PJB-2002-39
HEAT ACCLIMATION POTENTIAL OF CHLOROPHYLL FLUORESCENCE OF COTTON CULTIVARS
MUMTAZ ALI SETHAR, VAJANTI MALA PAHOJA AND QAMARUDDIN CHACHAR
Abstract
Cotton cultivars Qalandri and MNH-93 were analysed for their heat acclimation potential. The 8-12 days old leaves were given repeated hardening treatments at 42°C for 2h for upto 7 days and after every treatment the leaves were heat stressed at 44°C for 2h. The heat acclimation potential was analysed after 24h recovery period at 30°C. The results showed that cv. MNH-93 has fairly good acclimation potential than cv. Qalandri by recovering 63% Fv/Fm ratio as compared 50% in cv. Qalandri indicating that adaptive changes in PS-II were more effective in cv. MNH-93 than cv. Qalandri.
To Cite this article:
Download
