Thumbnail
Access Restriction
Open

Researcher Shinde, Narayan Bapu
Advisor Desai, B. B.
Source KrishiKosh-Indian National Agricultural Research System
Content type Text
Educational Degree Master of Science (M.Sc.)
Publisher MPKV
File Format PDF
Language English
Subject Domain (in DDC) Technology ♦ Agriculture & related technologies
Subject Keyword Rice ♦ Agricultural Biochemistry
Abstract Six cultivars of rice (Oryza satlva L.) were exposed to increasing concentration of salt stress for eight days to study its effects on some biochemical and physiological parameters, viz.germination percentage, shoot and root growth, soluble proteins, free amino acids, proline, reducing, nonreducing and total sugars, ascorbic acid and activities of c£ -amylase and phosphatase. The content of soluble proteins, reducing and total sugars, ascorbic acid and the activi- , ties of •©G-amylase and phosphatase of six cultivars of rice decreased with increasing level of salinity. However, the decrease in the activity ofoC-amylase and phosphatase was higher in salt susceptible rice cvs.(RTN-1, RTN-24 and K-184) than in salt tolerant ones (PN-1, PN-2 and I.R.-8). Also the content of free amino acids of all the six rice cvs. decreased with increasing salinity, but in salt tolerant rice cvs. it was higher at 0.1M NaCl level. The proline content increased with increasing salinity upto 0.10M NaCl in salt susceptible rice cvs. and upto 0.15M NaCl in salt tolerant rice cvs. The differential potential of proline accumulation, content of free amino acids and activities of °C-amylase and phosphatase could be regarded as the biochemical markers to indicate levels of salt tolerance in rice cultivars. Based on the physiological and biochemical parameters studied, rice cvs. viz. PN-1, PN-2 and I.R.-8 could be classified as salt tolerant, whereas the other three rice cvs. viz. RTN-1, RTN-24 and K-184, appeared to be comparatively salt susceptible.
Educational Use Research
Education Level UG and PG
Learning Resource Type Thesis
Publisher Place Maharashtra
Size (in Bytes) 3.35 MB