Sodium accumulation in Atriplex. Final report
This study was undertaken to determine the ecological significance and the significance to arid land reclamation of sodium accumulation and nonaccumulation in Atriplex. There was a continuum in the genetic tendency of Atriplex canescens to accumulate sodium, from populations which accumulated almost no sodium to populations which accumulated up to 7% in the leaves. There were also substantial differences in sodium uptake between populations of A. tridentata, A. falcata and A. gardneri, with some populations having less than 0.1% leaf sodium and other populations having up to 5 or 6%. In three experiments (a field study, a greenhouse pot study and a hydroponics study) there were no significant differences in salinity tolerance between sodium accumulating and nonaccumulating A. canescens: both genotypes were highly salt tolerant. There was a significant buildup of sodium in the soil beneath sodium accumulating Atriplex plants, both in natural populations and on revegetated oil shale study plots. The sodium buildup was not sufficient to be detrimental to the growth or establishment of most herbaceous species, but with older Atriplex plants or with more saline soil, the buildup could potentially be detrimental. 14 references, 42 figures, 3 tables.
- Research Organization:
- Utah State Univ., Logan (USA)
- DOE Contract Number:
- AC02-81EV10729
- OSTI ID:
- 6547629
- Report Number(s):
- DOE/EV/10729-1; ON: DE84017282
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
59 BASIC BIOLOGICAL SCIENCES
04 OIL SHALES AND TAR SANDS
HERBS
TOLERANCE
SODIUM
BIOLOGICAL ACCUMULATION
ARID LANDS
CATIONS
EXPERIMENTAL DATA
LAND RECLAMATION
POPULATIONS
SALINITY
SOILS
SPECIES DIVERSITY
SPENT SHALES
VARIATIONS
ALKALI METALS
CHARGED PARTICLES
DATA
ELEMENTS
INFORMATION
IONS
METALS
NUMERICAL DATA
PLANTS
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)
551000 - Physiological Systems
041000 - Oil Shales & Tar Sands- Environmental Aspects