Salinity Effects on Growth and Fine Structure of Atriplex Halimus 1
| dc.creator | Kelley, David Bryan | |
| dc.date.accessioned | 2016-11-14T23:09:41Z | |
| dc.date.available | 2011-02-18T23:51:35Z | |
| dc.date.available | 2016-11-14T23:09:41Z | |
| dc.date.issued | 1974-05 | |
| dc.description.abstract | Atriplex halimus L. plants were grown in nutrient culture solutions of full-strength Hoagland's, and fullstrength Hoagland's supplemented with either 0.174 M NaCl or 0.345 M NaCl. Observations were made on growth habit, net growth, and leaf cell ultrastructure of plants from the various treatments. Plants grown under control conditions (full-strength Hoagland's with no supplemental salt) had an erect habit with no lateral branching, but had a reduced net growth in comparison to plants in either of the salt treatments. Plants in the 0.174 M NaCl treatment were relatively erect (some recumbency was noted) and exhibited much better growth than either the control treatment or the high-salt (0.345 M NaCl) treatment. This is an indication of the plant's need for sodium chloride in the medium as either a nutrient or an osmoticum, and leads to the classification of A. halimus as a halophyte. Plants grown in the high-salt treatment showed a marked recumbency and a reduction in growth, but nevertheless showed a better net growth than plants in the control treatment. The fine structure of the leaf cells is correlated to salinity treatments. Plants grown in high-salt treatments showed swelling of organelles (chloroplasts and mitochondria) and other structural differences. The hair cells, which showed little ultrastructural response to high-salinity treatments, were characterized by unique ultrastructural features directly related to salinity tolerance. | |
| dc.format.mimetype | application/pdf | |
| dc.identifier.uri | http://hdl.handle.net/2346/20673 | en_US |
| dc.language.iso | eng | |
| dc.publisher | Texas Tech University | en_US |
| dc.rights.availability | Unrestricted. | |
| dc.subject | Plants -- Effect of salt on | en_US |
| dc.subject | Salts in | en_US |
| dc.subject | Soils | en_US |
| dc.subject | Halophytes | en_US |
| dc.subject | Atriplex | en_US |
| dc.title | Salinity Effects on Growth and Fine Structure of Atriplex Halimus 1 | |
| dc.type | Thesis |