http://localhost:8080/handle/123456789/2755 2026-04-18T16:17:43Z 2026-04-18T16:17:43Z ZULQUARNINE, SYED ABU SIAM http://localhost:8080/handle/123456789/2519 2019-10-20T05:56:20Z 2006-01-01T00:00:00Z

GENETIC DIVERGENCE ANALYSIS IN LENTIL (Lens culinaris Medik.) ZULQUARNINE, SYED ABU SIAM A field experiment was conducted with 60 lentil genotypes at Sher-eBangla Agricultural University experimental Farm, Sher-e-Bangla Nagar, Dhaka, to study their diversity based on different morphological characteristics during November 2005 to March 2006. Different multivariate analysis techniques were used to classify 60 lentil genotypes. Diversity was estimated by cluster distance. All the genotypes were grouped into six clusters. Principal Component Analysis, Cluster Analysis and Canonical Variate Analysis exhibited similar results. Significant variations were observed among the lentil genotypes for all the parameters under study. Cluster V had the maximum (22) and cluster I had the minimum (6) number of genotypes. The highest intra-cluster distance was observed in cluster IV followed by II. The highest inter-cluster distance was observed between cluster II and VI and the lowest inter-cluster distance was found between the clusters IV and I. Plant height and dry matter weight contributed maximum towards divergence among the lentil genotypes. Genetic divergence related to geographical diversity was not observed. The genotypes which had moderate inter-cluster distance coupled with medium to high yield could be utilized for screening suitable materials from large population. Considering diversity pattern, genetic status and other agronomic performances some of the materials viz. BD 5969 & BD 5983 from cluster I; BD 5988, BD 4085 & BD 4091 from cluster II; BD 5991 & BD 5980 from cluster III; BD 3861, BD 4103 & BD 4110 from cluster IV; BD 4074, BD 3853, BD 5961 & BD 5973 from cluster V and BD 5977, BD 5958, BD 5967, BD 5990, BD 5970, BD 5981 & BD 5966 from cluster VI, could be used as superior parents for lentil improvement programme. 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

2006-01-01T00:00:00Z ZAHAN, MOST. ISLIRAT http://localhost:8080/handle/123456789/547 2019-10-20T05:57:53Z 2006-12-01T00:00:00Z

MORPHOLOGICAL CHARACTERIZATION AND GENETIC DIVERGENCE IN OLEIFEROUS BRASSICA SPECIES ZAHAN, MOST. ISLIRAT A field experiment was conducted in the experimental field of Genetics and Plant Breeding Field Laboratory of Sher-e Bangla Agricultural University, Dhaka. Bangladesh to study on the morphological characteristics and genetic divergence in oleiferous Brassica species. They showed wide variation and thus were categorized under three cultivated species - B. rcipa. B. napus and B. juncea based on the morphological characteristics. The genotypes of three different species showed Qreater diversity. 41 genotypes were grouped in 6 different groups. Many of the groups comprise of the genotypes of the three different species. There is diversity among the genotypes of each species. Cluster 111 and V was the largest cluster comprising of 10 genotypes and cluster I and 11 with 3 genotypes each. Cluster H had the highest intra-cluster distance (0.813) Cluster I'V had the lowest intra cluster distance (0.378). Inter cluster distance was maximum (0.902) between clusters II and Vi. The results revealed that genotypes chosen for hybridization from clusters with highest distances would give high heterotic F1 and broad spectrum of variability in segregating generations. The phenotypic variance of each of characters was higher than respective genotvpic variance showing the minimum role of environment on these characters. High heritability with low genetic advance was observed for the characters days to 50% flowering. days to maturity, primary branches/plant, 1000-seed weight and vieldlplant. Yield/plant confirmed highly siiif1cant positive association with plant height (0.503). length of siliquae (0.277), siliquae/plant (0.658) and seedlsiliquae (0.303) but insignificant negative azsociation with days to 50% flowering (4058) days to maturity (-0.092).Path analysis showed that siliquaWplant had positive direct effect (0.628) on yield/plant. Path analysis revealed that days to 50% flowering had negative direct effect (41 R4) on vieldiplant. A thesis Submitted to the Department of Genetics and Plant Breeding Sher-e-Bangla Agricultural University, Dhaka In partial fulfilment of the requirements For the degree of MASTER OF SCIENCE (MS) IN GENETICS AND PLANT BREEDING SEMESTER: JULY-DECEMBER, 2006

