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| Articles
by
M.L. Rahman |
Total Records (
4 ) for
M.L. Rahman |
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A.K.M. Azad-ud-doula Prodhan
,
M.L. Rahman
and
M.A. Haque
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The plant height was studied in Corchorus capsularis (cultivars D-154 and CVL-1) and Corchorus olitorius (cultivars O-4 and R-26) grown under various water regimes. The cultivars were grown under constant drought, constant saturation, alternate saturation and drought and different levels of standing water (5 cm, 10 cm, 20 cm and 30 cm) conditions. The cultivar O-4 had been found to be tolerant to drought but susceptible to waterlogging condition, particularly at the young stage. On the tolerance of submersion, the test cultivars could be placed as D-154 > CVL-1 > R-26 > O-4. The plants of CVL-1 became shorter than that of the O-4 in constant drought. On the contrary, the plants of O-4 and R-26 became shorter than that of the CVL-1 and D-154 in standing water conditions. The plants of O-4 and R-26 died earlier when they were exposed to standing water condition in young stage compared to those of the CVL-1 and D-154. It appears that the plant height is highly affected by constant drought in case of Corchorus capsularis and by standing water in case of Corchorus olitorius. The stressed plants of all the cultivars are shorter than their corresponding control plants. |
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A.K.M. Azad-ud-doula Prodhan
,
M.L. Rahman
and
M.A. Haque
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The plant base diameter was studied in Corchorus capsularis L. (cv. CVL-1 and D-154) and Corchorus olitorius L. (cv. O-4 and R-26) grown under constant drought, constant saturation, alternate saturation and drought, and different levels of standing water (5 cm, 10 cm, 20 cm and 30 cm) conditions. The cultivar O-4 had been found to be tolerant to drought but susceptible to waterlogging condition, particularly at the young stage of growth. On the descending order of base diameter and tolerance of submersion, the test cultivars could be placed as CVL-1 > D-154 > R-26 > O-4. The base diameter of CVL-1 plants decreased in constant drought condition as compared to that of O-4 plants. At the age of 90 days, the decrease in base diameter in CVL-1 plants was doubled compared to that of O-4 plants. On the contrary, the base diameter of O-4 and R-26 plants decreased in standing water condition compared to that of CVL-1 and D-154 plants. The CVL-1 plants died earlier in constant drought. The O-4 and R-26 plants died earlier in standing water condition compared to CVL-1 and D-154 plants. It appeared that the base diameter highly affected by standing water in case of Corchorus olitorius and by constant drought in case of Corchorus capsularis. The base diameter of all the stressed plants decreased in comparison with those of control plants. |
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M.L. Rahman
,
M.R. Islam
,
M. Masuduzzaman
and
M.Z.I. Khan
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The different parts of digestive system of one-day old, 30 days, 90 days and 180 days old
deshi chickens were taken in fresh state and stained with hematoxylin and eosin (H and
E). The aim of this study was to investigate the distribution of lymphocytes in the
different histological layers of the digestive tract of deshi chicken at the different ages
of postnatal growth and development. In the present study the Intraepithelial
Lymphocytes (IELs) were not abundant in the upper segments of the digestive tract
(oesophagus, crop, proventriculus and gizzard), however these immunocompetent cells
were abundantly found in the distal part of the digestive tract (duodenum, jejunum,
Meckel`s diverticulum, ileum, caecum, cecal tonsil and colorectum). The population of
IELs in the distal part of the tract were found higher from day 90 to day 180 of postnatal
period of development, however in the jejunum, caecum and ceacal tosil the frequency
were found abundant at day old ages only. The lamina propria of the different segments
of digestive tract contain isolatory and diffuse lymphocytes. In addition to these isolatory
lymphatic nodules and aggregated lymphatic nodules were present and there were higher
in frequency at day 90 and at day 180 of postnatal ages. The lymphocytes were also
distributed scatteredly in the submucosa and tunica muscularis in all the stages of
development. These results suggest that the development of the population of
lymphocytes in the postnatal period vary with the different segments of the digestive tract
concerned and aging of chicken of Bangladesh. |
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M.M. Islam
,
K.Sultana
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M.M. Hussain
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M.G. Mostafa
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M.R. Islam
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M.L. Rahman
and
M.A.Kashem
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An experiment was conducted to assess the effect of different inoculation times with MS-6, MS-9 strains of Macrophomina phaseolina and CS-1 strain of Colletotrichum corchori on the seed yield contributing characters and quality of late jute seeds (Corchorus capsularis L). Varieties were BJC-7370 and CVL-1. Results showed that inoculation with the pathogens was conducted on 45,55,65 days age of the jute plants. Variety BJC-7370 and CVL-1 of jute had reaction with strains MS-6, MS-9, and CS-1 at every inoculation times. The gradual increase of inoculation affected the plants. As the time of inoculation increases the lesion size on stem decreases, the number of pods plant-1, seeds plant-1 and Seed germinations (%) increases and at the same time seed infections (%) decreases. MS-6 strain was found more virulent than MS-9 and CS-1 regarding pods plant-1 and seeds plant-1 production, as well as seed germinations and infections(%). |
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