Eleventh Biennial Research Report (2022-2023)http://archive.saulibrary.edu.bd/handle/123456789/56012026-10-01T23:40:17Z2026-10-01T23:40:17ZSELECTION OF HIGHER YIELDING YELLOW SEEDED POPULATIONS OF Brassics rapa FROM BACKCROSS- 2F 32 4 (BC 2 F ) POPULATIONS FOR TWO OR THREE-CROPPED CROPPING PATTERNSBhuiyan, Md. Shahidur Rashidhttp://archive.saulibrary.edu.bd/handle/123456789/56402026-09-30T07:05:03Z2026-06-01T00:00:00ZSELECTION OF HIGHER YIELDING YELLOW SEEDED POPULATIONS OF Brassics rapa FROM BACKCROSS- 2F 32 4 (BC 2 F ) POPULATIONS FOR TWO OR THREE-CROPPED CROPPING PATTERNS
Bhuiyan, Md. Shahidur Rashid
Executive Summary
An experiment was carried out with 46 populations (38 F
4
4
and 8 BC
population) of
Brassica rapa L. at the experimental field of Sher-e-Bangla Agricultural University, Dhaka
during November 2022 to February 2023 considering eleven yield contributing characters.
To study 46 populations, the magnitude of variations in the characters, correlation,
heritability, genetic advance, direct and indirect effect of different characters on seed yield
per plant were taken under analysis. Analysis of variance revealed significant variations
among all populations for all the traits. Minimum difference between phenoypic and
genotypic variance was observed in days to first flowering, days to 80% maturity, number of
primary branches per plant, length of siliquae and thousand seed weight indicating the less
environmental effect to control these characters. However, high genotypic and phenotypic
coefficient of variation was observed for the characters number of secondary branches per
plant, number of siliquae per plant, number of seeds per siliquae and seed flowering, days to
50% flowering, days to 80% maturity, plant height, number of secondary branches per plant,
number of siliquae per plant, number of seeds per siliqua, length of siliquae and thousand
seed weight whereas high heritability with high genetic advance was observed in number of
siliquae per plant. Correlation study revealed that seed yield per plant had a significant
positive correlation with days to maturity, plant height, number of primary branches per
plant, number of secondary branches per plant, number of siliquae per plant and length of
siliquae at the genotypic and phenotypic level. Direct positive effect on seed yield per plant
was found in days to 50% flowering, days to 80% maturity, number of primary branches per
plant, number of secondary branches per plant, number of siliquae per plant, length of
siliquae and number of seeds per siliquae through path coefficient analysis. Among 46
populations, 10 populations containing 7 F
4
2
populations such as G4, G16, G26, G27, G28,
G37 and G38 and 3 BC
2
F
populations such as G40, G45 and G46 were selected based on
the variability, short duration and high yield.
4
2026-06-01T00:00:00ZSELECTION OF HIGHER YIELDING YELLOW SEEDED POPULATIONS OF Brassics Rapa FROM BACKCROSS -2F 3 (BC 2 F ) POPULATIONS FOR TWO OR THREE- CROPPED CROPPING PATTERNSBhuiyan, Md. Shahidur Rashidhttp://archive.saulibrary.edu.bd/handle/123456789/56392026-09-30T07:00:31Z2026-06-01T00:00:00ZSELECTION OF HIGHER YIELDING YELLOW SEEDED POPULATIONS OF Brassics Rapa FROM BACKCROSS -2F 3 (BC 2 F ) POPULATIONS FOR TWO OR THREE- CROPPED CROPPING PATTERNS
Bhuiyan, Md. Shahidur Rashid
Executive Summary
A research was conducted in the departmental farm of Sher-e-Bangla Agricultural
University, by using twenty BC
2
F
generation of Brassica rapa obtained through advancing
gereration of different inter-varietal crosses and grown in Randomized Complete Block
Design with three replications at the experimental fields of Sher-e-Bangla Agricultural
University (SAU), Dhaka during December 2021 to February 2022. The purpose of the
experiment is to study the variability, heritability, genetic advance, correlation and direct and
indirect effect of different characters on seed yield. The characters visualized significant
variations among the genotypes. Phenotypic variance was higher than the genotypic variance
for every character. Minimum difference between phenotypic and genotypic variance was
seen in number of secondary branches per plant, siliqua length, days to 50% flowering, days
to 80% maturity, thousand seed weight and seed yield per plant. Moderate heritability with
low genetic advance and high genetic advance in percentage of mean was found in number
of secondary branches per plant while high heritability with moderately high genetic
advance in percentage of mean was observed in number of primary branches per plant,
number of seeds per siliqua, siliqua length. Significant positive association with seed yield
per plant was observed in plant height, number of siliqua per plant and seeds per siliqua. On
the other hand significant negative correlation was found in number of secondary branches
per plant. Path coefficient analysis revealed that all the characters had positive direct effect
on seed yield per plant except number of secondary branches per plnat, siliqua length and
seeds per siliqua. From this comparative study two BC
3
populations G20 and G17 were
selected based on their better performance in respect of number of siliqua per plant, siliqua
length, thousand seed weight and seed yield per plant to proceed for further evalutation.