2006-12-01T00:00:00Z RAHIM, MD. ABDUR http://localhost:8080/handle/123456789/545 2019-10-20T06:00:41Z 2006-12-01T00:00:00Z

CHARACTERIZATION AND GENETIC DIVERSITY ANALYSIS IN RICE (Ocvza saliva L.) RAHIM, MD. ABDUR .A held experiment was conducted with 36 rice genotypes at the experirneinal farm of Sher-e-I3angla Agricultural University. Dhaka to study the characterization and genetic diversity analysis in rice (O;y:a saliva I..) during November 2005 to May 2006. Signihicant variation was observed among all the genotypes for all the characters studied. Considering genetic parameters high genotypic coefficient of variatioli (GCV) was observed for spikelet sterility % followed by eflèctive tillers per plant, total tillers per plant and grain yield per plant, whereas days to 50% flowering showed very low GCV. High heritzthility with low genetic advance in percent of mean was observed for days to 50% flowering which indicated that non-additive gene effects were involved for the expression of this character and selection for such trait may not be rewarding. High heritability with moderate genetic advance in percent of mean \vas observed lix plant height indicated that this trait was tinder additive gene control and selection for genetic improvement for this trait would he eilèctive. Ditièrent multivariate analysis techniques were used to classift 36 rice genotypes. All the genotypes were grouped into live clusters. Principal component analysis, principal coordinate analysis, canonical variate analysis gave similar result. Cluster I had maximum (12) and both cluster Ill & IV had mini num (2) number of genolypes. The highest intra-cluster distance was found in cluster 1 and the lowest in cluster IV among five clusters. The highest inter-cluster distance was observed hetwcen cluster I and IV and the locst between cluster II and III. The characters- effective tillers per plant. 1000-grain weight and harvest index contributed maximum towards divergence among the rice genotypes. Considering genetic diversity and other agronomic performance the genotypes (110. 023 and (336 from cluster 1 (312. GIG and 033 li'oni cluster Il: 031 from cluster Ill and 021. 022 from cluster IV niktht be selected as gmn . 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

2006-12-01T00:00:00Z PARVEEN, SHAHANAZ http://localhost:8080/handle/123456789/543 2019-10-20T06:01:47Z 2006-12-01T00:00:00Z

VARIABILITY STUDY IN F2 PROGENIES OF THE INTER-VARIETAL CROSSES OF Brassica rapa PARVEEN, SHAHANAZ This research work was carried out by using the F 2 population of some inter-varietal crosses of the species Brassica rapa in the experimental farm. Sher-e-I3angla Agricultural University (SAt)). Dhaka during November 2005-March 2006 for estimating the magnitude of variations in characters, heritability, genetic advance, character associations, direct and indirect effect of different characters on seed yield. There were significant variations among the different genotypes used in the experiment. Genetic parameters, number of primary branches/plant. number of secondary branches/plant, length of siliqua. number of seeds/siliqua. days to 50% flowering. 1000 seed weight and yield/plant showed least difference between genotypic and phenorypic variance. Plant height, length of siliqua, number of seeds/siliqua and days to 50% flowering showed low genotypic and phenotypic coefficient of variation. Number of primary branches/plant and secondary branches/plant showed high heritability coupled with high genetic advance and very high genetic advance in percentage of mean. Ilowever. the yield/plant. days to maturity and length of siliqua showed low heritability. Correlation co-efficient analysis revealed that yield/plant had non significant positive association with plant height, number of secondary branches/plant, days to 50% flowering, length of siliqua. number of siliquae!plant and number of seeds/siliqua. Path coefficient analysis revealed that number of seedsisiliqua showed highest direct effect on yieldJplant followed by plant height, number of secondary branches/plant and number of siliquac/plant. Based on the variability study. some F 2 plants showing high heritability for yield contributing characters were selected from some of the cross combinations of the intenarietal crosses of Brassica rapa. A Thesis Submitted to the Faculty of Agriculture, Sher-e-Bangla Agricultural University, Dhaka, in partial flulfihiment of the requirements for the degree of MASTER OF SCIENCE IN GENETICS AND PLANT BREEDING SEMESTER: JULY-DECEMBER'06

2006-12-01T00:00:00Z