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Articles by Rehenuma Tabassum
Total Records ( 4 ) for Rehenuma Tabassum
  Rehenuma Tabassum , Md. Abdul Malek and Fakhrul Islam Monshi
  Seven mutants of rapeseed (RM-01-05, RM-02-05, RM-03-05 RM-04-05, RM-05-05, RM-10-05 and RM-11-05) along with mother variety Binasarisha-4 were evaluated in four different locations to evaluate their performances regarding seed yield and yield contributing characters and to select promising mutants having high seed yield with short maturity period. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Results showed significant variation among the mutant lines and check variety for most of the characters in four different locations. Combined means that all mutants matured earlier and most of the mutants produced higher number of branches per plant compared to mother variety. Combined means over locations showed that three mutants namely RM-01-05, RM-04-05 and RM-10-05 produced the seed yield of 1957, 1910 and 1837 kg ha–1, respectively which were significantly higher than the mother variety. These three mutants also produced higher number of siliquae per plant, seeds per siliqua and 1000-seed weight than the other mutants and mother variety and may used for further study for achieving a rapeseed variety for the Bangladeshi farmers. In location wise performance of all the characters, Magura showed the best followed by Ishurdi than the other two locations, may be due to the environmental and soil characteristics of a particular location. Therefore, present research suggests that gamma rays irradiation can be fruitfully applied to develop mutants with higher seed yield and other improved agronomic traits in Oleiferous brassica.
  A.F.M. Saiful Islam , Md. Monjurul Haque , Rehenuma Tabassum and Md. Muzahedul Islam
  An experiment was conducted at Plant Physiology laboratory of Bangladesh Institute of Nuclear Agriculture, Mymensingh, Bangladesh to investigate the effect of defoliations on crop characters, yield attributes and yield of two tomato varieties. The experiment comprised five levels of defoliation viz., 0 (control), 3, 6, 9 and 12 leaves defoliation out of 16 leaves and two varieties viz., Binatomato-4 and Binatomato-5. The experiment was laid out in two factors completely randomized design with four replications. Results revealed that defoliation and variety had significant effect on the studied crop characters and yield except the number of effective flower clusters per plant and fruit yield for variety. Most of the parameters like plant height, number of branches and leaves per plant, straw weight per plant, number of effective and non effective flower cluster per plant, number of flowers and fruits per plant, individual fruit weight and fruit yield per plant increased with defoliations over control up to 6 leaves and produced the highest in 3 leaves defoliated plant whereas the lowest was obtained in 12 leaves defoliated plants followed by 9 leaves defoliated plants. Therefore, due to the performance of morphological and yield attributing traits especially number of fruits per plant and number of fruits per cluster were superior in Binatomato-5 but fruit yield was inferior compared to Binatomato-4 in respect of smaller fruit size.
  A.F.M. Saiful Islam , Md. Saidul Islam and Rehenuma Tabassum
  Nine inbreed and 8 hybrid genotypes of tomato were collected from AVRDC to evaluate the growth and yield attributing traits comparing with two local varieties viz., Raton and Binatomato-5 at Bangladesh condition. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications and found significant variation in all the characters. Among all, inbreed genotype CLN-2777A produced the highest yield (75.24 t ha–1), which was closely followed by hybrid genotype WVCT-8 (70.21 t ha–1), inbreed genotype CLN-2413 (68.63 t ha–1) and two local varieties Raton (67.92 t ha–1) and Binatomato-5 (66.87 t ha–1). The inbreed genotype CLN-2777B and CLN-2777F produced the lowest yield 17.90-24.08 t ha–1, respectively. Besides the yield, inbreed genotype CLN-2777A also produced the highest number of leaves per plant (78.20), number of primary branches per plant (9.10), harvesting duration (48.10 days), fruit weight per plant (2.25 kg) with 53.90% reproductive efficiency and the 2nd highest yield producing genotype WVCT-8 also produced the highest number of flowers per cluster (10.40), number of flowers per plant (146.60), number of fruits per cluster (3.70) and days to first harvest (95.90). Comparing yield and yield contributing characteristics, exotic hybrid genotypes performed better than exotic inbreed but the local varieties performed constantly better. The present results indicated that the exotic inbreed genotype CLN-2777A and hybrid genotype WVCT-8 may be selected as high yielding tomato variety in Bangladesh.
  Md. Shakhawat Hossain , Fakhrul Islam Monshi and Rehenuma Tabassum
  Background and Objective: The hybrid rice varieties are recommended for commercial cultivation in their individual countries but in the present study, researchers were tried to find out the genotypic ability of some exotic varieties in Bangladesh climatic condition. An experiment was carried out to investigate the genotypic ability of 17 exotic hybrid rice varieties by assessing morpho-physiological and yield attributing traits grown in Mymensingh, Bangladesh. Materials and Methods: The Randomized Complete Block Design (RCBD) was followed in the experiment with 3 replications of each treatment. Data were collected randomly from 5 selected plants per plot and the following parameters were recorded during the course of the experiment such as plant height, number of effective tiller, panicle length, days to maturity, unfilled grain, filled grain, grain length, grain width, date of 50% flowering, 1000 seed weight and yield per hectare. Then, one way analysis of variance (ANOVA) were done with the help of computer software package MSTAT-C program. Results: The divergence among the genotypes for all traits studied was found highly significant at 5%. level. The mean values for plant height ranged from 89.6-109.5 cm, number of effective tillers per plant from 6.12-11.32, panicle length from 17.43-25.18 cm, 1000-seed weight from 19.89-34.62 g and grain yield from 6.67-10.85 t ha–1. Higher grain yield (10.85 t ha–1) was harvested from cultivar HS-916 closely followed by the genotype HSD-651 (10.06 t ha–1) and HS-100 (9.83 t ha–1).Grain yield was significantly (at 5% level) and positively correlated with days to flowering, days to maturity, panicle length, filled grains per panicle and 1000 grain weight. The results further revealed that genotypes with medium plant height and maturity produced the highest number of tillers and ultimately gave maximum yield. Conclusion: After assessing all the characters, the hybrid variety HS-916 produced the highest grain yield along with HSD-651 and HS-100, those may be recommended for cultivation in Bangladesh climatic condition for higher yield.
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