Effects of sea water on germination, growth, accumulation of organic compounds and inorganic ions in halophytic grass heleochloa setulosa (Trin) blatt et McCann.
2002
Joshi, A.J. | Kumar, A.S. | Hinglajia, H. (Bhavnagar University, Bhavnagar (India). Department of Life Sciences)
Eleven per cent seeds of Heleochloa setulosa germinated in 8 dS m-1 sea water and the process was totally impaired in 16 dS m-1 and higher salinity. Shoot and root length as well as fresh and dry weight of the 60 day old plants of H. setulosa decreased plants grown in 10 to 40 dS m-1 sea water salinity as compared to control. Protein content varying between 1178 to 147 mg g-1 dry wt in shoots and roots was adversely affected beyond 20 dS m-1 salinity. Asparagine, aspartic acid, glycine, phenylalanine and proline increase in salt treated plants. Concentrations of total, reducing and major sugar in young plants decrease with increase in sea water salinity in growth medium. Accumulatio of Na+ and Cl- in salt treated plats were greater than salt free plants, whereas Ca+2, Mg+2, and K+ content did not show specific trend in relation to increased salinity.
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