http://localhost:8080/handle/123456789/2760 Sat, 04 Apr 2026 13:20:47 GMT 2026-04-04T13:20:47Z http://localhost:8080/handle/123456789/2529 VARIETAL CHARACTERIZATION AND YIELD EVALUATION OF SIX RICE HYBRIDS (Oryza sativa L.) GROWN IN BANGLADESH SAMSUZZAMAN, MD. A field experiment was conducted with six hybrids cultivated in Bangladesh and two modern check varieties of rice (Oryza sativa L.) at Sher-e-Bangla Agricultural University experimental farm, to perform varietal characterization and to carry out of yield evaluation based on different morphological characters during the period of January 2006 to May 2006. The experiment was laid out in a randomized complete block design with three replications. In the experiment plant height for BRRI dhan 28 was highest (101.5 cm) and lowest for hybrid Richer (82.5 cm). For days to 50% flowering BRRI dhan 29 required maximum days (116.3 days) and BRRI dhan 28 required lowest days (95 days) but hybrid showed intermediate. For number of effective tillers, Hira showed maximum performance (17.7) and Sonarbangla 1 showed lowest performance (13.3). For days to maturity, Sonarbangla 1 required lowest days (118 days) and BRRI dhan 29, highest days (148 days). In panicle length status, Richer showed maximum performance (27.7 cm) and for BRRI dhan 28 (26 cm) was the lowest. Number of filled grains was the highest for BRRI dhan 29 (163.3) whereas, Jagoron only 118. Number of total grains was highest in BRRI dhan 29 (201.7) and for Jagoron it was only 133.7. On the other hand, for 1000-grain weight, Aloron was the best than others (28.8 g). In biological yield/plant (g), BRRI dhan showed highest yield (49.6 g) and Hira only 18 g. For harvest index, Jagoron was the best (64%) and for BRRI dhan 28 only 38%. For grain yield/plant Aloron expressed highest performance (47.87 g), whereas, BRRI dhan 28 it was only 30.45 g. Grain yield/plot, Aloron was the best than others. For grain yield/ha, Aloron was the best (7.4 t) than others. In yield advantage for plot basis Aloron was the best (54.45%) over BRRI dhan 28 and 24.75% over BRRI dhan 29, respectively. Maturity was also earlier for Aloron than other hybrids. Among the all hybrids, Aloron was the best in terms of grain yield/ha. High heritability was found for days to maturity (99.93%). The maximum variation was found in biological yield per plant (12-81 g). In correlation analysis a highly significant positive association were found for plant height, days to maturity, days to 50% flowering, panicle length and filled grains per panicle with grains/panicle, grain yield/ha. 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 GENETICS AND PLANT BREEDING SEMESTER: JANUARY – JUNE, 2007 Mon, 01 Jan 2007 00:00:00 GMT http://localhost:8080/handle/123456789/2529 2007-01-01T00:00:00Z http://localhost:8080/handle/123456789/642 HETEROSIS AND COMBINING ABILITY IN RAPESEED (Brassica rapa L.) HUQ, KAZI MOHAMMAD ENAMUL Field experiment on rapeseed (Brassica rapa L.) involving 7 x 7 half diallel cross excluding reciprocal were conducted at the Sher-e-Bangla Agricultural University, Dhaka during the winter season of 2006 - 2007. Heterosis and Combining ability were estimated for seed yield and other related characters such as plant height, days to 50% flowering, days to maturity, no. of primary branches per plant, no. of siliquae per plant, no. of seeds per siliqua, length of siliqua and hundred seed weight per plant. Out of twenty one crosses, Agroni x BARlsar-6, Agroni x Tori 7, Shafal x BARlsar-6 and BARlsar-6 x Tori 7 showed highly significant heterosis over mid parent and better parent for seed yield per plant. The hybrid Shafal x BARlsar-9 showed desirable heterosis for the early flowering. Agroni x Tori 7 was found to be the best one for number of primary branches per plant. The cross Agroni x Tori 7 produced maximum heterosis for number of siliquae per plant. The crosses Shafal x Tori 7 and Agroni x BARlsar-9 showed maximum length of siliqua and number of seeds per siliqua respectively. Desirable significant negative heterosis was found in the cross Tori 7 x BARlsar-9 over mid parent and over better parent for plant height. Hybrid Agroni x Tori 7 was found to have the best heterotic effect for number of primary branches per plant and maximum number of siliquae per plant where Tori 7 x BARlsar-9 for dwarfness. The variance due to GCA and SCA were highly significant for all the characters studied