Abstract:
Seed germination and early seedling growth of different species in saline
condition is familiar to all. But effect of salinity on seed germination and early
seedling growth of Acacia auriculiformis is not well known to all. So, a pot
experiment was conducted at the Agroforestry research field, Sher-e-Bangla
Agricultural University, Dhaka-1207 during the period from 02 July, 2020 to 15
February, 2021 to find out the effects of salinity on seed germination and early
seedling growth of Acacia auriculiformis. The experiment consisted of single
factor as salinity. There are eight treatments namely were as follows: S₀ = 0 mM,
S₁ = 25 mM, S₂ = 50 mM, S₃ = 75 mM, S₄ = 100 mM, S₅ = 150 mM, S₆ = 200
mM and S₇ = 250 Mm NaCl concentration. This experiment was laid out in
CRD(completely randomized design) with four replications. Germination (%),
plant height, branch length, number of branches plant⁻¹ at different data
recording intervals gradually decreased with increasing salinity level. The
highest value for the growth attributes mentioned above were obtained from
control treatment while the lowest values were seen in 200–250 mM
concentration of salinity. Leaf length was not affected significantly but the
variation among the leaf width value were significantly influenced due to
different concentration of salinity with the highest values were recorded from 0–
150 mM salinity and the lowest values were recorded around 250 mM
concentration. Shoot fresh weight, shoot dry weight, root fresh weight and root
dry weight all were varied significantly due to the effect of different level of
saline condition.
Description:
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfilment of the requirements
for the degree of
MASTER OF SCIENCE (M.S.)
IN
AGROFORESTRY AND ENVIRONMENTAL SCIENCE