Browsing by Subject "Salts in"
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Item Effects of benefin on lettuce grown at varying levels of Nob3s, C1 and SOb4s(Texas Tech University, 1973-08) Christie, Charles JNot availableItem Salinity Effects on Growth and Fine Structure of Atriplex Halimus 1(Texas Tech University, 1974-05) Kelley, David BryanAtriplex 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.Item Salinity effects on growth, PEP carboxylase, and photosynthesis in three ploidy levels of Atriplex canescens (Pursh) Nutt.(Texas Tech University, 1983-05) Hamilton, Gary JohnNot available