Gnanasiri S Premachandra

Research Agronomist

Department: Agronomy
Phone: 765.494.4258
Fax: 765.496.2926
Office: Lilly 3-459
E-mail: prema@purdue.edu
Personal Web Page

Area of Expertise: Research Agronomist

Education:

  • B.S. - Crop Science - Peradeniya University, Sri Lanka
  • M.S. - Plant Stress Physiology - Obihiro University, Japan
  • Ph.D. - Plant Physiology - Hiroshima University, Japan

Awards and Honors:      

  • Japanese Government Scholarship Award 1984.          
  • Japanese Government Pre-Doctoral Fellowship Award  1987.
  • Denmark Government Postdoctoral Research Fellowship Award  1995.
  • Award of Excellence for Outstanding Paper Published in 1996 Presented  by the Plant Growth Regulation Society of America.

Major Publications

Johnston, C.T. and Premachandra, G.S. (2001). Polarized ATR-FTIR study of smectite in aqueous   suspension. Langmuir 17: 3712-3718.

Wilcox, J.R., Premachandra, G.S., Young, K.A. and Raboy, V. (2000). Isolation of high seed inorganic P, low phytate soybean mutants. Crop Sci. 40: 1601-1605.

Saneoka, H., Shoita, H., Kurban, H., Chaudhary, M.I., Premachandra, G.S. and Fujita, K. (1999).

Effect of salinity on growth and solute accumulation in two wheat cultivars differing in salt tolerance.  Soil Sci. Plant Nutr. 45: 873-880.

Kurban, H., Saneoka, H., Nehira, K., Rahmutulla, A., Premachandra, G.S. and Fujita, K. (1999).

Effect of salinity on growth, photosynthesis and mineral composition in leguminous plant Alhagi  pseudoalhagi (Bieb.).  Soil Sci. Plant Nutr. 45: 851-862.

Ohashi, Y., Saneoka, H., Matsumoto, K., Ogata, S., Premachandra, G.S. and Fujita, K. (1999). 

Comparison of water stress effects on growth, leaf water status and nitrogen fixing activity in tropical  pasture legumes siratro and desmodium with soybean. Soil Sci. Plant Nutr. 45: 795-802.

Saneoka, H., Hiratsuka, K., Premachandra, G.S. and Fujita, K. (1998). Effect of temperature on cell membrane stability and solute content of leaves of orchardgrass. Grassland Sci. 43: 385-390.

Premachandra, G.S., Chaney, W.R. and Holt, H.A. (1997). Effects of mulch made from flurprimidol treated zinnia, silver maple, and white ash on growth of zinnia. J. Environ. Hort. 15(4):215-221.

Premachandra, G.S., Chaney, W.R. and Holt, H.A. (1996). Gas exchange and water relations of Fraxinus americana L. affected by flurprimidol. Tree Physiol. 17: 97-103.

Premachandra, G.S., Nagasaka, C., Chaney, W.R. and Holt, H.A. (1996). Response of cells, seeds, and plants to a range of flurprimidol concentrations varies in zinnia, sunflower, green pepper and tobacco. Plant Growth Regu. Soc. Am. Quart. 24:140-148.

Ashokan, P.K., Chaney, W.R. and Premachandra, G.S., (1995). Soil applied paclobutrazol affects leaf water relations and growth of American elm (Ulmus americana L.) seedlings. Plant Growth Regu, Soc. Am. Quart. 23:1-12.

Premachandra, G.S., Hahn, D.T., Rhodes, D. and Joly, R.J. (1995). Leaf water relations, gas exchange and solute accumulation in two sorghum lines exhibiting contrasting drought tolerance. J. Exp. Bot. 46:1833-1841.

Saneoka, H.,  Yang, W.J., Premachandra, G.S., Joly, R.J. and Rhodes, D. (1995). Salt tolerance of glycinebetaine-deficient and -containing maize lines. Plant Physiol. 107:631-638.

Yang, W.J.,  Rich, P.J., Wood, A.J., Saneoka, H., Premachandra, G.S., Joly, R.J. and Rhodes, D. (1995). Near-isogenic lines of maize differing for glycinebetaine. Plant Physiol. 107:621-630.

Premachandra, G.S., Hahn, D.T., Axtell, J.D. and Joly, R.J. (1994). Leaf water relations, gas exchange and water use efficiency in four bloomless mutants of Sorghum bicolor. Environ. and Exp. Bot. 34:293-301.

Premachandra, G.S., Hahn, D.T. and Joly, R.J. (1994). Leaf water relations and gas exchange in two grain sorghum genotypes differing in their pre- and post-flowering drought tolerance. J. Plant Physiol. 143:96-101.

Premachandra, G.S., Saneoka, H., Fujita, K. and Ogata, S. (1993). Seasonal changes in leaf water relations and cell membrane stability in orchardgrass. J. Agric. Sci., Camb. 121:169-175.

Premachandra, G.S., Hahn, D.T. and Joly, R.J. (1993). A simple method for determination of abaxial and adaxial epicuticular wax loads in intact leaves of Sorghum bicolor. Can. J. Plant Sci. 73:521-524.

