http://localhost:8080/handle/123456789/2782 2026-04-18T14:15:47Z 2026-04-18T14:15:47Z Akter, Mahmuda http://localhost:8080/handle/123456789/389 2019-10-02T05:01:14Z 2013-12-01T00:00:00Z

EFEECT OF VARIETY AND NITROGEN LEVELS ON THE FOLIAGE YIELD OF CORIANDER (Coriandrum sativum L.) Akter, Mahmuda A field experiment on coriander (Coriandrum sativum L.) was conducted at the Agricultural Botany farm of Sher-e-Bangla Agricultural University (SAU), Sheree-Bangla Nagar, Dhaka during the rabi season of December 2012 to January 2013 to find out the appropriate variety and suitable nitrogen dose for the maximum foliage yield of the crop. The experiment was laid out in factorial randomized complete block design with three replications. The treatment consisted of five varieties, namely, Champak super one, Rosina, Green Beauty, Multicut 5X and Faridpur local, and four nitrogen doses viz. control (no nitrogen), 30, 60 and 90 kg Nha-1. The treatment effects were found significant in most of the parameters studied. The maximum plant height, plant spread, number of leaves plant-1, length of the longest leaf; single plant weight and fresh plant weight m-2 were obtained from the variety Rosina and 90 kg N ha-1. Application of 60 and 90 kg N ha-1 gave statistically similar results in respect of the above foliage yield contributing parameters. The variety Rosina and 90 kg N ha-1 independently as well as in combination gave the highest foliage yield of coriander. The nitrogen doses of 60 kg and 90 kg ha-1 were identical in producing foliage per hectare. The performance of the variety Faridpuri or Local was the poorest in terms of foliage yield and yield contributing characters. A Thesis Submitted to the Department of Agricultural Botany Sher-e-Bangla Agricultural University, Dhaka in partial fulfilment of the requirements for the degree of MASTER OF SCIENCE IN AGRICULTURAL BOTANY SEMESTER: JULY- DECEMBER, 2014

2013-12-01T00:00:00Z JAHAN, MURSHIDA FERDOUS ARA http://localhost:8080/handle/123456789/388 2019-10-02T05:01:26Z 2013-12-01T00:00:00Z

GROWTH, RESERVE REMOBILIZATION AND ITS CONTRIBUTION TO THE YIELD OF HYBRID RICE VARIETIES IN AMAN SEASON JAHAN, MURSHIDA FERDOUS ARA The experiment was conducted at the Research Farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar. Dhaka to evaluate the growth, reserve remobilization and its contribution to the yield of hybrid rice varieties in Aman season. The experiment was laid out in Randomized Complete Block Design with three replications. Seven rice variety viz. BRRI dhan46, BRRI hybrid dhan2, Heera2, Fin, Alomn, Sonarbangla3 and Taj were used as test crop. Growth characters yield and yield attributes were significantly varied among the studied varieties. Heera2 exhibited superiority over other hybrid and inbred varieties in respect of growth characters like tillers hiw', leaf area index (LA!), stem dry matter hill' leaf dry matter hill', total dry matter hill'. The highest shoot dry matter at pre- and post-anthesis stages (29.88 g m 2 and 25.03 g m 2) was achieved in Heera2 while the lowest was (23.98 g m 2 and 21.56 g m2) in BRRI dhan46. The significantly highest shoot reserve translocation (16.23%) was recorded from Heera2, while the lowest (10.09%) was achieved from BRRI dhan46. All the hybrids exhibited higher shoot reserve translocation compared to the used inbred. Yield components viz. panicles hill' 1000-grain weight, spikelets fertility (%) mainly contributed to the higher grain yield of hybrid varieties. The significantly highest grain yield (7.70 t ha") were obtained from Heera 2 which was closely followed by Sonarbangla3 (7.37 t ha") and the lowest (4.12 t ha") was recorded from BR.R1 dhan46. All the hybrid rice varieties exhibited higher grain yield over the inbred in Amati season. A Thesis Submitted to the Faculty ofAgriculture. Sher-c-Bangla Agricultural University, Dhaka, in panial fulfillment of the requirements for the degree of U  MASTER OF SCIENCE IN AGRICULTURAL BOTANY SEMESTER: JULY-DECEMBER, 2013

2013-12-01T00:00:00Z PARVIN, KHURSHEDA http://localhost:8080/handle/123456789/387 2019-10-02T05:01:38Z 2013-12-01T00:00:00Z

