http://localhost:8080/handle/123456789/2779 Sat, 18 Apr 2026 14:12:57 GMT 2026-04-18T14:12:57Z http://localhost:8080/handle/123456789/377 EFFECT OF SUBMERGENCE AT VEGETATIVE PHASE ON MORPHOLOGICAL ATTRIBUTES AND YIELD OF SOME RICE VARIETIES SULTANA, TANIA ilie experiment was conducted during June to December, 2011 in T. Aman season to observe etièct of submergence at vegetative phase on the morphological attributes and yield of some rice varieties. Four submergence duration, viz., Control (no submergence), Six days submergence. Ten days submergence and Fourteen days submergence and six varieties, viz.. BRRI dhan5l. BRRI dhan46. BRRI dhan34. BRRI hybrid dhanl, BRRI hybrid dhan2. ACI tiybridl were used for this experiment. The experiment was laid out in Split Plot Design with three replications. All parameters were significantly affected by the submergence duration and variety. The tallest plant was recorded from fourteen days submergence treatment. The highest number of leaves, number of tillers hilr'. and number of grains panicle", weight of 1000 grains were recorded from no submergence. The highest grain yield was found from no submergence (control). The tallest plant was observed in BRRI hybrid dhan2. The highest number of leaves, number of tiller hill", number grains panicle" and 1000-grain weight were achieved in BRRI dhan5l. The BRRI hybrid dhanl produced the highest (7.83 t ha") grain yield. The highest (8.50 t ha") grain yield was found from BRRI hybrid dhanl with no submergence (control) and the lowest (1.20 t ha") from BRRI dhan34 with fourteen days submergence. The test genotypes showed wide variation in yield reduction at different submergence duration. BRRI dhan5 I followed by BRRI hybrid dhanl showed lower grain yield reduction % in submerged conditions compare to control by attaining good yield contributing characters and thus proved as tolerant varieties. On the other hand, BRRI dhan34 and AC1 hybridl were susceptible to submergence. A Thesis Subm i/ted to the Department ofAgricultural Botany Sher-e-Bangla Agricultural University, Dhaka, in partial fulfillment oft/ic requirements for the degree 9'- MASTER OF SCIENCE IN AGRICULTURAL BOTANY SEMESTER: JANUARY-JUNE/201 I Wed, 01 Jun 2011 00:00:00 GMT http://localhost:8080/handle/123456789/377 2011-06-01T00:00:00Z http://localhost:8080/handle/123456789/376 MORPHOLOGY YIELD AND SEED QUALITY OF RAPESEED (Brassica campestris L.) AS INFLUENCED BY NITROGEN AND ZINC Rimi, Tahmina Akter The experiment was undertaken during rahi season. November 2011 to February 2012 to examine the response of different levels of nitrogen and zinc application on morphology yield and seed quality of rapeseed (Brassica campesiris L.) variety BARI Sarisha 15. In this experiment, the treatment consisted of four different N levels viz. No = 0 kg N/ha, N1 = 60 kg N/ha, N2 = 120 kg N/ha and N3= ISO kg N/ha, and three different level of Zn viz. Zn0 = 0 kg/ha. Zn1= 1 kg Zn/ha. Zn, =2 kg Zn/ha. The experiment was laid out in two factors Randomized Complete Block l)esign (RCBD) with three replications. Results of the experiment showed a significant variation among the treatments in respect of the majority of the observed parameters. The 120 kg N/ha resulted the highest plant height, number of leaves per plant, number of branches per plant, length of inflorescence, number of siliquae per plant, seed weight of hundred siliquae, thousand seed weight. The maximum yield of seed per hectare (3.57 t) was obtained from 120 kg N/ha. The maximum number of siliquae per plant, seed weight of hundred siliquae. thousand seed weight, seed yield (3.31 tiha) was recorded with 2 kg Zn/ha. Separately, application of Zn did not show signiFicant difference on morphological parameters such as plant height, number of leaves per plant and length of inflorescence as N. In addition, oil content of rapeseed varied significantly with both N and Zn independently whereas germination percent had no effect with either N or Zn. These results indicated that N has role on both vegetative and reproductive phases but Zn only on reproductive phase. The interaction between different levels of N and Zn was significantly influenced on almost all morphological parameters and yield contributing characters, seed yield and oil content. The maximum value of morphological parameters, yield contributing characters, seed yield of rapeseed was observed with the combined dose of 120 kg N/ha along with 2 Kg Zn/ha whereas the lowest values were obtained from control. 0 kg N/ha and 0 kg Zn/ha treatment combination. The maximum yield of seed per hectare (4.22 tones) and the maximum oil content (43.29%) was obtained from 120 kg N/ha with 2 Kg Zn/ha treatment combination. Based on the present results, it can be suggested that the combined use of 120 kg N/ha with 2 kg Zn/ha increased plant morphological parameters, seed yield and oil content of rapeseed. A Thesis Submitted to the Department ofAgricultural Botany Slier-c-Bang/a Agricultural University, Dhaka, in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN AGRICULTURAL BOTANY SEMESTER: January-June, 2011 Wed, 01 Jun 2011 00:00:00 GMT http://localhost:8080/handle/123456789/376 2011-06-01T00:00:00Z http://localhost:8080/handle/123456789/375 ROLE OF GIBBERELLIC ACID AND BORON ON GROWTH AND YIELD OF TOMATO(Solanwn Iycoperskwn L.) LABONY, ISMAT ARA The field experiment was conducted at the Sher-e-Bangla Agricultural University Farm, Dhaka. Bangladesh from October 2011 to March, 2012 to evaluate the role of gibberellic acid and boron on growth and yield of tomato. Four dose of gibberilic acid, viz., No Gibberellie Acid (GA3). 