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Publication Type J
Authors WU, L; LIN, H
Author Full Name WU, L; LIN, H
Title SALT TOLERANCE AND SALT UPTAKE IN DIPLOID AND POLYPLOID BUFFALOGRASSES (BUCHLOE DACTYLOIDES)
Source JOURNAL OF PLANT NUTRITION
Language English
Document Type Article
Keywords Plus SALINITY; CALCIUM; GROWTH; STRESS; BARLEY; INHERITANCE; NUTRITION; CA-2+; ROOTS; WHEAT
Abstract Seed samples of diploid, tetraploid, and hexaploid buffalograss (Buchloe dactyloides) were collected from locations over a geograptucal latitudinal gradient from San Luis Potosi, Mexico to Lincoln, Nebraska in the United States. Seed samples and samples of vegetatively propagated clones were tested for salt tolerance and salt uptake. Under nutrient solution culture, young shoots separated from the established buffalograss clones were found to be more tolerant to salt than the seedlings. Significant difference was found in the percentage of seedling survivorship among the populations. Substantial genetic variation of salt tolerance was detected among the vegetatively propagated clones within buffalograss populations. Over all, the buffalograss can he considered to be a moderately salt sensitive species. Its wealth of genetic variation of salt tolerance represents a potential for rapid salt tolerance selection response. A salt exclusion mechanism was found in the tolerance mechanism of the buffalograss. A greater sodium (Na) concentration was found in the root tissue than in the shoot tissue, suggesting a preferential exclusion of Na taken up by the shoots. The negative correlations between the plant tissue potassium (K) concentrations and Na/K ratios indicate a partial substitution of K by Na, and there was a less substitution of K by the more salt tolerant plants than the less tolerant plants. Differential susceptibility to calcium (Ca) disorders at high Na/Ca levels was detected between the salt tolerant and salt sensitive buffalograss genotypes.
Reprint Address WU, L (reprint author), UNIV CALIF DAVIS,DEPT ENVIRONM HORT,DAVIS,CA 95616, USA.
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Cited Reference Count 43
Times Cited 14
Total Times Cited Count (WoS, BCI, and CSCD) 16
Publisher MARCEL DEKKER INC
Publisher City NEW YORK
Publisher Address 270 MADISON AVE, NEW YORK, NY 10016
ISSN 0190-4167
29-Character Source Abbreviation J PLANT NUTR
ISO Source Abbreviation J. Plant Nutr.
Year Published 1994
Volume 17
Issue 11
Beginning Page 1905
Ending Page 1928
Digital Object Identifier (DOI) 10.1080/01904169409364854
Page Count 24
Web of Science Category Plant Sciences
Subject Category Plant Sciences
Document Delivery Number PJ185
Unique Article Identifier WOS:A1994PJ18500006
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