except hundred seed weight and seed yield per plant indicating the importance of both additive and non-additive gene effects. Highly significant GCA effect was found in case of hundred seed weight while highly significant SCA effect was found for seed yield per plant. The parent BARlsar-9 (P7) was an excellent general combiner for earliness and dwarfness where as Tori 7 for earliness, siliquae per plant and length of siliqua; BlNAsar-6 (P3) and Shafal (P2) for primary branches per plant: BlNAsar-6 for hundred seed weight and Agroni (P1) fpr more seeds per siliqua. The SCA estimates indicated that the crosses Tori 7 x BARlsar-9 (C21) was the best specific combiner for dwarfness where as Agroni x Tori 7 (C5) for primary branches per plant, siliquae per plant and seed yield per plant; Shafal x BARlsar-6 (C7) for early flowering, early maturity and seed yield per plant; Shafal x Tori 7 (C10) for length of siliqua; BARlsar-6 x BlNAsar-6 (C12) for seeds per siliqua and SS 75 x Tori 7 (C19) for earliness. The GCA and SCA ratio for all the characters except seed yield per plant were more than one indicating that these characters were predominantly under additive genetic control. 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 GENETICS AND PLANT BREEDING SEMESTER: JULY - DECEMBER, 2007 Sat, 01 Dec 2007 00:00:00 GMT http://localhost:8080/handle/123456789/642 2007-12-01T00:00:00Z http://localhost:8080/handle/123456789/640 GENETIC DIVERGENCE OF CHILLI (Capsicum frutescens L.) SULTANA, NIST. NASRIN A Thesis Submitted to the faculty of Agriculture Department of Genetics and Plant Breeding Sher-e-Bangla Agricultural University, Dhaka in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN GENETICS AND PLANT BREEDING SEMESTER: JULY-DECEMBER 2007 Sat, 01 Dec 2007 00:00:00 GMT http://localhost:8080/handle/123456789/640 2007-12-01T00:00:00Z http://localhost:8080/handle/123456789/639 CHARACTERIZATION AND DIVERSITY ANALYSIS OF THE OLEIFEROUS Brassica species RASHID, MD. HARUN-UR An experiment was carried out with 40 oleiferous Brassica species to evaluate the performance for seed yield and yield components, characterization, variability, correlation, path co-efficient analysis and genetic divergence. The genotypes showed wide variation for morphological characteristics and thus were categorized under three cultivated species- B. rapa, B. napus and B. juncea. Significant variation was observed among the genotypes tested. Considering genetic parameters. high CCV value was observed for plant height, number of siliquae/plant, days to 50% Ilowering and days to maturity. High heritability values along with high genetic advance in percentage of mean were obtained for si(iqua length, number of seeds/siliqua, number of primary branches/plant and number of secondary branches/plant. Correlation studies revealed highly significant positive association of yield/plant with number of primary branches/plant, number of secondary branches/plant, number of seeds/siliqua and number of siliquac/plant. Path analysis showed that yield/plant had the highest direct effect on days to maturity, number of seeds/siliqua, number of siliqune/plant and number of primary branches/plant and number of secondary branches/plant. I)iversity was estimated by cluster distance and genotypes were grouped into six clusters. Principal component analysis, cluster analysis and canonical variate analysis exhibited similar results. Cluster II had the maximum 10 and cluster I and III had the minimum 5 number of genotypes. The highest intra-cluster distance was observed in cluster V. The highest intercluster distance was observed between cluster I and VI and the lowest was between the cluster Ill and V. The characters for number of secondary branches/plant, number of siliquae/plant and yield/plant contributed maximum divergence. Considering diversity pattern, genetic status and other agronomic performances 14 materials viz. BD-6948 and SAUYC from cluster I: BD-9063, BD-9064 and BD-9071 from cluster II; LID-9068 and BD-9077 from cluster Ill; BD-9078, BL)- 9106 and RD-6949 from cluster IV; BD-9079 and BD-9081 from cluster V and 13D-9100 and BD-7812 from cluster VI, could be used as superior parents for mustard and rape 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 IN GENETICS AND PLANT BREEDING SEMESTER: JULY-DECEMBER'07 Sat, 01 Dec 2007 00:00:00 GMT http://localhost:8080/handle/123456789/639 2007-12-01T00:00:00Z