A study was undertaken to analyses the heritability, correlation and path co-efficient for growth and fruit characteristics in fifty seven okra(Abelmoschus esculentus Lam) genotypes grown at Plant Genetic Resources Centre, Regional Agricultural Research Station, BangladeshAgricultural Research Institute during kharif season of 2013. The highest range of variation was recorded in average fruit weight (18.25-25.41g), followed by yield per plant (98.90 – 1650.00g). The highest GCV (46.70 %) and PCV (47.72 %) were recorded for fruit yield perplant while both were lowest for days to maturity (8.07 % and 8.25 %). High heritability coupled with high or moderate degree of geneticadvance was estimated in plant height (99.82 % and 205.06), number of fruits per plant (99.53% and 203.63%), number of leaves per plant(99.57% and 204.49%), number of seeds per fruit (99.73% and 205.44%), leaf length (98.22% and 198.52%), leaf diameter (98.91% and203.76%), 100-seed weight (98.12% and 202.13%) and yield per plant (95.76 % and 197.26%). The highest positive correlation were observedbetween number of fruits per plant and yield per plant (r = 0.99**) and between number of fruits per plant and 100-seed weight (r = 0.44**).Also results showed that significantly positive correlation were between 100-seed weight and yield per plant (r = 0.44**), 100-seed weight andleaf length (r =0.42**), 100-seed weight and leaf diameter (0.38**), number of leaves per plant and 100-seed weight (r = 0.28*), 100-seedweight and plant height(r =0.40**), 100-seed weight and fruit length (r =0.28*). Significantly positive correlations were also observed for plantheight and number of fruits per plant, number of leaves per plant and yield per plant. The path coefficient analysis was done to determine directand indirect effects of traits on fruit yield. Direct significant positive and negative effect of number of fruits per plant (-0.091), 100-seed weight(0.174), number of seeds per plant (-0.213), average fruit yield (-0.310) towards yield.DOI: http://dx.doi.org/10.3126/ijasbt.v3i1.12142      Int J Appl Sci Biotechnol, Vol. 3(1): 127-133

The experiment was conducted to assess the water spinach production in aquaponic system using two different media for a period of 90 days. Only brick lets was used as media in treatment T1, whereas in treatment T2 media had mixture of brick lets and used tea leaves. Six 20 liter plastic containers and a 750 L water tank were used for vegetable bed and fish rearing respectively. Fish and water spinach were sampled fortnightly. The highest average plant height, weight and number of leaves recorded in T1 were 35.96 ± 4.75 cm, 59.09 + 23.85 g and 93.90 + 38.52, respectively. Total production of water spinach in T1 and T2 was 1.26 and 0.98 kg, respectively. At the end of the experiment, % length and weight gain was 33.81 and 174.06, the survival rate and FCR was found to be 98.33% and 1.56, respectively. The total production of fish was 29.44 tons/ha/90 days. The system produced higher amount of fish as well as vegetable with minimum water use having no environmental pollution. The system efficiently utilized fish waste in plant production through a symbiotic relationship between the fish and plants. Therefore, the system could be installed in high density city areas to produce fish and vegetable from the rooftop and backyard to address the environmental problems.

This study aimed to understand the livelihood status of the fishery-dependent communities in the South- Western coast of Bangladesh and their livelihood adaptation in response to climate change. The study was carried out in two villages of Dacope upazila in Khulna District. Data were collected from a purposively drawn sample of 60 fisher’s households through household interviews, key informants’ interviews, and transect walk as well as from secondary sources. The adverse climatic variability influences all the livelihood capitals and strategies of fishing communities. Most households have lower access to sanitation, market transportation, health facilities, GO, and NGO services during the adverse climatic situation. Increased levels of cyclones and floods result in greater damage to fishing equipment, livelihood assets, and lower level of fish catch. Income generation from fisheries-related activities is reducing gradually which affects the livelihoods of the fishers. The study has identified four different practices of adaptation to climate change by those fishing communities where about 71.67% adopted livelihood diversification. To cope with the changing climate and variability most of the fishing households (95%) have taken multiple adaptation strategies while the rest (5%) did not. The fishermen are exploited financially by the local credit facility provider. Diversification of livelihoods included agriculture (23.26%), fish trading (2.33%), fish farming (18.60%), and other different types of diversification found in the study area due to climate impacts but not always sufficiently fruitful. This situation may worsen over the next few decades and an improved level of responsiveness would be required. Vol. 9, No. 3, December 2022: 337-351