Salinity stress severely affects the growth, physiological and developmental processes in plant
species. Melia dubia is an ecologically and economically important tree species of the Indian subcontinent.
However, systematic information with respect to the species salt tolerance potential is completely lacking.
Under salt stress conditions, determining suitable soil EC range is required for the better survival, growth
and productivity of the tree species. In present study, we investigated the effects of different soil salinity
(EC 4, 8, and 12) levels on the ion homeostasis, physio-biochemistry, morphology, and growth of M. dubia
plant. Results revealed that increase in soil salinity causes higher Na+ content and Na+/K+ ratio, while
lower K+ content, in the leaf tissues of M. dubia. The physiological processes such as the photosynthetic
rate, stomatal conductance, internal CO2 concentration, and transpiration rate were adversely affected
with the increased salt stress levels. Morphological parameters, such as internodal length, petiole length,
leaf length, and leaf width also decreased (P<0.05) under saline stress conditions. Results further indicat-
ed that salinity levels significantly (P<0.05) affected the M. dubia growth, and the growth rate was found
optimum upto 8 EC, thereafter it slightly decreased with the increased salt stress to 12 EC. Our findings
showed that increased salinity stress causes significant changes in the physiological, morphological, and
growth pattern of M. dubia. Therefore, based on present experiment, we found M. dubia suitable for the
salt affected soils of EC 8 with optimum growth rate and at EC 12 with the moderate (20–25%) growth
reduction.
Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies
Informacja
SZANOWNI CZYTELNICY!
UPRZEJMIE INFORMUJEMY, ŻE BIBLIOTEKA FUNKCJONUJE W NASTĘPUJĄCYCH GODZINACH:
Wypożyczalnia i Czytelnia Główna: poniedziałek – piątek od 9.00 do 19.00