Year 2008http://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/27182024-03-29T13:03:29Z2024-03-29T13:03:29ZINFLUENCE OF ARBUSCULAR MYCORRHIZAL FUNGI ON GROWTH AND NUTRIENT UPTAKE OF SOME VEGETABLEALI, MD. MOMRAZhttp://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/42522022-09-20T05:07:00Z2008-01-01T00:00:00ZINFLUENCE OF ARBUSCULAR MYCORRHIZAL FUNGI ON GROWTH AND NUTRIENT UPTAKE OF SOME VEGETABLE
ALI, MD. MOMRAZ
A pot experiment was conducted in the net house of the Department of Plant
Pathology, Sher-e-Bangla Agricultural University, Dhaka during the period
from May 2006 to December 2006 with a view to study the role of Arbuscular
Mycorrhizal (AM) fungi on growth and nutrient uptake of vegetable
crops(Brinjal,Tomato,ChiJIi,Okra and Data). Significant positive growth
response to AM was observed in all the selected vegetables. The seedling
emergence, plant height, shoot length and root length of inoculated vegetables
were comparatively higher than that of uninoculated control. Mycorrhizal fungi
inoculation significantly enhanced disease reduction in all the treatment
compared to control plant. In case of Okra the incidence of damping off and
foot rot were )0.78% and 6.48% in noninoculated plant whereas 4.52% and
3.24% in inoculated mycorrhizal plant respectively. No leaf spot disease in
inoculated plant was found. Mycorrhizal dependency (MD) of the vegetables
ranged from 15.58% to 31.38%.Among the vegetable studied the "highest
mycorrhizal dependency (31.38%) was observed in Brinjal and the lowest MD
(15.58%) was observed in Chilli. Okra recorded the second highest MD
(26.82%) which was followed by Data (24.79%) and Tomato (18.56 %). N, P,
K, Zn and Fe uptake were. influenced significantly by the inoculation of AM
fungi over control in all the tested vegetables.
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka
in Partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
PLANT PATHOLOGY
2008-01-01T00:00:00ZMORPHOLOGICAL AND MOLECULAR CHARACTERIZATION OF BLAST RESISTANT GENOTYPES OF RICERAHMAN, MD. MOTIURhttp://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/42512022-09-20T05:04:28Z2008-01-01T00:00:00ZMORPHOLOGICAL AND MOLECULAR CHARACTERIZATION OF BLAST RESISTANT GENOTYPES OF RICE
RAHMAN, MD. MOTIUR
Genetic divergence analysis was done for blast resistant and susceptible genotypes
using 13 morphological characters. The genotypes were grouped into seven clusters
according to D2 statistic and Canonical Vector analysis. Plant height, days to
flowering, days to maturity, panicle length, number of spikelet/ panicle, number of
filled grain/ panicle, number of unfilled grain/ panicle, 1000 filled grain weight(gm),
yieldlhill(grn) were indicated as important contribution to genetic divergence in 14
rice genotypes. On the basis of cluster distances, high yielding along with highly
susceptible (BRR] dhan 29) genotypes could be crossed highly resistant genotypes
(BR 6017-3-3-4-1, ZHONG-YU 7) and BRR] dhan 28 and BRR] dhan 36 could be
croosed with QING LIALI NO] for the development of blast resistant rice varieties.
A total of 8 microsatellite and 3 minisatellite or VNTR markers were used for
studying molecular variabi lity across 14 blast resistant and susceptible rice genotypes.
A total of 33 alleles were detected at the loci of 8 microsatellite markers across 14
blast resistant and susceptible rice genotypes. The number of alleles per locus ranged
from 2 alleles (RM ) OS) to 5 alleles (RM21, RMSO, RM531), with an average of 4.13
alleles across the 30 loci. The Polymorphism Information Con ten! (PIC) values
ranged from 0.2S0 (RMIOS}'to 0.726 (RM21). PJC value revealed that RM21 was
considered as the best marker for 14 rice genotypes. The two dimensional graphical
view of Principal Coordinate Analysis (PCoA) for blast resisitant genotypes showed
the genotypes ZhongYu7, OM1207, SIPI692033, BRRI dhan29, BRRI dhan36,
QINGLlALJ 1, JR 60913-42-3-3-2-2 and NJ70507 were found placing far away from
the centroid of the cluster and rest of the genotypes were placed more or less around
the centroid. The genetic similarity analysis using UPGMA clustering system
generated nine genetic clusters with similarity coefficient of 0.66 for the study with
blast disease resistance. The pair-wise genetic dissimilarity coefficients indicated that
the highest genetic distance was obtained between NJ70507 with BR36 & BR29 for
blast disease. In order to develop blast resistant varieties and broaden the genetic base
of rice varieties new breeding program should initiated preferably using the parents,
BRRldhan29 and NJ70507 and BRRldhan36 and NJ70507 and to create genetic
variability among these two modem rice varieties. Both molecular and morphological
data did not show the similar results. So, use of more molecular markers might be
resolved the results of morphological analysis.