MITIGATION OF SALT STRESS IN TOMATO BY EXOGENOUS APPLICATION OF CALCIUM PARVIN, KHURSHEDA A pot experiment was conducted in the Horticulture Farm of Sher-e-Bangla Agricultural University, Dhaka, during the period from October 2013 to March 2014 to study the salt stress mitigation in tomato by exogenous application of calcium (Ca2+). The two factors experiment was laid out in Randomized Complete Block Design (RCBD) with four replications. Factor A is different levels of salinity induced by sodium (Na+) viz. 0, 2, 4, 6 and 8 dSm-1 and factor B is different concentration of Ca2+ viz. 0, 5, 10 mM. The total treatment combinations were 15 (5×3). The experimental results showed that salt stress significantly affects morphology, physiology, yield contributing characters and yield of tomato. Plant height, leaf number and branch number per plant were reduced with increased levels of salinity mostly at 6 and 8 dSm-1. Salinity also adversely affected the leaf and stem dry weight (gm), leaf area (cm2), leaf chlorophyll content, number of flower plant-1, number of dropped flower plant-1, number of fruit plant-1 and also fruit weight plant-1 mostly at 8 dSm-1. Salt treatment greatly increased the uptake of Na+ and decreased both potassium K+ and Ca2+ uptake in the leaves of tomato. Exogenous application of Ca2+ significantly mitigates the adverse effects of salinity on plant biomass production or morphology, physiology and yield. The plant height, leaf number plant-1, branch number plant-1, leaf area (cm2) plant-1, dry weight of shoot plant-1 (gm), leaf chlorophyll content as measured in SPAD value, the highest number of flower and fruit plant-1, fruit weight plant-1 were increased with the application of calcium than the control or without calcium. In addition, the uptake of Na+ decreased and uptake of Ca2+ and K+ increased in tomato shoot while plants were treated with Ca2+ under salt stress. The yield of tomato is gradually decreasing with the increasing levels of salinity. Interestingly, the rate of reduction of yield of tomato was decreased with Ca2+ in response to different saline conditions and the lowest yield was recorded at the highest salinity (8 dSm-1) along with without Ca2+. The present study also showed that the highest fruit yield recorded with without salt and 5 mM Ca2+ treatment combination which was statistically similar with control treatment combination. These results are consistent with the findings of regulation of ion uptake in presence or absence of Ca2+ at different levels of Na+ stress. Therefore, this experiment suggests that Ca2+ can effectively mitigate the deleterious effect of Na+ stress in tomato cultivation.

2013-12-01T00:00:00Z JANNAT, TOWFIA http://localhost:8080/handle/123456789/386 2019-10-02T05:01:51Z 2013-12-01T00:00:00Z

PERFORMANCE OF SOME SELECTED HYBRID RICE VARIETIES IN AUS SEASON JANNAT, TOWFIA The experiment was conducted at the experimental farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka during March to August (Aus season), 2013 to study the performance of some selected hybrid rice varieties namely BRRI hybrid dhan1, BRRI hybrid dhan2, ACI hybrid2, Jagoron and Panna1. Inbred BRRI dhan48 was used as check variety. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Growth characters, yield and yield attributes were significantly different among the studied varieties. All the studied hybrid varieties exhibited superiority in respect of growth characters viz. plant height, tillers hill-1, stem dry matter hill-1, leaf dry matter hill-1, total dry matter hill-1, leaf area index (LAI) over the inbred BRRI dhan48, Flag leaf chlorophyll content and chlorophyll a:b ratio, and light interception (%) were higher in all the hybrid rice varieties compared to the inbred. ACI hybrid2, Jagoron and Panna1 showed better performance in yield related characters viz. effective tillers hill-1, spikelets fertility (%) and 1000-grain weight over the rest test varieties. Consequently, these three hybrid varieties produced the considerable higher grain yield compared to BRRI dhan48 ( 2.51 t ha-1). Higher grain yield of these varieties was related with their higher dry matter production.Among the hybrid rice varieties, ACI hybrid 2 provided the highest grain yield (3.05 t ha-1) which was closly followed by Jagoron (2.97 t ha-1) and Panna1 (2.82 t ha-1). 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 IN AGRICULTURAL BOTANY SEMESTER: JULY-DECEMBER, 2013

2013-12-01T00:00:00Z