Abstract:
An experiment on tomato was conducted at the Net House Premises of Soil Science
Division, Bangladesh Agricultural Research Institute; Gazipur during the winter
season from Nov.2013 - Feb. 2014. The major objective of the study was to assess the
salinity tolerance ability of promising tomato genotypes for the identification of salt
tolerant ones. Six levels
-1
2
3
1
3
gave the highest fruit yield
equivalent to
55.25 t ha
-1
2
concentration was highest for the V
as 14.56, 3.09, 0.25 and 199.75
mol m
-2
s
-1
, respectively. Potassium: sodium ratio for V
3
1
, V
2
and V
was 3.43, 3.55 and
3.72, respectively, which indicates their adaptability under salt stressed situation to a
considerable extent, where the performance of V
3
3
was slightly better over other two
varieties. Increasing levels of salinity resulted in lower SPAD values in leaves
regardless of genotype. Photosynthetic rate, transpiration rate, intercellular CO
concentration showed significant negative linear relationships with electrical
conductivity of the irrigation water. Sodium salt stress showed antagonistic effect on
the absorption N, P, K, Mg and S while it was synergistic for Ca although root Ca
concentration showed declining trend. Considering all studied traits and yield
potentiality, BARI hybrid tomato 8 can be regarded as salt tolerant to some extent.
-1
2
Description:
A Thesis
Submitted to the Department of Horticulture,
Sher-e-Bangla Agricultural University, Dhaka
In partial fulfillment of the requirements
for the degree
of
MASTER OF SCIENCE
HORTICULTURE
SEMESTER: JULY - DECEMBER, 2014
