Fruit rot disease of Amla (Phyllanthus emblica L.) reduces the quality of the fruits and causes economic loss. An investigation was conducted to find out pre-harvest fruit rot fungal pathogen associated with Amla fruits. The fungal pathogen was isolated using tissue planting method. Both morphological and molecular characterization confirmed the pathogen identity as Pestalotiopsis sp. Result indicated that Pestalotiopsis sp. showed the highest radial mycelial growth on potato dextrose agar (PDA) medium. The utmost vegetative growth of the identified fungus was recorded at 25℃ on PDA medium, however, a range of temperature may be suitable for the fungal growth. Sodium benzoate and vinegar were tested against the fungus for food preservative. Sodium benzoate at 100mM concentration exhibited efficiency to inhibit the radial growth of the fungus. Chemical food preservatives-sodium benzoate could be used to control the growth of Pestalotiopsis sp., associated with Amla fruit rot disease. To the best of our search, quite a few attempts have been taken to investigate the fruit rot disease of Amla. Therefore, fruit rot disease caused by Pestalotiopsis sp., is the first record in Bangladesh. Jahangirnagar University J. Biol. Sci. 10(1 & 2): 71-81, 2021 (June & December)
Background and Objective: Strawberry leaf spot diseases caused by fungi are the most common and economically significant concern, reducing strawberry productivity and quality. Current investigation attempts to find out the causal agent of certain leaf spot disease of strawberry, growth behaviour of the pathogen and its in vitro control strategies. Materials and Methods: A fungal pathogen causing leaf spot of the strawberry plant was isolated from a distinguish symptom and identified as Neopestalotiopsis chrysea (Maharachch. and K.D. Hyde) Maharachch., K.D. Hyde and Crous. Through classical taxonomy and molecular characterization based on sequencing the internal transcribed spacer region of rDNA of the fungus. The growth behaviour of the fungus was evaluated on six different solid fungal culture media, different light, temperatures and pH conditions. Dual culture and food poison techniques were applied to evaluate the efficacy of Trichoderma spp. and chemical fungicides against the fungus, respectively. Results: The optimum mycelial growth of the fungus was recorded on potato dextrose agar and potato sucrose agar media, at 20EC temperature, pH 7 and under complete dark conditions. Trichoderma reesei exhibited significant mycelial growth inhibition of the fungus. The maximum mycelial inhibition of the fungus was found in amistar top (100 ppm), followed by tilt 250 EC (500 ppm). Conclusion: To the best of our search, the leaf spot disease of strawberry caused by Neopestalotiopsis chrysea is a new record in Bangladesh.
Reactive dyes contain different types of reactive groups which have different levels of sensitivity. Reactive dyeing is carried out by exhaust method on cotton knit fabric. A trichromatic combination is chosen containing vinylsulphone and bis-monochlorotriazine reactive groups. Dyeing of fabric is carried out with standard condition and variation of the conditions (electrolyte concentration, pH, exhaustion time, fixation time and M:L). Colorimetric data (DE*) is produced by comparing the difference between standard shade and the resulting shades by using spectrophotometer. Between the investigated reactive groups of reactive dye bismonochlorotriazine shows lower sensitivity in other terms higher robustness than vinyl sulphone.
The current experiment was carried out to evaluate the occurrence of mites on chilli (Capsicum spp.) leaves. The trial was conducted in the experimental field and laboratory of RSRC, BARI, from December 2020 to April 2021. Three released varieties (viz. BARI Morich 1, BARI Morich 2, and BARI Morich 3) and six genotypes (Viz. G10, G13, G25, G27, G30, and G31) were used as the test crops of the experiment. The findings showed a considerable amount of variation among the treatments. Regarding the number of mites/leaf, the G25 had the highest mean number (7.24) whereas the G31 had the lowest (0.69). The G30 was the most productive in terms of yield (512.27 g/plant). The weight of each fruit and the number of fruits per plant were directly related to yield. On the contrary, the G10 and the G13 supplied an optimum yield per plant, whereas the G25 produced the least yield (21.02/plant). The correlation between yield and mite infestation was negative, and the results revealed that the BARI Morich-1, the G27, and the G31 were highly resistant to chilli mite infestation, and the G13, the BARI Morich-3, and the G30 were resistant, while the BARI Morich-2 was only moderately resistant. The G10 was tolerant and the G25 was susceptible to chilli mite infestation. The results concluded that the tested genotypes G13, G27, G30 and G31 showed remarkable resistance to mite infestation. J. Asiat. Soc. Bangladesh, Sci. 48(1-2): 123-136, June-December 2022
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.