Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

SALT TOLERANCE IN PARENTAL LINES OF RICE HYBRIDS THROUGH PHYSIOLOGICAL ATTRIBUTES AND MOLECULAR MARKERS (Pages : 1 - 7)

An experiment with 26 parental lines of hybrids was conducted in saline microplots at the Central Soil Salinity Research Institute, India during T. aman season of 2008 to identify salt tolerant ones for future development of salt tolerant hybrids. Salinity treatments (Control, 6 dS/m, 10 dS/m) were imposed from tillering stage to maturity. Results revealed that salinity increased Na+, decreased K+ and K+/Na+ ratio in flag leaves. Plant height, panicle length, 100-grain weight and biological yield decreased with increasing salinity. Number of tillers and panicles/plant and grain yield decreased similarly by the salinity of 6 and 10 dS/m. Number of dry leaves increased with the increase in salinity although total number of leaves were not affected by the salinity levels. IR60997-16-2-3-2-2R, IR29723, BR827-35, BCW-56, KMR-3, IR80155B and CSR23 performed better under salinity compared to other genotypes. The parental line BCW showed the lowest Na+ and the highest K+ and K+/Na+ ratio in flag leaves. The view of the DNA structures did not show significant variation in the genotypes.Download