproductive output between floral morphs of E. havanense cannot be explained in terms of asymmetrical pollen flow. There were no differences in the pattern of gynoecium development between the pin and thrum morphs, however androecium development showed marked differences between the morphs, and there was a resemblance between the developmental pathways leading to male sterility of the thrum morph of E. havanense with that of species with cytoplasmic male sterility (CMS).


This article has been cited by other articles:


Home page
 Am. J. Bot.Home page
L. F. Rosas, J. Perez-Alquicira, and C. A. Dominguez
Environmentally induced variation in fecundity compensation in the morph-biased male-sterile distylous shrub Erythroxylum havanense (Erythroxylaceae)
Am. J. Botany, January 1, 2005; 92(1): 116 - 122.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Bot.Home page
J. F. Ornelas, L. Jimenez, C. Gonzalez, and A. Hernandez
Reproductive ecology of distylous Palicourea Padifolia (Rubiaceae) in a tropical montane cloud forest. I. Hummingbirds' effectiveness as pollen vectors
Am. J. Botany, July 1, 2004; 91(7): 1052 - 1060.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Bot.Home page
J. F. Ornelas, C. Gonzalez, L. Jimenez, C. Lara, and A. J. Martinez
Reproductive ecology of distylous Palicourea padifolia (Rubiaceae) in a tropical montane cloud forest. II. Attracting and rewarding mutualistic and antagonistic visitors
Am. J. Botany, July 1, 2004; 91(7): 1061 - 1069.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Bot.Home page
L. M. Leege and L. M. Wolfe
Do floral herbivores respond to variation in flower characteristics in Gelsemium sempervirens (Loganiaceae), a distylous vine?
Am. J. Botany, August 1, 2002; 89(8): 1270 - 1274.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1997 by the Botanical Society of America, Inc.