Vol. 7, Issue 4 (2019)
Salinity tolerance screening in local rice varieties of Tamil Nadu and Kerala
Author(s): Kalaiyarasi R, V Kuralarasan, Jeena George, NM Praveen and V Manikandan
Abstract: The response of sixteen rice varieties including local varieties collected from Tamilnadu and Kerala state along with two check varieties was studied at germination and early seedling growth stage subjected to five salinity levels at 0mM, 50mM, 100mM, 150mM, 200mM of NaCl. The pre-test was conducted by Agar Plate Method at salinity levels at 0, 50,100,150mM of NaCl. The selected varieties were tested for salinity tolerance by using Roll Towel Method at different concentration 0mM, 50mM, 100mM, 150mM, 200mM of NaCl. Data were analyzed statistically for final germination percentage (FGP), speed of germination (SG), germination energy percentage (GE %), plumule length, radicle length, root length and shoot length. Lower values of FGP, SG, GE % led to reduction in the shoot and root length in all varieties and the magnitude of reduction increased with increasing salinity stress. Germination was completely arrested in one variety at increased salt concentration of 200mM. Rice varieties ADT45, ADT 39, GP 16, Deepthi and Thaichunga Matta showed greater salt tolerance during germination at 200mM salinity than the values of check varieties Pokkali and Co 43. The results suggested that ADT 45, ADT 39, GP 16, Deepthi and Thaichunga Matta might be used for further study of salinity effect on growth processes and its physiological consequences at an advanced stage of growth.
Pages: 1667-1671 | 514 Views 235 Downloads
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How to cite this article:
Kalaiyarasi R, V Kuralarasan, Jeena George, NM Praveen, V Manikandan. Salinity tolerance screening in local rice varieties of Tamil Nadu and Kerala. Int J Chem Stud 2019;7(4):1667-1671.