Premachandra, G.S., Saneoka, H., Fujita, K. and Ogata, S.  (1993). Water stress and potassium fertilization in field grown maize: Effects on leaf water relations and leaf rolling. J. Agron. & Crop Sci. 170:195-201.

Premachandra, G.S., Saneoka, H., Fujita, K. and Ogata, S. (1992). Cell membrane stability, leaf water relations, osmotic adjustment, epicuticular wax load and growth as affected by increasing water deficits in sorghum. J. Exp. Bot. 43:1569-1576.

Premachandra, G.S., Saneoka, H., Fujita, K. and Ogata, S. (1992). Osmotic adjustment and stomatal response to water deficits in maize. J. Exp. Bot. 43:1451-1456.

Premachandra, G.S. and Joly, R.J. (1992). Solutes contributing to osmotic potential in young versus mature leaves of cocoa seedlings. J. Plant Physiol. 139:355-360.

Premachandra, G.S., Saneoka, H. and Ogata, S. (1991). Cell membrane stability and leaf water relations as affected by potassium nutrition of water-stressed maize. J. Exp. Bot. 42:739-745.

Premachandra, G.S., Saneoka, H. and Ogata, S. (1991). Cell membrane stability and leaf surface wax content as affected by increasing water deficits in maize. J. Exp. Bot. 42:167-171.

Premachandra, G.S., Saneoka, H. and Ogata, S. (1990). Cell membrane stability and leaf water relations as affected by phosphorus nutrition under water stress in maize. Soil Sci. Plant Nutr. 36:661-666.

Premachandra, G.S., Saneoka, H. and Ogata, S. (1990). Cell membrane stability and leaf water relations as affected by nitrogen nutrition under water stress in maize. Soil Sci. Plant Nutr. 36:653-659.

Premachandra, G.S., Saneoka, H. and Ogata, S. (1990). Cell membrane stability, an indicator of drought tolerance, as affected by applied nitrogen in soyabean. J. Agric. Sci., Camb. 115:63-66.

Premachandra, G.S., Saneoka, H., Matsuura, H. and Ogata, S. (1990). Cell membrane stability and leaf water relations as affected by nitrogen application in maize. Japan J. Crop Sci. 59:354-358.

Premachandra, G.S., Saneoka, H. and Ogata, S. (1990). Evaluation of polyethylene glycol test for measuring cell membrane stability in maize. J. Agronomy & Crop Sci. 164:131-136.

Premachandra, G.S., Saneoka, H., Kanaya, M. and Ogata, S. (1989). Responses of relative growth rate, water relations and solute accumulation in maize to increasing water deficits. J. Plant Physiol. 135:257-260.

Saneoka, H., Premachandra, G.S., Kanaya, M. and Ogata, S. (1989). Cultivar differences in drought tolerance in maize.  J. Japan Grassl. Sci. 35:234-240.

Premachandra, G.S., Saneoka, H. and Ogata, S. (1989). Evaluation of polyethylene glycol test for measurement of cell membrane stability in maize. Soil Sci. Plant Nutr. 35:565-573.

Premachandra, G.S., Saneoka, H. and Ogata, S. (1989). Polyethylene glycol test for evaluation of cell membrane stability in maize. Japan J. Crop Sci. 58:419-423.

Premachandra, G.S., Saneoka, H. and Ogata, S. (1989). Nutrio-physiological evaluation of polyethylene glycol test of cell membrane stability in maize. Crop Sci. 29:1287-1292.

Premachandra, G.S. and Shimada, T. (1988). Variability and heritability of excised leaf water retention capability in orchardgrass. Can. J. Plant Sci. 68:805-807.

Premachandra, G.S. and Shimada, T. (1988). Evaluation of polyethylene glycol test of measuring cell membrane stability as a drought tolerance test in wheat. J. Agric. Sci., Camb. 110:429-433.

Premachandra, G.S. and Shimada, T. (1988). Genetical variability of excised leaf water retention capability in wheat. Japan J. Crop Sci. 57:220-224.

Premachandra, G.S. and Shimada, T. (1987). Measurement of drought tolerance in orchardgrass II. Evaluation of polyethylene glycol test. J. Japan Grassl. Sci. 33:149-158.

Premachandra, G.S. and Shimada, T. (1987). Measurement of drought tolerance in orchardgrass I. Polyethylene glycol test of measuring cell membrane stability. J. Japan Grassl. Sci. 33:140-148.

Premachandra, G.S. and Shimada, T. (1987). The measurement of cell membrane stability using polyethylene glycol as a drought tolerance test in wheat. Japan J. Crop Sci. 56:92-98.

Premachandra, G.S. and Shimada, T. (1987).Effectiveness of polyethylene glycol test for measuring drought tolerance in orchardgrass and wheat. Hokkaido J. Grassl. Sci., Japan. 20:208-211.

Premachandra, G.S., De Silva, K.P.U. and Premathilaka, A. (1983). Effect of nitrogen fertilizer and methods of control of vine growth on tuber yield of sweet potato. Sri Lankan J. Agric. Sci.20:97-103.

Date joined Purdue: April 1990