Cell size in Russet Burbank potato tubers with various levels of nitrogen and soil moisture tensions
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Russet Burbank potatoes were grown at levels of added nitrogen of 0, 135, and 270 kg/ha and soil moisture tensions (SMT) of 0.5 and 1.0 atm. With all combinations, there was a consistent gradient of larger to smaller starch-storage parenchyma cells from stem end to bud end of mature tubers.
Stem and bud ends of tubers grown at a SMT of 0.5 atm with N had smaller cortical and pith (innermost medullary or water-core) cells than did ends of tubers grown without N. Perimedullary tissues of bud ends of tubers receiving N likewise contained smaller cells than did corresponding tissues of tubers grown without N. No pronounced differences in cell size were found in tissues from the midsections.
In bud-end tissue of tubers grown at a SMT of 1.0 atm, there were no consistent differences in cell size with respect to N levels. However, pith, perimedullary, and cortical tissues of the midsections and stem ends of tubers receiving N had smaller cells than did corresponding tissues from tubers without N. The different patterns of cell size in tubers grown at different SMT indicate that the effects of N may be influenced by soil moisure.
KeywordsCell Size Potato Tuber AMERICAN Potato Journal Starch Granule Cortical Tissue
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- 2.Artschwager, E. 1924. Studies on the potato tuber. J. Agr. Res. 27: 809–835.Google Scholar
- 4.Morton, A. G. and D. J. Dawson. 1948. A physiological study of leaf growth. Ann. Botany, New Ser. 12: 281–310.Google Scholar
- 5.Reeve, R. M. 1967. Suggested improvements for microscopic measurement of cells and starch granules in fresh potatoes. Amer. Potato J. 44: 41–50.Google Scholar
- 6.Reeve, R. M., E. Hautala and M. L. Weaver. 1969. Anatomy and compositional variation within potatoes. I. Developmental histology of the tuber. Amer. Potato J. 46: 361–373.Google Scholar
- 7.Reeve, R. M., E. Hautala and M. L. Weaver. 1970. Anatomy and compositional variation within potatoes. III. Gross compositional gradients. Amer. Potato J. 47: 148–162.Google Scholar
- 8.Reeve, R. M. and C. H. H. Neufeld. 1959. Observations on the histology and texture of Elberta peaches from trees of high and low levels of nitrogen nutrition. Food Res. 24: 552–563.Google Scholar
- 9.Smith, O. 1968.In “Potatoes: Production, Storing, Processing.” Chap. 10, Mineral Nutrition of the Potato. Avi Publishing Company, Inc., Westport, Conn.Google Scholar