Journal of Applied and Natural Science 6 (2): 578-588 (2014)
Salinity induced physiological and biochemical changes in chickpea
(Cicer arietinum L.) genotypes..
Pavneetpal Kaur, Jagmeet Kaur1*, Satvir Kaur2, Sarvjeet Singh1 and Inderjit Singh1
Department of Botany, Punjab Agricultural University, Ludhiana, INDIA
1Department of Plant Breeding and Genetics*, Punjab Agricultural University, Ludhiana, INDIA
2Department of Biochemistry, Punjab Agricultural University, Ludhiana, INDIA
*Corresponding author. E-mail : email@example.com
Abstract : Plant growth and development are adversely affected by
salinity- a major environmental stress that limits agricultural production.
Chickpea (Cicer arietinum L.) is sensitive to salinity that affects its
yield and there is need to identify the tolerant genotypes. The present study
was conducted to evaluate the effect of salinity on chickpea genotypes with
specific physiological and biochemical attributes contributing to their
adaptability to salinity stress. Seven chickpea genotypes both desi (ICC8950,
ICCV10, ICC15868, GL26054) and kabuli (BG1053, L550, L552) were
evaluated for salinity tolerance. Maximum decrease in relative leaf water
content and chlorophyll content was observed with ICC15868 and GL26054 among the
desi and L552 from the kabuli genotypes. The photosynthetic pigments,
activity of nitrate reductase and relative leaf water content was also reduced
in response to salt application with effect being more pronounced in ICC15868,
GL26054 and L552 as compared to ICC8950, ICCV10, BG1053 and L550. Lipid
peroxidation increases with the increase in NaCl concentration, maximum
increment was observed in genotypes ICC15868, GL26054 and L552. Accumulation of
proline in response to environmental stresses seems to be widespread among
plants. Higher protein fractions were observed with tolerant genotypes in
contrast to sensitive genotypes. Salt imposed stress finally caused a higher
decline in number of filled pods. On the basis of physiological and biochemical
parameters genotypes ICC8950 and ICCV10 from the desi genotypes and BG1053 and
L550 from kabuli were identified as the tolerant while ICC15868,
GL26054 as the sensitive ones and L552 as the moderately tolerant genotypes.
These genotypes could be used as a source of tolerance in breeding programme to
develop salt tolerant genotypes.
Keywords : Biochemical, Chickpea, Physiological, Salinity.