10 ppm (GA3), 20 ppm (GA3) and 30 ppm (GA3) and three levels of boron. viz., no Boric Acid, 1.5625 Kg Boric Acid/ha and 3.125 Kg Boric Acid/ha were used to conduct this experiment. The experiment was laid out in Randomized complete Block Design (RCBD) having two factors and replicated three limes. The main effect of gibberilie acid indicated that, the plant height was influenced significantly by the gibberllic acid. The tallest plant, maximum number of leaves per plant, number of branches per plant, maximum number of flowers cluster per plant, number of flowers per cluster, number of flowers per plant were produced by 30 ppm gibberellic acid. The earliest of days of first flowering, earliest in 50% flowering, maximum number of fruits per cluster, number of fruit per plant, minimum percent of fruit dropping, earliest of days of first harvesting), the longest fruit length, largest fruit breath, largest individual fruit weight was observed in 20ppm gibberellic acid. The different gibberellic acid had significant effect on the yield of fruits per hectare. The maximum yield of fruits per hectare (68.00 tones) was obtained 20pprn gibberellic acid. The maximum growth and yield contributing character of tomato was observed in 3.125 Kg Boric Acid/ha. The highest yield of fruit (67.14 tlha) was obtained from 3.125 Kg Boric Acid/ha. The interaction between different gibberellic acid and boron was significantly influenced on the all growth and yield characters. The maximum growth and yield contributing character of tomato was observed in 20.00 ppm of gibberellic acid with 3.125 Kg boric acid per ha. The highest yield of fruits per hectare (78.56 tones) was obtained from 20 ppm GA3 with 3.125 Kg Boric Acid/ha. A Thesis Submitted to the Department of Agricultural Botany Sher-e-Bangla Agricultural University, Dhaka, in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN AGRICULTURAL BOTANY SEMESTER: January - June, 2011 Wed, 01 Jun 2011 00:00:00 GMT http://localhost:8080/handle/123456789/375 2011-06-01T00:00:00Z http://localhost:8080/handle/123456789/374 EFFECT OF DIFFERENT LEVELS OF NITROGEN AND BORON ON MORPHOLOGICAL CHARACTERS, YIELD AND SEED QUALITY OF RAPESEED (Brassica canipestris L.) ARA, JESMIN The experiment was conducted at the experimental Field of Sher-e-Bangla Agricultural University, Dhaka during the rabi season from November 2011 to February 2012 to evaluate the effect of different levels of nitrogen (N) and boron (B) on morphological characters, yield, oil content and germination percent of rapeseed (Brassica campexiris L.). The experiment was factorial with two factors, factor A consisted of four different N levels viz. 0, 60, 120. 180 (kg/ha) and factor B consisted of three different levels of B(boron) viz. 0. I, 2 (kg/ha). The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The collected data were statistically analyzed for evaluation of the treatment effect. Results showed significant variation in almost every parameter. The plant height, leaves plan(', Primary and secondary branches plant-I, length of inhiorescence at different days after sowing increased significantly with increasing rate of N. interestingly, B did not show any significant variation on above parameters. As N, application of B significantly increased siliquae on main inilorescence, seed weight of 100 siliquae, seed weight plant-i, thousand seed weight, seed yield (t hi') and harvest index as dose dependent manner. In addition, oil content of rapeseed showed varied significantly with both N and B independently, whereas N and B had no significant effect on germination percent of seed. These results indicated that N exhibited significant influence on morphological characters, yield, oil content and germination percent of seed whereas B showed differences on these parameters other than morphological characters. The interaction between different levels of N and B significantly influenced almost all morphological and yield contributing characters, seed yield and oil content of seed. The maximum value of morphological characters. yield contributing characters, seed yield and oil content of rapeseed was observed with the combined dose of 120 kg N/ha and 2 Kg B/ha (N2132) whereas the lowest values were obtained from control i.e., N0B0 treatment combination. The maximum yield of seed per hectare (1.78 t) and the maximum oil content (42.96 %) was obtained from 120 kg N/ha with 2 Kg B/ha treatment combination. Separately, the combined use of N and B did not show any significant differences on germination percent of rapeseed. Based on the present results, it can be suggested that the combined doses of 120 kg N/ha with 2 kg B/ha (N2B2) is appropriate for higher yield and quality seed production of rapeseed cv. BAR!Sarisha 14. A Thesis Suhm it/ed to the Department ofAgricultural Botany Sher-e-Bangla Agricultural University, Dhaka, in partial fit/fl//ment of the requirements for the degree of MASTER OF SCIENCE IN AGRICULTURAL BOTANY SEMIESTER: January-June, 2011 Wed, 01 Jun 2011 00:00:00 GMT http://localhost:8080/handle/123456789/374 2011-06-01T00:00:00Z