Physical dormancy in seeds of the holoparasitic angiosperm Cuscuta australis (Convolvulaceae, Cuscuteae): dormancy-breaking requirements, anatomy of the water gap and sensitivity cycling.

TitlePhysical dormancy in seeds of the holoparasitic angiosperm Cuscuta australis (Convolvulaceae, Cuscuteae): dormancy-breaking requirements, anatomy of the water gap and sensitivity cycling.
Publication TypeJournal Article
Year of Publication2008
JournalAnnals of botany
Volume102
Issue1
Pagination39-48
ISSN0305-7364
Abstract

Dormancy in seeds of Cuscuta (Convolvulaceae, tribe Cuscuteae) is due to a water-impermeable seed coat (physical dormancy). In nondormant seeds of several species of this family, bulges adjacent to the micropyle have been identified as the initial route of water entry into seeds (water gap). However, there are claims that water enters seeds of Cuscuta spp. via the entire seed coat. Although several studies have been done on seed coat anatomy of Cuscuta, none has identified and/or characterized the morphology/anatomy of a water gap. Thus, the primary aim of this research was to identify and describe the morphology and anatomy of the water gap in seeds of Cuscuta australis. It was also determined if sensitivity cycling to dormancy-breaking treatments occurs in seeds of this species.

URLhttps://academic.oup.com/aob/article-lookup/doi/10.1093/aob/mcn064
DOI10.1093/aob/mcn064
Short TitleAnn Bot
X
Enter your linkblue username.
Enter your linkblue password.
Secure Login

This login is SSL protected

Loading