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Authors POLJAKOFFMAYBER, A; SOMERS, GF; WERKER, E; GALLAGHER, JL
Author Full Name POLJAKOFFMAYBER, A; SOMERS, GF; WERKER, E; GALLAGHER, JL
Title SEEDS OF KOSTELETZKYA-VIRGINICA (MALVACEAE) - THEIR STRUCTURE, GERMINATION, AND SALT TOLERANCE .2. GERMINATION AND SALT TOLERANCE
Source AMERICAN JOURNAL OF BOTANY
Language English
Document Type Article
Keywords Plus PHOSPHOENOLPYRUVATE CARBOXYLASE; PROLINE ACCUMULATION; COMPATIBLE SOLUTES; SALINITY; BETAINE; PLANTS; BARLEY; GROWTH; STRESS
Abstract Kosteletzkya virginica (L.) Presl. (Malvaceae) is a perennial that grows in saline or brackish water, and is salt-tolerant in its mature state, but less tolerant during germination. The seeds show a very low permeability to water that increases during storage. The permeability to water differs in seeds harvested in different years. Optimal temperature for germination is 28-30 C. The effect of salinity on imbibition is largely osmotic, but germination is inhibited, apparently, by the combined osmotic and ''ionic'' effects, especially at high NaCl concentrations. Inhibition of germination by high NaCl concentrations is relatively more severe in scarified than in intact seeds, indicating that the seed coat acts as a partial barrier to Na+ influx. External application of proline or betaine did not improve germination under saline conditions. Dry seeds contain a significant amount of betaine and low levels of proline, but during germination and in the presence of NaCl the betaine content decreased while the proline content increased. Thus, the likely compatible solute in the germinating seed seems to be proline.
Author Address UNIV DELAWARE,COLL MARINE STUDIES,HALOPHYTE BIOL LAB,LEWES,DE 19958; HEBREW UNIV JERUSALEM,DEPT BOT,IL-91904 JERUSALEM,ISRAEL; UNIV DELAWARE,NEWARK,DE 19716
Times Cited 97
Total Times Cited Count (WoS, BCI, and CSCD) 102
Publisher BOTANICAL SOC AMER INC
Publisher City COLUMBUS
Publisher Address OHIO STATE UNIV-DEPT BOTANY 1735 NEIL AVE, COLUMBUS, OH 43210
ISSN 0002-9122
29-Character Source Abbreviation AM J BOT
ISO Source Abbreviation Am. J. Bot.
Publication Date JAN
Year Published 1994
Volume 81
Issue 1
Beginning Page 54
Ending Page 59
Digital Object Identifier (DOI) 10.2307/2445562
Page Count 6
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number MU541
Unique Article Identifier WOS:A1994MU54100008
Plants associated with this reference

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