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


     

This Article
Right arrow Full Text
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 ISI Web of Science (1)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Morinaga, S.-I.
Right arrow Articles by Sakai, S.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Morinaga, S.-I.
Right arrow Articles by Sakai, S.
Agricola
Right arrow Articles by Morinaga, S.-I.
Right arrow Articles by Sakai, S.
(American Journal of Botany. 2003;90:1153-1158.)
© 2003 Botanical Society of America, Inc.

Reproductive Biology

Consequences of differences in flowering date on seed production in Heloniopsis orientalis (Liliaceae)1

Shin-Ichi Morinaga2,4, Kazuki Tsuji3 and Satoki Sakai2

2Department of Ecology and Evolutionary Biology, Graduate School of Life Science, Tohoku University, Aoba, Sendai 980-8578, Japan; 3Faculty of Agriculture, University of the Ryukyus, Okinawa 903-0213, Japan

We examined the consequences of differences in flowering date on seed production in the self-compatible herb Heloniopsis orientalis. The number of selfed seeds per fruit, as determined by microsatellite markers, did not depend on when the plant flowered, whereas the number of outcrossed seeds per fruit increased with later flowering dates. Consequently, the selfing rate decreased with later flowering dates. The number of seeds (including both selfed and outcrossed ones) per fruit and the seed : ovule ratio increased with later flowering dates. We also examined the effects of pollinators and plant size on seed production. The visitation rate of Diptera did not depend on the flowering season, whereas that of Hymenoptera markedly increased as the flowering season progressed. Diptera stayed longer than Hymenoptera on each plant and flower. Seed production per fruit did not depend on plant size. Thus, the change in selfing rate associated with later flowering dates resulted from the seasonal change in pollinators rather than plant size.

Key Words: flowering date • Heloniopsis orientalis • Japan • Liliaceae • plant size • pollinator • seed production • selfing rate






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2003 by the Botanical Society of America, Inc.