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Authors Reed, DC; Holbrook, SJ; Solomon, E; Anghera, M
Author Full Name Reed, DC; Holbrook, SJ; Solomon, E; Anghera, M
Title Studies on germination and root development in the surfgrass Phyllospadix torreyi: implications for habitat restoration
Source AQUATIC BOTANY
Language English
Document Type Article
Author Keywords germination; hormone; Phyllospadix torreyi; restoration; roots; seagrass
Keywords Plus SEAGRASS PHYLLOSPADIX; SEEDLING DEVELOPMENT; ZOSTERACEAE; MAINTENANCE; MORPHOLOGY
Abstract The surfgrass Phyllospadix torreyi occurs in rocky intertidal and shallow subtidal zones and local populations are often subject to anthropogenic disturbances that require restoration. The utilization of early life stages for restoration has been hampered by a lack of information about germination and growth of seedlings. Various methods for manipulating germination time and enhancing early root growth were tested in a series of laboratory culture experiments using seeds of P. torreyi collected from field populations. Germination rates were generally high (at least 70% after 4 weeks) with most seeds displaying a dormant period of at least 14 days. Cold, dark culture conditions were found to delay germination for periods up to 83 days, without affecting germination rate. Other experiments revealed that a single application of a low concentration of a commercially-available plant hormone resulted in a two-fold increase in the root mass/total mass ratio, an effect that was not enhanced by repeated application or by higher concentrations. These results have important implications for restoration of P. torreyi, because they indicate that early life stages can be readily stored, germinated and grown in laboratory culture, and they suggest that development of cost-effective restoration methods using early life stages may be feasible. (C) 1998 Elsevier Science B.V. All rights reserved.
Author Address Univ Calif Santa Barbara, Inst Marine Sci, Santa Barbara, CA 93106 USA; Univ Calif Santa Barbara, Dept Ecol Evolut & Marine Biol, Santa Barbara, CA 93106 USA
Reprint Address Reed, DC (corresponding author), Univ Calif Santa Barbara, Inst Marine Sci, Santa Barbara, CA 93106 USA.
Times Cited 17
Total Times Cited Count (WoS, BCI, and CSCD) 22
Publisher ELSEVIER SCIENCE BV
Publisher City AMSTERDAM
Publisher Address PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
ISSN 0304-3770
29-Character Source Abbreviation AQUAT BOT
ISO Source Abbreviation Aquat. Bot.
Publication Date OCT
Year Published 1998
Volume 62
Issue 2
Beginning Page 71
Ending Page 80
Digital Object Identifier (DOI) 10.1016/S0304-3770(98)00088-6
Page Count 10
Web of Science Category Plant Sciences; Marine & Freshwater Biology
Subject Category Plant Sciences; Marine & Freshwater Biology
Document Delivery Number 130HH
Unique Article Identifier WOS:000076513800001
Plants associated with this reference

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