2026-06-01T00:00:00ZIDENTIFICATION OF MUNGBEAN GENOTYPES AGAINSTWATERLOGGING STRESS AT VEGETATIVE GROWTH STAGEJahan, Mst. Afrosehttp://archive.saulibrary.edu.bd/handle/123456789/56382026-09-30T06:37:07Z2026-06-01T00:00:00ZIDENTIFICATION OF MUNGBEAN GENOTYPES AGAINSTWATERLOGGING STRESS AT VEGETATIVE GROWTH STAGE
Jahan, Mst. Afrose
Executive Summary
The experiment was conducted in the Research Field of Sher-e-Bangla Agricultural
University (SAU), Dhaka-1207 during the period of 1
30
st
week of March, 2022 to June 29,
2022 to evaluate the growth and yield performance of selected mungbean genotypes at
variable irrigation management conditions. Thirty mungbean genotypes were evaluated
under waterlogging and normal condition. Waterlogging was imposed at 30 days after
sowing by transferring the pots in a water tub where water was maintained about 5 cm above
the soil surface of pots. After four days (96 h), pots were removed from waterlogging and
kept in normal condition until maturity. Waterlogging significantly affected growth and
yield of mungbean genotypes. Waterlogging caused a drastic yield reduction in mungbean.
The seed yield reduction was about 60% due to waterlogging as compare to control
condition, however, genotypes showed variable response to waterlogging. Under waterlog
condition the higher relative yield was found in G11, G8, G30, G7, G16 and G14 while that
was lower in G2 and G17. Dry matter production also reduced by waterlogging. However,
under waterlogging, G8, G7, G22, G2, G19 and G11 showed better dry matter production
compared to other genotypes. Stress tolerance index (STI), yield index (YI) and relative
yield (RY) of G16, G20, G7, G8, G11, G30 and G14 were higher than others. On the basis
of yield, dry matter production, STI, YI and RY, genotypes G7, G8, G11, G12, G14, G16,
G20, G22 and G30 could be selected as relatively tolerant genotypes against waterlogging
stress.
2026-06-01T00:00:00ZEVALUATING THE LEVELS OF HEAVY METALS IN SOILS AND CROPS GROWN IN INDUSTRIALLY POLLUTED SELECTED AREAS OF BANGLADESHKhan, Md. Asaduzzamanhttp://archive.saulibrary.edu.bd/handle/123456789/56372026-09-30T06:33:51Z2026-06-01T00:00:00ZEVALUATING THE LEVELS OF HEAVY METALS IN SOILS AND CROPS GROWN IN INDUSTRIALLY POLLUTED SELECTED AREAS OF BANGLADESH
Khan, Md. Asaduzzaman
Executive Summary
This study was performed through a net house experiments at Soil Science Department,
SAU Dhaka. Tomato and okra were grown in the net house during 2021-22 in five
industrially polluted and one non-polluted soils. The soils were collected from Bhaluka
industrial areas where industrial waste water deposited continuously.The experiment was
conducted by using 54 pots (6 Soils: S
0
-Non-polluted soil, S
1
-polluted soil 1, S
-polluted soil
2, S
3
-polluted soil 3, S
4
- polluted soil 4, S
5
2
: polluted soil 5; × 3 fertilizer treatments: T
:
Control T
1
: 100% recommended dose of fertilizer T
: 50% recommended dose of fertilizer
plus 50% nutrient from manure × 3 replications). The tomato and okra yields and yield
parameters were significantly affected by industrially polluted soils and fertilizer treatments.
Among the soils, the highest tomato yield (330.8 g pot
2
-1
) and okra yield (98.55 g pot
) were
found in S
1
and S
5
soils lowest tomato and okra yields were found in S
soils,
respectively. The yield increased in polluted soils may be due to increase of plant nutrient
dposition through industrial waste water but toxic metals accumulation were higher in
polluted soils. The highest tomato yield (322.0 g pot
-1
) was recorded in T
treatment and
lowest in T
treatment. The highest level of tomato (0.585%) and okra (0.343%) fruit dry
matter P concentrations were recorded in S
0
4
T
0
and S
0
T
treatment combinations. The highest
level of tomato (3.963%) and okra (2.130%) fruit dry matter K concentrations were recorded
in S
2
T
1
and S
3
T
2
2
treatment combinations, respectively. The higher levels of Fe and Pb
accumulated in tomato fruits from industrially polluted soils. The highest tomato fruit dry
matter Pb (1.359 mg kg
-1
) and Cd (0.759 mg kg
-1
) concentrations were found in T
treatment
and lower levels were obtained in T
1
and T
treatments. In maximum cases, lower levels of
Pb and Cd concentrations in tomato were recorded in different soils with 50 %
recommended dose of chemical fertilizer plus 50% nutrient from manure (T
2
). Similarly
higher okra dry matter Pb (0.625 mg kg
-1
) was obtained in fertilizer control treatment
compared to fertilizer applied treatments. The higher levels of tomato and okra fruit Cu, Pb
and Cd concentrations were recorded in polluted soils with different fertilizer treatments.
The highest tomato fruit Pb concentration (1.656 mg kg
-1
) was obtained in S
and lowest
(0.501 mg kg
-1
) in S
3
T
treatment combinations. The highest tomato fruit Cd concentration
(1.149 mg kg
-1
2
) was obtained in S
5
T
0
and lowest (0.097 mg kg
-1
4
2
) in S
treatment
combinations. The highest okra Pb concentration (1.182 mg kg
-1
and S
4
2
T
2
1
T
2
) was found in S
and
lowest Pd (0.053 mg kg
-1
)
accumulation was observed in S
3
T
. The highest okra dry matter
Cd concentration (0.523 mg kg
-1
) was found in S
4
T
1
0
treatment combinations and lowest Cd
accumulation was observed in S
2
T
. The higher levels of toxic metals accumulated in
fertilizer control treatment and lower accumulation was found in contaminated soil with 50%
inorganic fertilizer plus 50% nutrient from manure.
0
0
-1
0
1
T
0
0
2026-06-01T00:00:00Z