PJB-2005-18
SALINITY EFFECTS ON SEEDLING GROWTH AND YIELD COMPONENTS OF DIFFERENT INBRED RICE LINES
AISHA SHEREEN, S. MUMTAZ, S. RAZA, M.A. KHAN AND S. SOLANGI
Abstract
Water culture studies of short (seedling stage) and long term (maturity) stage were conducted to evaluate the effect of different levels of salinity (0, 50, 75 mM NaCl) on the growth, yield and yield components of different inbred rice lines. Studies at seedling stage showed significant growth reduction in term of leaf mortality and shoot fresh weight in all tested lines under salinity. However, the rate of reduction varied among different lines. Variable responses to salinity have been observed at vegetative and reproductive stages. The lines which have shown tolerance at seedling stage exhibited greater reduction in their grain production. All yield contributing characters like fertility, tiller numbers, panicle number and panicle length were significantly reduced under salinity. Among these contributing characters sterility was found to be major cause of yield losses under saline conditions.
To Cite this article:
Download