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka
in Partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
PLANT PATHOLOGY
2008-01-01T00:00:00ZMYCORRHIZAL STATUS OF CROPS GROWN IN ARSENIC AFFECTED AREAS OF MANIKGANJ DISTRICT AND ROLE OF MYCORRHIZAE ON GROWTH OF SELECTED CROS IN ARSENIC AMENDED SOILSABA, NIBIR KUMARhttp://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/42502022-09-20T05:01:22Z2008-01-01T00:00:00ZMYCORRHIZAL STATUS OF CROPS GROWN IN ARSENIC AFFECTED AREAS OF MANIKGANJ DISTRICT AND ROLE OF MYCORRHIZAE ON GROWTH OF SELECTED CROS IN ARSENIC AMENDED SOIL
SABA, NIBIR KUMAR
Crops are often contaminated with arsenic in Bangladesh. This result from irrigation
water contaminated with arsenic and leads to problems in human health. Mycorrhizal
fungi have their most significant effect on P uptake and have also been shown to reduce
arsenic contamination 10 the crops. The present experiment was performed to know the
mycorrhizal status of different crops root collected from different arsenic affected
villages of Manikganj district. This study also determined the role of arbuscular
mycorrhizal fungi on crops growth in arsenic amended soil. Three crops (tomato. radish
and garlic) were grown in arsenic amended soils with or without mycorrhizal inoculation.
Three levels of arsenic concentrations (1 Oppm, IOOppm and 500ppm) were used. At
higher concentration of arsenic, the seed germination was affected more than the other
treatments. A positive germination response to AMF inoculation was observed in all the
selected crops. In case of garlic, the seed germination, all physical growth was higher at
500ppm treated pots but lower in other two crops. In case of tomato and radish shoot
height, root length, number of leaves, both fresh and dry weight of shoots and roots,
mycorrhizal root colonization and percent vigor were higher in AMF inoculated pots in
comparison to their respective treatments and decreased significantly with the increase
rate of arsenic concentrations. Higher nutrient uptake and less arsenic content were
recorded in rnycorrhiza inoculated plants. The findings indicate that AMF inoculation not
only minimize arsenic toxicity but also can increase growth and nutrient uptake of crops.
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka
in Partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
PLANT PATHOLOGY
2008-01-01T00:00:00ZMYCORRHIZAL STATUS OF CROPS GROWN IN ARSENIC AFFECTED AREAS OF SONARGAON AND INFLUENCE OF MYCORRHIZAE ON GROWTH OF SELECTED CROPS IN ARSENIC AMENDED SOILAKHTER, BONYAhttp://archive.saulibrary.edu.bd:8080/xmlui/handle/123456789/42492022-09-20T04:57:19Z2008-01-01T00:00:00ZMYCORRHIZAL STATUS OF CROPS GROWN IN ARSENIC AFFECTED AREAS OF SONARGAON AND INFLUENCE OF MYCORRHIZAE ON GROWTH OF SELECTED CROPS IN ARSENIC AMENDED SOIL
AKHTER, BONYA
The contamination of crops because of irrigation with arsenic contaminated water
causing problem in human health in Bangladesh. Mycorrhizal fungi can reduce the
contamination of arsenic toxicity to the crops. This study were conducted the mycorrhizal
status of different crop roots collected from different arsenic (As) affected villages of
Sonargaon area and also examined the role of arbuscular mycorrhizal fungi on some
selected crops (wheat, spinach and red amaranthus) grown _inarsenic amended soil. Plants
were grown with or without arbuscular mycorrhizal fungi (AMF) inoculation in soil
amended with three levels of arsenic solution (1Oppm.1OOppmand 500ppm). The higher
concentration of arsenic contaminated soil affected the seed germination. At 500ppm,
treated soil completely inhibited seed germination of red amaranthus but little
germination was found in wheat and spinach.' A positive germination response to AMF
was observed in all the selected crops. Root length, shoot height, leaf number, fresh and
dry weight of shoot and root, mycorrhizal root colonization, per cent vigority, nutrient
(N, P, K and S) uptake increased significantly due to mycorrhizal infection and decreased
significantly with increasing arsenic concentrations. Mycorrhizal inoculation reduced As
concentration in shoots of red amaranthus. Thus, crops with compatible AMF inoculation
can minimize arsenic toxicity and increase plants growth and nutrient uptake.
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka
in Partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
PLANT PATHOLOGY
2008-01-01T00:00:00Z